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Optimization of RGB-Denoise, Issue 1755

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Ingo
2013-03-09 11:49:17 +01:00
parent 2618f96193
commit ab97db2862
1 changed files with 63 additions and 60 deletions
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123
rtengine/FTblockDN.cc
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@@ -38,6 +38,8 @@
#include "iccmatrices.h" #include "iccmatrices.h"
#include "boxblur.h" #include "boxblur.h"
#include "rt_math.h" #include "rt_math.h"
#include "sleef.c"
#ifdef _OPENMP #ifdef _OPENMP
#include <omp.h> #include <omp.h>
@@ -102,7 +104,7 @@ namespace rtengine {
memcpy(dst->data,src->data,dst->width*dst->height*3*sizeof(float)); memcpy(dst->data,src->data,dst->width*dst->height*3*sizeof(float));
return; return;
} }
perf=false; perf=false;
if(dnparams.dmethod=="RGB") perf=true;//RGB mode if(dnparams.dmethod=="RGB") perf=true;//RGB mode
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// gamma transform for input data // gamma transform for input data
@@ -110,7 +112,7 @@ namespace rtengine {
float gamthresh = 0.001f; float gamthresh = 0.001f;
if(!isRAW) {//reduce gamma under 1 for Lab mode ==> TIF and JPG if(!isRAW) {//reduce gamma under 1 for Lab mode ==> TIF and JPG
if(gam <1.9f) gam=1.f - (1.9f-gam)/3.f;//minimum gamma 0.7 if(gam <1.9f) gam=1.f - (1.9f-gam)/3.f;//minimum gamma 0.7
else if (gam >= 1.9f && gam <= 3.f) gam=(1.4f/1.1f)*gam - 1.41818f; else if (gam >= 1.9f && gam <= 3.f) gam=(1.4f/1.1f)*gam - 1.41818f;
} }
float gamslope = exp(log((double)gamthresh)/gam)/gamthresh; float gamslope = exp(log((double)gamthresh)/gam)/gamthresh;
@@ -141,7 +143,7 @@ namespace rtengine {
for (int i=0; i<65536; i++) { for (int i=0; i<65536; i++) {
igamcurve[i] = (Color::gamman((float)i/32768.0f,igam) * 65535.0f); igamcurve[i] = (Color::gamman((float)i/32768.0f,igam) * 65535.0f);
} }
} }
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -151,7 +153,7 @@ namespace rtengine {
const float gain = pow (2.0f, dnparams.expcomp); const float gain = pow (2.0f, dnparams.expcomp);
float incr=1.f; float incr=1.f;
float noisevar_Ldetail = SQR((SQR(100.f-dnparams.Ldetail) + 50.f*(100.f-dnparams.Ldetail)) * TS * 0.5f * incr); float noisevar_Ldetail = SQR((SQR(100.f-dnparams.Ldetail) + 50.f*(100.f-dnparams.Ldetail)) * TS * 0.5f * incr);
noisered=1.f;//chroma red noisered=1.f;//chroma red
if(dnparams.redchro<0.1f) {noisered=0.001f+SQR((100.f + dnparams.redchro)/100.0f);} if(dnparams.redchro<0.1f) {noisered=0.001f+SQR((100.f + dnparams.redchro)/100.0f);}
if(dnparams.redchro>0.1f) {noisered=1.f+SQR((dnparams.redchro));} if(dnparams.redchro>0.1f) {noisered=1.f+SQR((dnparams.redchro));}
@@ -159,7 +161,7 @@ namespace rtengine {
noiseblue=1.f;//chroma blue noiseblue=1.f;//chroma blue
if(dnparams.bluechro<0.1f) {noiseblue=0.001f+SQR((100.f + dnparams.bluechro)/100.0f);} if(dnparams.bluechro<0.1f) {noiseblue=0.001f+SQR((100.f + dnparams.bluechro)/100.0f);}
if(dnparams.bluechro>0.1f) {noiseblue=1.f+SQR((dnparams.bluechro));} if(dnparams.bluechro>0.1f) {noiseblue=1.f+SQR((dnparams.bluechro));}
array2D<float> tilemask_in(TS,TS); array2D<float> tilemask_in(TS,TS);
array2D<float> tilemask_out(TS,TS); array2D<float> tilemask_out(TS,TS);
@@ -274,9 +276,9 @@ namespace rtengine {
{wiprof[1][0],wiprof[1][1],wiprof[1][2]}, {wiprof[1][0],wiprof[1][1],wiprof[1][2]},
{wiprof[2][0],wiprof[2][1],wiprof[2][2]} {wiprof[2][0],wiprof[2][1],wiprof[2][2]}
}; };
#ifdef _OPENMP #ifdef _OPENMP
