1193 lines
43 KiB
C++
1193 lines
43 KiB
C++
/*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
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*
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* RawTherapee is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* RawTherapee is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with RawTherapee. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <array>
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#ifdef _OPENMP
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#include <omp.h>
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#endif
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#include "imagefloat.h"
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#include "improcfun.h"
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#include "procparams.h"
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#include "rt_math.h"
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#include "rtengine.h"
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#include "rtlensfun.h"
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#include "sleef.c"
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using namespace std;
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namespace
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{
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float pow3 (float x)
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{
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return x * x * x;
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}
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float pow4 (float x)
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{
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return (x * x) * (x * x);
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}
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float pown (float x, int n)
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{
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switch (n) {
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case 0:
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return 1;
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case 2:
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return x * x;
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case 4:
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return pow4 (x);
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case 6:
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return (x * x) * pow4 (x);
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case 8:
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return pow4 (x) * pow4 (x);
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default:
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return pow_F (x, n);
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}
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}
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float normn (float a, float b, int n)
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{
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switch (n) {
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case 2:
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return sqrtf (a * a + b * b);
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case 4:
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return sqrtf (sqrtf (pow4 (a) + pow4 (b)));
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case 6:
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return sqrtf (xcbrtf (pow3 (a) * pow3 (a) + pow3 (b) * pow3 (b)));
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case 8:
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return sqrtf (sqrtf (sqrtf (pow4 (a) * pow4 (a) + pow4 (b) * pow4 (b))));
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default:
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return pow_F (pown (a, n) + pown (b, n), 1.f / n);
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}
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}
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#ifdef __SSE2__
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inline void interpolateTransformCubic(rtengine::Imagefloat* src, int xs, int ys, float Dx, float Dy, float &r, float &g, float &b, float mul)
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{
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constexpr float A = -0.85f;
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// Vertical
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const float t1Vert = A * (Dy - Dy * Dy);
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const float t2Vert = (3.f - 2.f * Dy) * Dy * Dy;
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const vfloat w3Vert = F2V(t1Vert * Dy);
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const vfloat w2Vert = F2V(t1Vert * Dy - t1Vert + t2Vert);
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const vfloat w1Vert = F2V(1.f - (t1Vert * Dy) - t2Vert);
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const vfloat w0Vert = F2V(t1Vert - (t1Vert * Dy));
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const vfloat rv = (w0Vert * LVFU(src->r(ys, xs)) + w1Vert * LVFU(src->r(ys + 1, xs))) + (w2Vert * LVFU(src->r(ys + 2, xs)) + w3Vert * LVFU(src->r(ys + 3, xs)));
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const vfloat gv = (w0Vert * LVFU(src->g(ys, xs)) + w1Vert * LVFU(src->g(ys + 1, xs))) + (w2Vert * LVFU(src->g(ys + 2, xs)) + w3Vert * LVFU(src->g(ys + 3, xs)));
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const vfloat bv = (w0Vert * LVFU(src->b(ys, xs)) + w1Vert * LVFU(src->b(ys + 1, xs))) + (w2Vert * LVFU(src->b(ys + 2, xs)) + w3Vert * LVFU(src->b(ys + 3, xs)));
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// Horizontal
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const float t1Hor = A * (Dx - Dx * Dx);
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const float t2Hor = (3.f - 2.f * Dx) * Dx * Dx;
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const vfloat weight = _mm_set_ps(t1Hor * Dx, t1Hor * Dx - t1Hor + t2Hor, 1.f - (t1Hor * Dx) - t2Hor, t1Hor - (t1Hor * Dx)) * F2V(mul);
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r = vhadd(weight * rv);
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g = vhadd(weight * gv);
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b = vhadd(weight * bv);
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}
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#else
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inline void interpolateTransformCubic(rtengine::Imagefloat* src, int xs, int ys, float Dx, float Dy, float &r, float &g, float &b, float mul)
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{
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constexpr float A = -0.85f;
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// Vertical
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const float t1Vert = A * (Dy - Dy * Dy);
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const float t2Vert = (3.f - 2.f * Dy) * Dy * Dy;
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const float w3Vert = t1Vert * Dy;
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const float w2Vert = t1Vert * Dy - t1Vert + t2Vert;
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const float w1Vert = 1.f - (t1Vert * Dy) - t2Vert;
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const float w0Vert = t1Vert - (t1Vert * Dy);
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float rv[4], gv[4], bv[4];
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for (int i = 0; i < 4; ++i) {
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rv[i] = w0Vert * src->r(ys, xs + i) + w1Vert * src->r(ys + 1, xs + i) + w2Vert * src->r(ys + 2, xs + i) + w3Vert * src->r(ys + 3, xs + i);
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gv[i] = w0Vert * src->g(ys, xs + i) + w1Vert * src->g(ys + 1, xs + i) + w2Vert * src->g(ys + 2, xs + i) + w3Vert * src->g(ys + 3, xs + i);
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bv[i] = w0Vert * src->b(ys, xs + i) + w1Vert * src->b(ys + 1, xs + i) + w2Vert * src->b(ys + 2, xs + i) + w3Vert * src->b(ys + 3, xs + i);
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}
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// Horizontal
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const float t1Hor = A * (Dx - Dx * Dx);
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const float t2Hor = (3.f - 2.f * Dx) * Dx * Dx;
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const float w3Hor = t1Hor * Dx;
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const float w2Hor = t1Hor * Dx - t1Hor + t2Hor;
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const float w1Hor = 1.f - (t1Hor * Dx) - t2Hor;
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const float w0Hor = t1Hor - (t1Hor * Dx);
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r = mul * (rv[0] * w0Hor + rv[1] * w1Hor + rv[2] * w2Hor + rv[3] * w3Hor);
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g = mul * (gv[0] * w0Hor + gv[1] * w1Hor + gv[2] * w2Hor + gv[3] * w3Hor);
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b = mul * (bv[0] * w0Hor + bv[1] * w1Hor + bv[2] * w2Hor + bv[3] * w3Hor);
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}
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#endif
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#ifdef __SSE2__
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inline void interpolateTransformChannelsCubic(const float* const* src, int xs, int ys, float Dx, float Dy, float& dest, float mul)
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{
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constexpr float A = -0.85f;
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// Vertical
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const float t1Vert = A * (Dy - Dy * Dy);
