a41aa73124
Found via codespell v2.0.dev0 ``` codespell -q 3 -I ../rawtherapy-whitelist.txt -S ./rtdata/languages -L bord,hist,fo,reall,bloc,alph,dof,thre,makro,chang,currentry,portugues,vektor,ue ```
89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
/* -*- C++ -*-
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*
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* This file is part of RawTherapee.
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*
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* Ported from G'MIC by Alberto Griggio <alberto.griggio@gmail.com>
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*
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* The original implementation in G'MIC was authored by Arto Huotari, and was
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* released under the CeCILL free software license (see
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* http://www.cecill.info/licences/Licence_CeCILL_V2-en.html)
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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 "array2D.h"
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#include "gauss.h"
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#include "labimage.h"
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#include "improcfun.h"
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#include "procparams.h"
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#include "settings.h"
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namespace rtengine
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{
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void ImProcFunctions::localContrast(LabImage *lab, float **destination, const rtengine::procparams::LocalContrastParams &localContrastParams, bool fftwlc, double scale)
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{
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if (!localContrastParams.enabled) {
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return;
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}
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const int width = lab->W;
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const int height = lab->H;
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const float a = localContrastParams.amount;
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const float dark = localContrastParams.darkness;
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const float light = localContrastParams.lightness;
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array2D<float> buf(width, height);
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float sigma = localContrastParams.radius / scale;
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//printf("wi%i he=%i am=%f da=%f li=%f si=%f\n", width, height, a, dark, light, sigma);
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if(!fftwlc) {
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#ifdef _OPENMP
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#pragma omp parallel if(multiThread)
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#endif
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gaussianBlur(lab->L, buf, width, height, sigma);
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} else {
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float kr = 1.f;
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//emprical adjustment between FFTW radius and Gaussainblur
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//under 50 ==> 10.f
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//above 400 ==> 1.f
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if(settings->fftwsigma == false) {//empirical formula
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float ak = -9.f / 350.f;
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float bk = 10.f - 50.f * ak;
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kr = ak * sigma + bk;
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if(sigma < 50.f) kr = 10.f;
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if(sigma > 400.f) kr = 1.f;
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} else {//sigma *= sigma
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kr = sigma;
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}
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//OPENMP disabled
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ImProcFunctions::fftw_convol_blur2(lab->L, buf, width, height, kr * sigma, 0, 0);
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}
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#ifdef _OPENMP
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#pragma omp parallel for if(multiThread)
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#endif
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for (int y = 0; y < height; ++y) {
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for (int x = 0; x < width; ++x) {
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float bufval = (lab->L[y][x] - buf[y][x]) * a;
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if (dark != 1 || light != 1) {
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bufval *= (bufval > 0.f) ? light : dark;
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}
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destination[y][x] = LIM(lab->L[y][x] + bufval, 0.0001f, 32767.f);
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}
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}
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}
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} // namespace rtengine
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