#pragma omp critical #pragma omp critical
#endif #endif
@@ -298,12 +300,12 @@ namespace rtengine {
array2D<float> Lin(width,height); array2D<float> Lin(width,height);
//wavelet denoised image //wavelet denoised image
LabImage * labdn = new LabImage(width,height); LabImage * labdn = new LabImage(width,height);
//residual between input and denoised L channel //residual between input and denoised L channel
array2D<float> Ldetail(width,height,ARRAY2D_CLEAR_DATA); array2D<float> Ldetail(width,height,ARRAY2D_CLEAR_DATA);
//pixel weight //pixel weight
array2D<float> totwt(width,height,ARRAY2D_CLEAR_DATA);//weight for combining DCT blocks array2D<float> totwt(width,height,ARRAY2D_CLEAR_DATA);//weight for combining DCT blocks
// //
//#ifdef _OPENMP //#ifdef _OPENMP
@@ -317,7 +319,7 @@ namespace rtengine {
int i1 = i - tiletop; int i1 = i - tiletop;
for (int j=tileleft/*, j1=0*/; j<tileright; j++/*, j1++*/) { for (int j=tileleft/*, j1=0*/; j<tileright; j++/*, j1++*/) {
int j1 = j - tileleft; int j1 = j - tileleft;
//modification Jacques feb 2013 //modification Jacques feb 2013
float R_ = gain*src->r(i,j); float R_ = gain*src->r(i,j);
float G_ = gain*src->g(i,j); float G_ = gain*src->g(i,j);
float B_ = gain*src->b(i,j); float B_ = gain*src->b(i,j);
@@ -327,19 +329,19 @@ namespace rtengine {
//finally I opted fot gamma_26_11 //finally I opted fot gamma_26_11
R_ = Color::igammatab_26_11[R_]; R_ = Color::igammatab_26_11[R_];
G_ = Color::igammatab_26_11[G_]; G_ = Color::igammatab_26_11[G_];
B_ = Color::igammatab_26_11[B_]; B_ = Color::igammatab_26_11[B_];
//apply gamma noise standard (slider) //apply gamma noise standard (slider)
R_ = R_<65535.0f ? gamcurve[R_] : (Color::gamman((double)R_/65535.0, gam)*32768.0f); R_ = R_<65535.0f ? gamcurve[R_] : (Color::gamman((double)R_/65535.0, gam)*32768.0f);
G_ = G_<65535.0f ? gamcurve[G_] : (Color::gamman((double)G_/65535.0, gam)*32768.0f); G_ = G_<65535.0f ? gamcurve[G_] : (Color::gamman((double)G_/65535.0, gam)*32768.0f);
B_ = B_<65535.0f ? gamcurve[B_] : (Color::gamman((double)B_/65535.0, gam)*32768.0f); B_ = B_<65535.0f ? gamcurve[B_] : (Color::gamman((double)B_/65535.0, gam)*32768.0f);
//true conversion xyz=>Lab //true conversion xyz=>Lab
float L,a,b; float L,a,b;
float X,Y,Z; float X,Y,Z;
Color::rgbxyz(R_,G_,B_,X,Y,Z,wp); Color::rgbxyz(R_,G_,B_,X,Y,Z,wp);
//convert to Lab //convert to Lab
Color::XYZ2Lab(X, Y, Z, L, a, b); Color::XYZ2Lab(X, Y, Z, L, a, b);
labdn->L[i1][j1] = L; labdn->L[i1][j1] = L;
labdn->a[i1][j1] = a; labdn->a[i1][j1] = a;
labdn->b[i1][j1] = b; labdn->b[i1][j1] = b;
Lin[i1][j1] = L; Lin[i1][j1] = L;
@@ -370,7 +372,7 @@ namespace rtengine {
// totwt[i1][j1] = 0; // totwt[i1][j1] = 0;
} }
} }
} }
} else {//image is not raw; use Lab parametrization } else {//image is not raw; use Lab parametrization
for (int i=tiletop/*, i1=0*/; i<tilebottom; i++/*, i1++*/) { for (int i=tiletop/*, i1=0*/; i<tilebottom; i++/*, i1++*/) {
@@ -383,17 +385,17 @@ namespace rtengine {
// solution ==> save TIF with gamma sRGB and re open // solution ==> save TIF with gamma sRGB and re open
float rtmp = Color::igammatab_srgb[ src->r(i,j) ]; float rtmp = Color::igammatab_srgb[ src->r(i,j) ];
float gtmp = Color::igammatab_srgb[ src->g(i,j) ]; float gtmp = Color::igammatab_srgb[ src->g(i,j) ];
float btmp = Color::igammatab_srgb[ src->b(i,j) ]; float btmp = Color::igammatab_srgb[ src->b(i,j) ];
//modification Jacques feb 2013 //modification Jacques feb 2013
// gamma slider different from raw // gamma slider different from raw