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const float t2Vert = (3.f - 2.f * Dy) * Dy * Dy;
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const vfloat w3Vert = F2V(t1Vert * Dy);
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const vfloat w2Vert = F2V(t1Vert * Dy - t1Vert + t2Vert);
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const vfloat w1Vert = F2V(1.f - (t1Vert * Dy) - t2Vert);
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const vfloat w0Vert = F2V(t1Vert - (t1Vert * Dy));
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const vfloat cv = (w0Vert * LVFU(src[ys][xs]) + w1Vert * LVFU(src[ys + 1][xs])) + (w2Vert * LVFU(src[ys + 2][xs]) + w3Vert * LVFU(src[ys + 3][xs]));
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// Horizontal
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const float t1Hor = A * (Dx - Dx * Dx);
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const float t2Hor = (3.f - 2.f * Dx) * Dx * Dx;
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const vfloat weight = _mm_set_ps(t1Hor * Dx, t1Hor * Dx - t1Hor + t2Hor, 1.f - (t1Hor * Dx) - t2Hor, t1Hor - (t1Hor * Dx));
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dest = mul * vhadd(weight * cv);
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}
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#else
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inline void interpolateTransformChannelsCubic(const float* const* src, int xs, int ys, float Dx, float Dy, float& dest, float mul)
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{
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constexpr float A = -0.85f;
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// Vertical
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const float t1Vert = A * (Dy - Dy * Dy);
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const float t2Vert = (3.f - 2.f * Dy) * Dy * Dy;
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const float w3Vert = t1Vert * Dy;
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const float w2Vert = t1Vert * Dy - t1Vert + t2Vert;
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const float w1Vert = 1.f - (t1Vert * Dy) - t2Vert;
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const float w0Vert = t1Vert - (t1Vert * Dy);
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float cv[4];
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for (int i = 0; i < 4; ++i) {
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cv[i] = w0Vert * src[ys][xs + i] + w1Vert * src[ys + 1][xs + i] + w2Vert * src[ys + 2][xs + i] + w3Vert * src[ys + 3][xs + i];
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}
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// Horizontal
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const float t1Hor = A * (Dx - Dx * Dx);
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const float t2Hor = (3.f - 2.f * Dx) * Dx * Dx;
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const float w3Hor = t1Hor * Dx;
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const float w2Hor = t1Hor * Dx - t1Hor + t2Hor;
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const float w1Hor = 1.f - (t1Hor * Dx) - t2Hor;
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const float w0Hor = t1Hor - (t1Hor * Dx);
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dest = mul * (cv[0] * w0Hor + cv[1] * w1Hor + cv[2] * w2Hor + cv[3] * w3Hor);
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}
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#endif
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}
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namespace rtengine
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{
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#undef CLIPTOC
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#define CLIPTOC(a,b,c,d) ((a)>=(b)?((a)<=(c)?(a):(d=true,(c))):(d=true,(b)))
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bool ImProcFunctions::transCoord (int W, int H, const std::vector<Coord2D> &src, std::vector<Coord2D> &red, std::vector<Coord2D> &green, std::vector<Coord2D> &blue, double ascaleDef,
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const LensCorrection *pLCPMap) const
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{
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bool clipped = false;
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red.clear ();
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green.clear ();
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blue.clear ();
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if (!needsCA() && !needsDistortion() && !needsRotation() && !needsPerspective() && (!params->lensProf.useDist || pLCPMap == nullptr)) {
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for (size_t i = 0; i < src.size(); i++) {
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red.push_back (Coord2D (src[i].x, src[i].y));
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green.push_back (Coord2D (src[i].x, src[i].y));
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blue.push_back (Coord2D (src[i].x, src[i].y));
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}
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return clipped;
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}
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double oW = W, oH = H;
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double w2 = (double) oW / 2.0 - 0.5;
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double h2 = (double) oH / 2.0 - 0.5;
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double maxRadius = sqrt ( (double) ( oW * oW + oH * oH ) ) / 2;
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// auxiliary variables for distortion correction
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bool needsDist = needsDistortion(); // for performance
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double distAmount = params->distortion.amount;
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// auxiliary variables for rotation
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double cost = cos (params->rotate.degree * rtengine::RT_PI / 180.0);
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double sint = sin (params->rotate.degree * rtengine::RT_PI / 180.0);
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// auxiliary variables for vertical perspective correction
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double vpdeg = params->perspective.vertical / 100.0 * 45.0;
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double vpalpha = (90.0 - vpdeg) / 180.0 * rtengine::RT_PI;
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double vpteta = fabs (vpalpha - rtengine::RT_PI / 2) < 3e-4 ? 0.0 : acos ((vpdeg > 0 ? 1.0 : -1.0) * sqrt ((-oW * oW * tan (vpalpha) * tan (vpalpha) + (vpdeg > 0 ? 1.0 : -1.0) * oW * tan (vpalpha) * sqrt (16 * maxRadius * maxRadius + oW * oW * tan (vpalpha) * tan (vpalpha))) / (maxRadius * maxRadius * 8)));
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double vpcospt = (vpdeg >= 0 ? 1.0 : -1.0) * cos (vpteta), vptanpt = tan (vpteta);
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// auxiliary variables for horizontal perspective correction
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double hpdeg = params->perspective.horizontal / 100.0 * 45.0;
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double hpalpha = (90.0 - hpdeg) / 180.0 * rtengine::RT_PI;
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double hpteta = fabs (hpalpha - rtengine::RT_PI / 2) < 3e-4 ? 0.0 : acos ((hpdeg > 0 ? 1.0 : -1.0) * sqrt ((-oH * oH * tan (hpalpha) * tan (hpalpha) + (hpdeg > 0 ? 1.0 : -1.0) * oH * tan (hpalpha) * sqrt (16 * maxRadius * maxRadius + oH * oH * tan (hpalpha) * tan (hpalpha))) / (maxRadius * maxRadius * 8)));
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double hpcospt = (hpdeg >= 0 ? 1.0 : -1.0) * cos (hpteta), hptanpt = tan (hpteta);
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double ascale = ascaleDef > 0 ? ascaleDef : (params->commonTrans.autofill ? getTransformAutoFill (oW, oH, pLCPMap) : 1.0);
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for (size_t i = 0; i < src.size(); i++) {
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double x_d = src[i].x, y_d = src[i].y;
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if (pLCPMap && params->lensProf.useDist) {
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pLCPMap->correctDistortion(x_d, y_d, 0, 0, ascale);
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} else {
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x_d *= ascale;
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y_d *= ascale;
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}
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x_d += ascale * (0 - w2); // centering x coord & scale
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y_d += ascale * (0 - h2); // centering y coord & scale
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if (needsPerspective()) {
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// horizontal perspective transformation
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y_d *= maxRadius / (maxRadius + x_d * hptanpt);
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x_d *= maxRadius * hpcospt / (maxRadius + x_d * hptanpt);
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// vertical perspective transformation
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x_d *= maxRadius / (maxRadius - y_d * vptanpt);
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y_d *= maxRadius * vpcospt / (maxRadius - y_d * vptanpt);
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}
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// rotate
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double Dx = x_d * cost - y_d * sint;
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double Dy = x_d * sint + y_d * cost;
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// distortion correction
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double s = 1;
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if (needsDist) {
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double r = sqrt (Dx * Dx + Dy * Dy) / maxRadius; // sqrt is slow
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s = 1.0 - distAmount + distAmount * r ;
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}
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// LCP CA is not reflected in preview (and very small), so don't add it here
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red.push_back (Coord2D (Dx * (s + params->cacorrection.red) + w2, Dy * (s + params->cacorrection.red) + h2));
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green.push_back (Coord2D (Dx * s + w2, Dy * s + h2));
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blue.push_back (Coord2D (Dx * (s + params->cacorrection.blue) + w2, Dy * (s + params->cacorrection.blue) + h2));
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}
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// Clip all points and track if they were any corrections
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for (size_t i = 0; i < src.size(); i++) {
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red[i].x = CLIPTOC (red[i].x, 0, W - 1, clipped);
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red[i].y = CLIPTOC (red[i].y, 0, H - 1, clipped);
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green[i].x = CLIPTOC (green[i].x, 0, W - 1, clipped);
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green[i].y = CLIPTOC (green[i].y, 0, H - 1, clipped);
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blue[i].x = CLIPTOC (blue[i].x, 0, W - 1, clipped);
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blue[i].y = CLIPTOC (blue[i].y, 0, H - 1, clipped);
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}
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return clipped;
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}
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// Transform all corners and critical sidelines of an image
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bool ImProcFunctions::transCoord (int W, int H, int x, int y, int w, int h, int& xv, int& yv, int& wv, int& hv, double ascaleDef, const LensCorrection *pLCPMap) const
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{
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const int DivisionsPerBorder = 32;
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int x1 = x, y1 = y;
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int x2 = x1 + w - 1;
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int y2 = y1 + h - 1;
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// Build all edge points and half-way points
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std::vector<Coord2D> corners (8);
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corners[0].set (x1, y1);
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corners[1].set (x1, y2);
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corners[2].set (x2, y2);
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corners[3].set (x2, y1);
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corners[4].set ((x1 + x2) / 2, y1);
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corners[5].set ((x1 + x2) / 2, y2);
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corners[6].set (x1, (y1 + y2) / 2);
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corners[7].set (x2, (y1 + y2) / 2);
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// Add several steps inbetween
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int xstep = (x2 - x1) / DivisionsPerBorder;
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if (xstep < 1) {
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xstep = 1;
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}
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for (int i = x1 + xstep; i <= x2 - xstep; i += xstep) {
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corners.push_back (Coord2D (i, y1));
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corners.push_back (Coord2D (i, y2));
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}
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int ystep = (y2 - y1) / DivisionsPerBorder;
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if (ystep < 1) {
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ystep = 1;
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}
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for (int i = y1 + ystep; i <= y2 - ystep; i += ystep) {
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corners.push_back (Coord2D (x1, i));
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corners.push_back (Coord2D (x2, i));
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}
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std::vector<Coord2D> r, g, b;
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bool clipped = transCoord (W, H, corners, r, g, b, ascaleDef, pLCPMap);
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// Merge all R G Bs into one X/Y pool
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std::vector<Coord2D> transCorners;
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transCorners.insert (transCorners.end(), r.begin(), r.end());
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transCorners.insert (transCorners.end(), g.begin(), g.end());
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transCorners.insert (transCorners.end(), b.begin(), b.end());
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// find the min/max of all coordinates, so the borders
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double x1d = transCorners[0].x;
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for (size_t i = 1; i < transCorners.size(); i++)
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if (transCorners[i].x < x1d) {
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x1d = transCorners[i].x;
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}
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int x1v = (int) (x1d);
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double y1d = transCorners[0].y;
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for (size_t i = 1; i < transCorners.size(); i++)
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if (transCorners[i].y < y1d) {
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y1d = transCorners[i].y;
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}
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int y1v = (int) (y1d);
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double x2d = transCorners[0].x;
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for (size_t i = 1; i < transCorners.size(); i++)
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if (transCorners[i].x > x2d) {
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x2d = transCorners[i].x;
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}
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int x2v = (int)ceil (x2d);
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double y2d = transCorners[0].y;
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for (size_t i = 1; i < transCorners.size(); i++)
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if (transCorners[i].y > y2d) {
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y2d = transCorners[i].y;
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}
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int y2v = (int)ceil (y2d);
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xv = x1v;
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yv = y1v;
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wv = x2v - x1v + 1;
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hv = y2v - y1v + 1;
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return clipped;
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}
|
|
|
|
void ImProcFunctions::transform (Imagefloat* original, Imagefloat* transformed, int cx, int cy, int sx, int sy, int oW, int oH, int fW, int fH,
|
|
const FramesMetaData *metadata,
|
|
int rawRotationDeg, bool fullImage)
|
|
{
|
|
double focalLen = metadata->getFocalLen();
|
|
double focalLen35mm = metadata->getFocalLen35mm();
|
|
float focusDist = metadata->getFocusDist();
|
|
double fNumber = metadata->getFNumber();
|
|
|
|
std::unique_ptr<const LensCorrection> pLCPMap;
|
|
|
|
if (needsLensfun()) {
|
|
pLCPMap = LFDatabase::findModifier(params->lensProf, metadata, oW, oH, params->coarse, rawRotationDeg);
|
|
} else if (needsLCP()) { // don't check focal length to allow distortion correction for lenses without chip
|
|
const std::shared_ptr<LCPProfile> pLCPProf = LCPStore::getInstance()->getProfile (params->lensProf.lcpFile);
|
|
|
|
if (pLCPProf) {
|
|
pLCPMap.reset(
|
|
new LCPMapper (pLCPProf, focalLen, focalLen35mm,
|
|
focusDist, fNumber, false,
|
|
false,
|
|
oW, oH, params->coarse, rawRotationDeg
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
if (! (needsCA() || needsDistortion() || needsRotation() || needsPerspective() || needsLCP() || needsLensfun()) && (needsVignetting() || needsPCVignetting() || needsGradient())) {
|
|
transformLuminanceOnly (original, transformed, cx, cy, oW, oH, fW, fH);
|
|
} else {
|
|
bool highQuality;
|
|
std::unique_ptr<Imagefloat> tmpimg;
|
|
Imagefloat *dest = transformed;
|
|
if (!needsCA() && scale != 1) {
|
|
highQuality = false;
|
|
} else {
|
|
highQuality = true;
|
|
// agriggio: CA correction via the lens profile has to be
|
|
// performed before separately from the the other transformations
|
|
// (except for the coarse rotation/flipping). In order to not
|
|
// change the code too much, I simply introduced a new mode
|
|
// TRANSFORM_HIGH_QUALITY_CA, which applies *only* profile-based
|
|
// CA correction. So, the correction in this case occurs in two
|
|
// steps, using an intermediate temporary image. There's room for
|
|
// optimization of course...
|
|
if (pLCPMap && params->lensProf.useCA && pLCPMap->isCACorrectionAvailable()) {
|
|
tmpimg.reset(new Imagefloat(original->getWidth(), original->getHeight()));
|
|
dest = tmpimg.get();
|
|
}
|
|
}
|
|
transformGeneral(highQuality, original, dest, cx, cy, sx, sy, oW, oH, fW, fH, pLCPMap.get());
|
|
|
|
if (highQuality && dest != transformed) {
|
|
transformLCPCAOnly(dest, transformed, cx, cy, pLCPMap.get());
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// helper function
|
|
void ImProcFunctions::calcVignettingParams (int oW, int oH, const VignettingParams& vignetting, double &w2, double &h2, double& maxRadius, double &v, double &b, double &mul)
|
|
{
|
|
// vignette center is a point with coordinates between -1 and +1
|
|
double x = vignetting.centerX / 100.0;
|
|
double y = vignetting.centerY / 100.0;
|
|
|
|
// calculate vignette center in pixels
|
|
w2 = (double) oW / 2.0 - 0.5 + x * oW;
|
|
h2 = (double) oH / 2.0 - 0.5 + y * oH;
|
|
|
|
// max vignette radius in pixels
|
|
maxRadius = sqrt ( (double) ( oW * oW + oH * oH ) ) / 2.;
|
|
|
|
// vignette variables with applied strength
|
|
v = 1.0 + vignetting.strength * fabs (vignetting.amount) * 3.0 / 400.0;
|
|
b = 1.0 + vignetting.radius * 7.0 / 100.0;
|
|
mul = (1.0 - v) / tanh (b);
|
|
}
|
|
|
|
struct grad_params {
|
|
bool angle_is_zero, transpose, bright_top;
|
|
float ta, yc, xc;
|
|
float ys, ys_inv;
|
|
float scale, botmul, topmul;
|
|
float top_edge_0;
|
|
int h;
|
|
};
|
|
static void calcGradientParams (int oW, int oH, const GradientParams& gradient, struct grad_params& gp)
|
|
{
|
|
int w = oW;
|
|
int h = oH;
|
|
double gradient_stops = gradient.strength;
|
|
double gradient_span = gradient.feather / 100.0;
|
|
double gradient_center_x = gradient.centerX / 200.0 + 0.5;
|
|
double gradient_center_y = gradient.centerY / 200.0 + 0.5;
|
|
double gradient_angle = gradient.degree / 180.0 * rtengine::RT_PI;
|
|
//fprintf(stderr, "%f %f %f %f %f %d %d\n", gradient_stops, gradient_span, gradient_center_x, gradient_center_y, gradient_angle, w, h);
|
|
|
|
// make 0.0 <= gradient_angle < 2 * rtengine::RT_PI
|
|
gradient_angle = fmod (gradient_angle, 2 * rtengine::RT_PI);
|
|
|
|
if (gradient_angle < 0.0) {
|
|
gradient_angle += 2.0 * rtengine::RT_PI;
|
|
}
|
|
|
|
gp.bright_top = false;
|
|
gp.transpose = false;
|
|
gp.angle_is_zero = false;
|
|
gp.h = h;
|
|
double cosgrad = cos (gradient_angle);
|
|
|
|
if (fabs (cosgrad) < 0.707) {
|
|
// we transpose to avoid division by zero at 90 degrees
|
|
// (actually we could transpose only for 90 degrees, but this way we avoid
|
|
// division with extremely small numbers
|
|
gp.transpose = true;
|
|
gradient_angle += 0.5 * rtengine::RT_PI;
|
|
double gxc = gradient_center_x;
|
|
gradient_center_x = 1.0 - gradient_center_y;
|
|
gradient_center_y = gxc;
|
|
}
|
|
|
|
gradient_angle = fmod (gradient_angle, 2 * rtengine::RT_PI);
|
|
|
|
if (gradient_angle > 0.5 * rtengine::RT_PI && gradient_angle < rtengine::RT_PI) {
|
|
gradient_angle += rtengine::RT_PI;
|
|
gp.bright_top = true;
|
|
} else if (gradient_angle >= rtengine::RT_PI && gradient_angle < 1.5 * rtengine::RT_PI) {
|
|
gradient_angle -= rtengine::RT_PI;
|
|
gp.bright_top = true;
|
|
}
|
|
|
|
if (fabs (gradient_angle) < 0.001 || fabs (gradient_angle - 2 * rtengine::RT_PI) < 0.001) {
|
|
gradient_angle = 0;
|
|
gp.angle_is_zero = true;
|
|
}
|
|
|
|
if (gp.transpose) {
|
|
gp.bright_top = !gp.bright_top;
|
|
std::swap(w, h);
|
|
}
|
|
|
|
gp.scale = 1.0 / pow (2, gradient_stops);
|
|
|
|
if (gp.bright_top) {
|
|
gp.topmul = 1.0;
|
|
gp.botmul = gp.scale;
|
|
} else {
|
|
gp.topmul = gp.scale;
|
|
gp.botmul = 1.0;
|
|
}
|
|
|
|
gp.ta = tan (gradient_angle);
|
|
gp.xc = w * gradient_center_x;
|
|
gp.yc = h * gradient_center_y;
|
|
gp.ys = sqrt ((float)h * h + (float)w * w) * (gradient_span / cos (gradient_angle));
|
|
gp.ys_inv = 1.0 / gp.ys;
|
|
gp.top_edge_0 = gp.yc - gp.ys / 2.0;
|
|
|
|
if (gp.ys < 1.0 / h) {
|
|
gp.ys_inv = 0;
|
|
gp.ys = 0;
|
|
}
|
|
}
|
|
|
|
static float calcGradientFactor (const struct grad_params& gp, int x, int y)
|
|
{
|
|
if (gp.angle_is_zero) {
|
|
int gy = gp.transpose ? x : y;
|
|
|
|
if (gy < gp.top_edge_0) {
|
|
return gp.topmul;
|
|
} else if (gy >= gp.top_edge_0 + gp.ys) {
|
|
return gp.botmul;
|
|
} else {
|
|
float val = ((float) (gy - gp.top_edge_0) * gp.ys_inv);
|
|
|
|
if (gp.bright_top) {
|
|
val = 1.f - val;
|
|
}
|
|
|
|
val *= rtengine::RT_PI_F_2;
|
|
|
|
if (gp.scale < 1.f) {
|
|
val = pow3 (xsinf (val));
|
|
} else {
|
|
val = 1.f - pow3 (xcosf (val));
|
|
}
|
|
|
|
return gp.scale + val * (1.0 - gp.scale);
|
|
}
|
|
} else {
|
|
int gy = gp.transpose ? x : y;
|
|
int gx = gp.transpose ? gp.h - y - 1 : x;
|
|
float top_edge = gp.top_edge_0 - gp.ta * (gx - gp.xc);
|
|
|
|
if (gy < top_edge) {
|
|
return gp.topmul;
|
|
} else if (gy >= top_edge + gp.ys) {
|
|
return gp.botmul;
|
|
} else {
|
|
float val = ((float) (gy - top_edge) * gp.ys_inv);
|
|
|
|
val = gp.bright_top ? 1.f - val : val;
|
|
|
|
val *= rtengine::RT_PI_F_2;
|
|
|
|
if (gp.scale < 1.f) {
|
|
val = pow3 (xsinf (val));
|
|
} else {
|
|
val = 1.f - pow3 (xcosf (val));
|
|
}
|
|
|
|
return gp.scale + val * (1.0 - gp.scale);
|
|
}
|
|
}
|
|
}
|
|
|
|
struct pcv_params {
|
|
float oe_a, oe_b, oe1_a, oe1_b, oe2_a, oe2_b;
|
|
float ie_mul, ie1_mul, ie2_mul;
|
|
float sepmix, feather;
|
|
int w, h, x1, x2, y1, y2;
|
|
int sep;
|
|
bool is_super_ellipse_mode, is_portrait;
|
|
float scale;
|
|
float fadeout_mul;
|
|
};
|
|
static void calcPCVignetteParams (int fW, int fH, int oW, int oH, const PCVignetteParams& pcvignette, const CropParams &crop, struct pcv_params& pcv)
|
|
{
|
|
|
|
// ellipse formula: (x/a)^2 + (y/b)^2 = 1
|
|
double roundness = pcvignette.roundness / 100.0;
|
|
pcv.feather = pcvignette.feather / 100.0;
|
|
|
|
if (crop.enabled) {
|
|
pcv.w = (crop.w * oW) / fW;
|
|
pcv.h = (crop.h * oH) / fH;
|
|
pcv.x1 = (crop.x * oW) / fW;
|
|
pcv.y1 = (crop.y * oH) / fH;
|
|
pcv.x2 = pcv.x1 + pcv.w;
|
|
pcv.y2 = pcv.y1 + pcv.h;
|
|
} else {
|
|
pcv.x1 = 0, pcv.y1 = 0;
|
|
pcv.x2 = oW, pcv.y2 = oH;
|
|
pcv.w = oW;
|
|
pcv.h = oH;
|
|
}
|
|
|
|
pcv.fadeout_mul = 1.0 / (0.05 * sqrtf (oW * oW + oH * oH));
|
|
float short_side = (pcv.w < pcv.h) ? pcv.w : pcv.h;
|
|
float long_side = (pcv.w > pcv.h) ? pcv.w : pcv.h;
|
|
|
|
pcv.sep = 2;
|
|
pcv.sepmix = 0;
|
|
pcv.oe_a = sqrt (2.0) * long_side * 0.5;
|
|
pcv.oe_b = pcv.oe_a * short_side / long_side;
|
|
pcv.ie_mul = (1.0 / sqrt (2.0)) * (1.0 - pcv.feather);
|
|
pcv.is_super_ellipse_mode = false;
|
|
pcv.is_portrait = (pcv.w < pcv.h);
|
|
|
|
if (roundness < 0.5) {
|
|
// make super-ellipse of higher and higher degree
|
|
pcv.is_super_ellipse_mode = true;
|
|
float sepf = 2 + 4 * powf (1.0 - 2 * roundness, 1.3); // gamma 1.3 used to balance the effect in the 0.0...0.5 roundness range
|
|
pcv.sep = ((int)sepf) & ~0x1;
|
|
pcv.sepmix = (sepf - pcv.sep) * 0.5; // 0.0 to 1.0
|
|
pcv.oe1_a = powf (2.0, 1.0 / pcv.sep) * long_side * 0.5;
|
|
pcv.oe1_b = pcv.oe1_a * short_side / long_side;
|
|
pcv.ie1_mul = (1.0 / powf (2.0, 1.0 / pcv.sep)) * (1.0 - pcv.feather);
|
|
pcv.oe2_a = powf (2.0, 1.0 / (pcv.sep + 2)) * long_side * 0.5;
|
|
pcv.oe2_b = pcv.oe2_a * short_side / long_side;
|
|
pcv.ie2_mul = (1.0 / powf (2.0, 1.0 / (pcv.sep + 2))) * (1.0 - pcv.feather);
|
|
}
|
|
|
|
if (roundness > 0.5) {
|
|
// scale from fitted ellipse towards circle
|
|
float rad = sqrtf (pcv.w * pcv.w + pcv.h * pcv.h) / 2.0;
|
|
float diff_a = rad - pcv.oe_a;
|
|
float diff_b = rad - pcv.oe_b;
|
|
pcv.oe_a = pcv.oe_a + diff_a * 2 * (roundness - 0.5);
|
|
pcv.oe_b = pcv.oe_b + diff_b * 2 * (roundness - 0.5);
|
|
}
|
|
|
|
pcv.scale = powf (2, -pcvignette.strength);
|
|
|
|
if (pcvignette.strength >= 6.0) {
|
|
pcv.scale = 0.0;
|
|
}
|
|
}
|
|
|
|
static float calcPCVignetteFactor (const struct pcv_params& pcv, int x, int y)
|
|
{
|
|
|
|
float fo = 1.f;
|
|
|
|
if (x < pcv.x1 || x > pcv.x2 || y < pcv.y1 || y > pcv.y2) {
|
|
/*
|
|
The initial plan was to have 1.0 directly outside the crop box (ie no fading), but due to
|
|
rounding/trunction here and there I didn't succeed matching up exactly on the pixel with
|
|
the crop box. To hide that mismatch I made a fade.
|
|
*/
|
|
int dist_x = (x < pcv.x1) ? pcv.x1 - x : x - pcv.x2;
|
|
int dist_y = (y < pcv.y1) ? pcv.y1 - y : y - pcv.y2;
|
|
|
|
if (dist_x < 0) {
|
|
dist_x = 0;
|
|
}
|
|
|
|
if (dist_y < 0) {
|
|
dist_y = 0;
|
|
}
|
|
|
|
fo = sqrtf (dist_x * dist_x + dist_y * dist_y) * pcv.fadeout_mul;
|
|
|
|
if (fo >= 1.f) {
|
|
return 1.f;
|
|
}
|
|
}
|
|
|
|
float a = fabs ((x - pcv.x1) - pcv.w * 0.5f);
|
|
float b = fabs ((y - pcv.y1) - pcv.h * 0.5f);
|
|
|
|
if (pcv.is_portrait) {
|
|
std::swap (a, b);
|
|
}
|
|
|
|
float dist = normn (a, b, 2);
|
|
float dist_oe, dist_ie;
|
|
float2 sincosval;
|
|
|
|
if (dist == 0.0f) {
|
|
sincosval.y = 1.0f; // cos
|
|
sincosval.x = 0.0f; // sin
|
|
} else {
|
|
sincosval.y = a / dist; // cos
|
|
sincosval.x = b / dist; // sin
|
|
}
|
|
|
|
if (pcv.is_super_ellipse_mode) {
|
|
float dist_oe1 = pcv.oe1_a * pcv.oe1_b / normn (pcv.oe1_b * sincosval.y, pcv.oe1_a * sincosval.x, pcv.sep);
|
|
float dist_oe2 = pcv.oe2_a * pcv.oe2_b / normn (pcv.oe2_b * sincosval.y, pcv.oe2_a * sincosval.x, pcv.sep + 2);
|
|
float dist_ie1 = pcv.ie1_mul * dist_oe1;
|
|
float dist_ie2 = pcv.ie2_mul * dist_oe2;
|
|
dist_oe = dist_oe1 * (1.f - pcv.sepmix) + dist_oe2 * pcv.sepmix;
|
|
dist_ie = dist_ie1 * (1.f - pcv.sepmix) + dist_ie2 * pcv.sepmix;
|
|
} else {
|
|
dist_oe = pcv.oe_a * pcv.oe_b / sqrtf (SQR (pcv.oe_b * sincosval.y) + SQR (pcv.oe_a * sincosval.x));
|
|
dist_ie = pcv.ie_mul * dist_oe;
|
|
}
|
|
|
|
if (dist <= dist_ie) {
|
|
return 1.f;
|
|
}
|
|
|
|
float val;
|
|
|
|
if (dist >= dist_oe) {
|
|
val = pcv.scale;
|
|
} else {
|
|
val = rtengine::RT_PI_F_2 * (dist - dist_ie) / (dist_oe - dist_ie);
|
|
|
|
if (pcv.scale < 1.f) {
|
|
val = pow4 (xcosf (val));
|
|
} else {
|
|
val = 1 - pow4 (xsinf (val));
|
|
}
|
|
|
|
val = pcv.scale + val * (1.f - pcv.scale);
|
|
}
|
|
|
|
if (fo < 1.f) {
|
|
val = fo + val * (1.f - fo);
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
void ImProcFunctions::transformLuminanceOnly (Imagefloat* original, Imagefloat* transformed, int cx, int cy, int oW, int oH, int fW, int fH)
|
|
{
|
|
|
|
const bool applyVignetting = needsVignetting();
|
|
const bool applyGradient = needsGradient();
|
|
const bool applyPCVignetting = needsPCVignetting();
|
|
|
|
double vig_w2, vig_h2, maxRadius, v, b, mul;
|
|
|
|
if (applyVignetting) {
|
|
calcVignettingParams (oW, oH, params->vignetting, vig_w2, vig_h2, maxRadius, v, b, mul);
|
|
}
|
|
|
|
struct grad_params gp;
|
|
|
|
if (applyGradient) {
|
|
calcGradientParams (oW, oH, params->gradient, gp);
|
|
}
|
|
|
|
struct pcv_params pcv;
|
|
|
|
if (applyPCVignetting) {
|
|
//fprintf(stderr, "%d %d | %d %d | %d %d | %d %d [%d %d]\n", fW, fH, oW, oH, transformed->getWidth(), transformed->getHeight(), cx, cy, params->crop.w, params->crop.h);
|
|
calcPCVignetteParams (fW, fH, oW, oH, params->pcvignette, params->crop, pcv);
|
|
}
|
|
|
|
bool darkening = (params->vignetting.amount <= 0.0);
|
|
#ifdef _OPENMP
|
|
#pragma omp parallel for schedule(dynamic,16) if (multiThread)
|
|
#endif
|
|
|
|
for (int y = 0; y < transformed->getHeight(); y++) {
|
|
double vig_y_d = applyVignetting ? (double) (y + cy) - vig_h2 : 0.0;
|
|
|
|
for (int x = 0; x < transformed->getWidth(); x++) {
|
|
double factor = 1.0;
|
|
|
|
if (applyVignetting) {
|
|
double vig_x_d = (double) (x + cx) - vig_w2 ;
|
|
double r = sqrt (vig_x_d * vig_x_d + vig_y_d * vig_y_d);
|
|
|
|
if (darkening) {
|
|
factor /= std::max (v + mul * tanh (b * (maxRadius - r) / maxRadius), 0.001);
|
|
} else {
|
|
factor = v + mul * tanh (b * (maxRadius - r) / maxRadius);
|
|
}
|
|
}
|
|
|
|
if (applyGradient) {
|
|
factor *= calcGradientFactor (gp, cx + x, cy + y);
|
|
}
|
|
|
|
if (applyPCVignetting) {
|
|
factor *= calcPCVignetteFactor (pcv, cx + x, cy + y);
|
|
}
|
|
|
|
transformed->r (y, x) = original->r (y, x) * factor;
|
|
transformed->g (y, x) = original->g (y, x) * factor;
|
|
transformed->b (y, x) = original->b (y, x) * factor;
|
|
}
|
|
}
|
|
}
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|
|
|
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|
void ImProcFunctions::transformGeneral(bool highQuality, Imagefloat *original, Imagefloat *transformed, int cx, int cy, int sx, int sy, int oW, int oH, int fW, int fH, const LensCorrection *pLCPMap)
|
|
{
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// set up stuff, depending on the mode we are
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const bool enableLCPDist = pLCPMap && params->lensProf.useDist;
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const bool enableCA = highQuality && needsCA();
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const bool enableGradient = needsGradient();
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const bool enablePCVignetting = needsPCVignetting();
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const bool enableVignetting = needsVignetting();
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const bool enablePerspective = needsPerspective();
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const bool enableDistortion = needsDistortion();
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|
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const double w2 = static_cast<double>(oW) / 2.0 - 0.5;
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const double h2 = static_cast<double>(oH) / 2.0 - 0.5;
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|
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double vig_w2, vig_h2, maxRadius, v, b, mul;
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calcVignettingParams(oW, oH, params->vignetting, vig_w2, vig_h2, maxRadius, v, b, mul);
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grad_params gp;
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|
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if (enableGradient) {
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calcGradientParams(oW, oH, params->gradient, gp);
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}
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|
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pcv_params pcv;
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|
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if (enablePCVignetting) {
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calcPCVignetteParams(fW, fH, oW, oH, params->pcvignette, params->crop, pcv);
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}
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|
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const std::array<const float* const*, 3> chOrig = {
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original->r.ptrs,
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original->g.ptrs,
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original->b.ptrs
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};
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const std::array<float* const*, 3> chTrans = {
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transformed->r.ptrs,
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transformed->g.ptrs,
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transformed->b.ptrs
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|
};
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|
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|
// auxiliary variables for c/a correction
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|
const std::array<double, 3> chDist = {
|
|
enableCA
|
|
? params->cacorrection.red
|
|
: 0.0,
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|
0.0,
|
|
enableCA
|
|
? params->cacorrection.blue
|
|
: 0.0
|
|
};
|
|
|
|
// auxiliary variables for distortion correction
|
|
const double distAmount = params->distortion.amount;
|
|
|
|
// auxiliary variables for rotation
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|
const double cost = cos(params->rotate.degree * rtengine::RT_PI / 180.0);
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|
const double sint = sin(params->rotate.degree * rtengine::RT_PI / 180.0);
|
|
|
|
// auxiliary variables for vertical perspective correction
|
|
const double vpdeg = params->perspective.vertical / 100.0 * 45.0;
|
|
const double vpalpha = (90.0 - vpdeg) / 180.0 * rtengine::RT_PI;
|
|
const double vpteta = fabs(vpalpha - rtengine::RT_PI / 2) < 3e-4 ? 0.0 : acos((vpdeg > 0 ? 1.0 : -1.0) * sqrt((-SQR(oW * tan(vpalpha)) + (vpdeg > 0 ? 1.0 : -1.0) *
|
|
oW * tan(vpalpha) * sqrt(SQR(4 * maxRadius) + SQR(oW * tan(vpalpha)))) / (SQR(maxRadius) * 8)));
|
|
const double vpcospt = (vpdeg >= 0 ? 1.0 : -1.0) * cos(vpteta);
|
|
const double vptanpt = tan(vpteta);
|
|
|
|
// auxiliary variables for horizontal perspective correction
|
|
const double hpdeg = params->perspective.horizontal / 100.0 * 45.0;
|
|
const double hpalpha = (90.0 - hpdeg) / 180.0 * rtengine::RT_PI;
|
|
const double hpteta = fabs(hpalpha - rtengine::RT_PI / 2) < 3e-4 ? 0.0 : acos((hpdeg > 0 ? 1.0 : -1.0) * sqrt((-SQR(oH * tan(hpalpha)) + (hpdeg > 0 ? 1.0 : -1.0) *
|
|
oH * tan(hpalpha) * sqrt(SQR(4 * maxRadius) + SQR(oH * tan(hpalpha)))) / (SQR(maxRadius) * 8)));
|
|
const double hpcospt = (hpdeg >= 0 ? 1.0 : -1.0) * cos(hpteta);
|
|
const double hptanpt = tan(hpteta);
|
|
|
|
const double ascale = params->commonTrans.autofill ? getTransformAutoFill(oW, oH, pLCPMap) : 1.0;
|
|
|
|
const bool darkening = (params->vignetting.amount <= 0.0);
|
|
const double centerFactorx = cx - w2;
|
|
const double centerFactory = cy - h2;
|
|
|
|
// main cycle
|
|
#ifdef _OPENMP
|
|
#pragma omp parallel for schedule(dynamic, 16) if(multiThread)
|
|
#endif
|
|
|
|
for (int y = 0; y < transformed->getHeight(); ++y) {
|
|
for (int x = 0; x < transformed->getWidth(); ++x) {
|
|
double x_d = x;
|
|
double y_d = y;
|
|
|
|
if (enableLCPDist) {
|
|
pLCPMap->correctDistortion(x_d, y_d, cx, cy, ascale); // must be first transform
|
|
} else {
|
|
x_d *= ascale;
|
|
y_d *= ascale;
|
|
}
|
|
|
|
x_d += ascale * centerFactorx; // centering x coord & scale
|
|
y_d += ascale * centerFactory; // centering y coord & scale
|
|
|
|
if (enablePerspective) {
|
|
// horizontal perspective transformation
|
|
y_d *= maxRadius / (maxRadius + x_d * hptanpt);
|
|
x_d *= maxRadius * hpcospt / (maxRadius + x_d * hptanpt);
|
|
|
|
// vertical perspective transformation
|
|
x_d *= maxRadius / (maxRadius - y_d * vptanpt);
|
|
y_d *= maxRadius * vpcospt / (maxRadius - y_d * vptanpt);
|
|
}
|
|
|
|
// rotate
|
|
const double Dxc = x_d * cost - y_d * sint;
|
|
const double Dyc = x_d * sint + y_d * cost;
|
|
|
|
// distortion correction
|
|
double s = 1.0;
|
|
|
|
if (enableDistortion) {
|
|
const double r = sqrt(Dxc * Dxc + Dyc * Dyc) / maxRadius;
|
|
s = 1.0 - distAmount + distAmount * r;
|
|
}
|
|
|
|
for (int c = 0; c < (enableCA ? 3 : 1); ++c) {
|
|
double Dx = Dxc * (s + chDist[c]);
|
|
double Dy = Dyc * (s + chDist[c]);
|
|
|
|
// de-center
|
|
Dx += w2;
|
|
Dy += h2;
|
|
|
|
// Extract integer and fractions of source screen coordinates
|
|
int xc = Dx;
|
|
Dx -= xc;
|
|
xc -= sx;
|
|
int yc = Dy;
|
|
Dy -= yc;
|
|
yc -= sy;
|
|
|
|
// Convert only valid pixels
|
|
if (yc >= 0 && yc < original->getHeight() && xc >= 0 && xc < original->getWidth()) {
|
|
// multiplier for vignetting correction
|
|
double vignmul = 1.0;
|
|
|
|
if (enableVignetting) {
|
|
const double vig_x_d = ascale * (x + cx - vig_w2); // centering x coord & scale
|
|
const double vig_y_d = ascale * (y + cy - vig_h2); // centering y coord & scale
|
|
const double vig_Dx = vig_x_d * cost - vig_y_d * sint;
|
|
const double vig_Dy = vig_x_d * sint + vig_y_d * cost;
|
|
const double r2 = sqrt(vig_Dx * vig_Dx + vig_Dy * vig_Dy);
|
|
if (darkening) {
|
|
vignmul /= std::max(v + mul * tanh(b * (maxRadius - s * r2) / maxRadius), 0.001);
|
|
} else {
|
|
vignmul *= (v + mul * tanh(b * (maxRadius - s * r2) / maxRadius));
|
|
}
|
|
}
|
|
|
|
if (enableGradient) {
|
|
vignmul *= calcGradientFactor(gp, cx + x, cy + y);
|
|
}
|
|
|
|
if (enablePCVignetting) {
|
|
vignmul *= calcPCVignetteFactor(pcv, cx + x, cy + y);
|
|
}
|
|
|
|
if (yc > 0 && yc < original->getHeight() - 2 && xc > 0 && xc < original->getWidth() - 2) {
|
|
// all interpolation pixels inside image
|
|
if (enableCA) {
|
|
interpolateTransformChannelsCubic(chOrig[c], xc - 1, yc - 1, Dx, Dy, chTrans[c][y][x], vignmul);
|
|
} else if (!highQuality) {
|
|
transformed->r(y, x) = vignmul * (original->r(yc, xc) * (1.0 - Dx) * (1.0 - Dy) + original->r(yc, xc + 1) * Dx * (1.0 - Dy) + original->r(yc + 1, xc) * (1.0 - Dx) * Dy + original->r(yc + 1, xc + 1) * Dx * Dy);
|
|
transformed->g(y, x) = vignmul * (original->g(yc, xc) * (1.0 - Dx) * (1.0 - Dy) + original->g(yc, xc + 1) * Dx * (1.0 - Dy) + original->g(yc + 1, xc) * (1.0 - Dx) * Dy + original->g(yc + 1, xc + 1) * Dx * Dy);
|
|
transformed->b(y, x) = vignmul * (original->b(yc, xc) * (1.0 - Dx) * (1.0 - Dy) + original->b(yc, xc + 1) * Dx * (1.0 - Dy) + original->b(yc + 1, xc) * (1.0 - Dx) * Dy + original->b(yc + 1, xc + 1) * Dx * Dy);
|
|
} else {
|
|
interpolateTransformCubic(original, xc - 1, yc - 1, Dx, Dy, transformed->r(y, x), transformed->g(y, x), transformed->b(y, x), vignmul);
|
|
}
|
|
} else {
|
|
// edge pixels
|
|
const int y1 = LIM(yc, 0, original->getHeight() - 1);
|
|
const int y2 = LIM(yc + 1, 0, original->getHeight() - 1);
|
|
const int x1 = LIM(xc, 0, original->getWidth() - 1);
|
|
const int x2 = LIM(xc + 1, 0, original->getWidth() - 1);
|
|
|
|
if (enableCA) {
|
|
chTrans[c][y][x] = vignmul * (chOrig[c][y1][x1] * (1.0 - Dx) * (1.0 - Dy) + chOrig[c][y1][x2] * Dx * (1.0 - Dy) + chOrig[c][y2][x1] * (1.0 - Dx) * Dy + chOrig[c][y2][x2] * Dx * Dy);
|
|
} else {
|
|
transformed->r(y, x) = vignmul * (original->r(y1, x1) * (1.0 - Dx) * (1.0 - Dy) + original->r(y1, x2) * Dx * (1.0 - Dy) + original->r(y2, x1) * (1.0 - Dx) * Dy + original->r(y2, x2) * Dx * Dy);
|
|
transformed->g(y, x) = vignmul * (original->g(y1, x1) * (1.0 - Dx) * (1.0 - Dy) + original->g(y1, x2) * Dx * (1.0 - Dy) + original->g(y2, x1) * (1.0 - Dx) * Dy + original->g(y2, x2) * Dx * Dy);
|
|
transformed->b(y, x) = vignmul * (original->b(y1, x1) * (1.0 - Dx) * (1.0 - Dy) + original->b(y1, x2) * Dx * (1.0 - Dy) + original->b(y2, x1) * (1.0 - Dx) * Dy + original->b(y2, x2) * Dx * Dy);
|
|
}
|
|
}
|
|
} else {
|
|
if (enableCA) {
|
|
// not valid (source pixel x,y not inside source image, etc.)
|
|
chTrans[c][y][x] = 0;
|
|
} else {
|
|
transformed->r(y, x) = 0;
|
|
transformed->g(y, x) = 0;
|
|
transformed->b(y, x) = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void ImProcFunctions::transformLCPCAOnly(Imagefloat *original, Imagefloat *transformed, int cx, int cy, const LensCorrection *pLCPMap)
|
|
{
|
|
assert(pLCPMap && params->lensProf.useCA && pLCPMap->isCACorrectionAvailable());
|
|
|
|
float** chOrig[3];
|
|
chOrig[0] = original->r.ptrs;
|
|
chOrig[1] = original->g.ptrs;
|
|
chOrig[2] = original->b.ptrs;
|
|
|
|
float** chTrans[3];
|
|
chTrans[0] = transformed->r.ptrs;
|
|
chTrans[1] = transformed->g.ptrs;
|
|
chTrans[2] = transformed->b.ptrs;
|
|
|
|
#ifdef _OPENMP
|
|
#pragma omp parallel for if (multiThread)
|
|
#endif
|
|
|
|
for (int y = 0; y < transformed->getHeight(); y++) {
|
|
for (int x = 0; x < transformed->getWidth(); x++) {
|
|
for (int c = 0; c < 3; c++) {
|
|
double Dx = x;
|
|
double Dy = y;
|
|
|
|
pLCPMap->correctCA(Dx, Dy, cx, cy, c);
|
|
|
|
// Extract integer and fractions of coordinates
|
|
int xc = (int)Dx;
|
|
Dx -= (double)xc;
|
|
int yc = (int)Dy;
|
|
Dy -= (double)yc;
|
|
|
|
// Convert only valid pixels
|
|
if (yc >= 0 && yc < original->getHeight() && xc >= 0 && xc < original->getWidth()) {
|
|
|
|
// multiplier for vignetting correction
|
|
if (yc > 0 && yc < original->getHeight() - 2 && xc > 0 && xc < original->getWidth() - 2) {
|
|
// all interpolation pixels inside image
|
|
interpolateTransformChannelsCubic (chOrig[c], xc - 1, yc - 1, Dx, Dy, chTrans[c][y][x], 1.0);
|
|
} else {
|
|
// edge pixels
|
|
int y1 = LIM (yc, 0, original->getHeight() - 1);
|
|
int y2 = LIM (yc + 1, 0, original->getHeight() - 1);
|
|
int x1 = LIM (xc, 0, original->getWidth() - 1);
|
|
int x2 = LIM (xc + 1, 0, original->getWidth() - 1);
|
|
|
|
chTrans[c][y][x] = (chOrig[c][y1][x1] * (1.0 - Dx) * (1.0 - Dy) + chOrig[c][y1][x2] * Dx * (1.0 - Dy) + chOrig[c][y2][x1] * (1.0 - Dx) * Dy + chOrig[c][y2][x2] * Dx * Dy);
|
|
}
|
|
} else {
|
|
// not valid (source pixel x,y not inside source image, etc.)
|
|
chTrans[c][y][x] = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
double ImProcFunctions::getTransformAutoFill (int oW, int oH, const LensCorrection *pLCPMap) const
|
|
{
|
|
if (!needsCA() && !needsDistortion() && !needsRotation() && !needsPerspective() && (!params->lensProf.useDist || pLCPMap == nullptr)) {
|
|
return 1;
|
|
}
|
|
|
|
double scaleU = 2, scaleL = 0.001; // upper and lower border, iterate inbetween
|
|
|
|
do {
|
|
double scale = (scaleU + scaleL) * 0.5;
|
|
|
|
int orx, ory, orw, orh;
|
|
bool clipped = transCoord (oW, oH, 0, 0, oW, oH, orx, ory, orw, orh, scale, pLCPMap);
|
|
|
|
if (clipped) {
|
|
scaleU = scale;
|
|
} else {
|
|
scaleL = scale;
|
|
}
|
|
} while (scaleU - scaleL > 0.001);
|
|
|
|
return scaleL;
|
|
}
|
|
|
|
bool ImProcFunctions::needsCA () const
|
|
{
|
|
return fabs (params->cacorrection.red) > 1e-15 || fabs (params->cacorrection.blue) > 1e-15;
|
|
}
|
|
|
|
bool ImProcFunctions::needsDistortion () const
|
|
{
|
|
return fabs (params->distortion.amount) > 1e-15;
|
|
}
|
|
|
|
bool ImProcFunctions::needsRotation () const
|
|
{
|
|
return fabs (params->rotate.degree) > 1e-15;
|
|
}
|
|
|
|
bool ImProcFunctions::needsPerspective () const
|
|
{
|
|
return params->perspective.horizontal || params->perspective.vertical;
|
|
}
|
|
|
|
bool ImProcFunctions::needsGradient () const
|
|
{
|
|
return params->gradient.enabled && fabs (params->gradient.strength) > 1e-15;
|
|
}
|
|
|
|
bool ImProcFunctions::needsPCVignetting () const
|
|
{
|
|
return params->pcvignette.enabled && fabs (params->pcvignette.strength) > 1e-15;
|
|
}
|
|
|
|
bool ImProcFunctions::needsVignetting () const
|
|
{
|
|
return params->vignetting.amount;
|
|
}
|
|
|
|
bool ImProcFunctions::needsLCP () const
|
|
{
|
|
return params->lensProf.useLcp();
|
|
}
|
|
|
|
bool ImProcFunctions::needsLensfun() const
|
|
{
|
|
return params->lensProf.useLensfun();
|
|
}
|
|
|
|
bool ImProcFunctions::needsTransform () const
|
|
{
|
|
return needsCA () || needsDistortion () || needsRotation () || needsPerspective () || needsGradient () || needsPCVignetting () || needsVignetting () || needsLCP() || needsLensfun();
|
|
}
|
|
|
|
|
|
}
|
|
|