rtmp = rtmp<65535.0f ? gamcurve[rtmp] : (Color::gamman((double)rtmp/65535.0, gam)*32768.0f); rtmp = rtmp<65535.0f ? gamcurve[rtmp] : (Color::gamman((double)rtmp/65535.0, gam)*32768.0f);
gtmp = gtmp<65535.0f ? gamcurve[gtmp] : (Color::gamman((double)gtmp/65535.0, gam)*32768.0f); gtmp = gtmp<65535.0f ? gamcurve[gtmp] : (Color::gamman((double)gtmp/65535.0, gam)*32768.0f);
btmp = btmp<65535.0f ? gamcurve[btmp] : (Color::gamman((double)btmp/65535.0, gam)*32768.0f); btmp = btmp<65535.0f ? gamcurve[btmp] : (Color::gamman((double)btmp/65535.0, gam)*32768.0f);
float X,Y,Z; float X,Y,Z;
Color::rgbxyz(rtmp,gtmp,btmp,X,Y,Z,wp); Color::rgbxyz(rtmp,gtmp,btmp,X,Y,Z,wp);
//convert Lab //convert Lab
Color::XYZ2Lab(X, Y, Z, L, a, b); Color::XYZ2Lab(X, Y, Z, L, a, b);
labdn->L[i1][j1] = L; labdn->L[i1][j1] = L;
@@ -402,7 +404,7 @@ namespace rtengine {
// Ldetail[i1][j1] = 0; // Ldetail[i1][j1] = 0;
Lin[i1][j1] = L; Lin[i1][j1] = L;
// totwt[i1][j1] = 0; // totwt[i1][j1] = 0;
} }
} }
@@ -424,13 +426,13 @@ namespace rtengine {
float noisevarL = SQR((dnparams.luma/125.0f)*(1+ dnparams.luma/25.0f)); float noisevarL = SQR((dnparams.luma/125.0f)*(1+ dnparams.luma/25.0f));
float noisevarab = SQR(dnparams.chroma/10.0f); float noisevarab = SQR(dnparams.chroma/10.0f);
{ // enclosing this code in a block frees about 120 MB before allocating 20 MB after this block (measured with D700 NEF) { // enclosing this code in a block frees about 120 MB before allocating 20 MB after this block (measured with D700 NEF)
wavelet_decomposition* Ldecomp; wavelet_decomposition* Ldecomp;
wavelet_decomposition* adecomp; wavelet_decomposition* adecomp;
wavelet_decomposition* bdecomp; wavelet_decomposition* bdecomp;
int levwav=5; int levwav=5;
// if(xxxx) levwav=7; // if(xxxx) levwav=7;
Ldecomp = new wavelet_decomposition (labdn->data, labdn->W, labdn->H, levwav/*maxlevels*/, 0/*subsampling*/ ); Ldecomp = new wavelet_decomposition (labdn->data, labdn->W, labdn->H, levwav/*maxlevels*/, 0/*subsampling*/ );
@@ -608,10 +610,10 @@ namespace rtengine {
for (int i=tiletop; i<tilebottom; i++){ for (int i=tiletop; i<tilebottom; i++){
int i1 = i-tiletop; int i1 = i-tiletop;
float X,Y,Z,L,a,b; float X,Y,Z,L,a,b;
for (int j=tileleft; j<tileright; j++) { for (int j=tileleft; j<tileright; j++) {
int j1=j-tileleft; int j1=j-tileleft;
//modification Jacques feb 2013 //modification Jacques feb 2013
//true conversion Lab==>xyz //true conversion Lab==>xyz
L = labdn->L[i1][j1]; L = labdn->L[i1][j1];
a = labdn->a[i1][j1]; a = labdn->a[i1][j1];
@@ -628,8 +630,8 @@ namespace rtengine {
//readapt arbitrary gamma (inverse from beginning) //readapt arbitrary gamma (inverse from beginning)
r_ = Color::gammatab_26_11[r_]; r_ = Color::gammatab_26_11[r_];
g_ = Color::gammatab_26_11[g_]; g_ = Color::gammatab_26_11[g_];
b_ = Color::gammatab_26_11[b_]; b_ = Color::gammatab_26_11[b_];
float factor = Vmask[i1]*Hmask[j1]/gain; float factor = Vmask[i1]*Hmask[j1]/gain;
dsttmp->r(i,j) += factor*r_; dsttmp->r(i,j) += factor*r_;
@@ -662,7 +664,7 @@ namespace rtengine {
} }
} }
} }
} else { } else {
#ifdef _OPENMP #ifdef _OPENMP
@@ -673,7 +675,7 @@ namespace rtengine {
float X,Y,Z,L,a,b; float X,Y,Z,L,a,b;
for (int j=tileleft; j<tileright; j++) { for (int j=tileleft; j<tileright; j++) {
int j1=j-tileleft; int j1=j-tileleft;
//modification Jacques feb 2013 //modification Jacques feb 2013
L = labdn->L[i1][j1]; L = labdn->L[i1][j1];
a = labdn->a[i1][j1]; a = labdn->a[i1][j1];
b = labdn->b[i1][j1]; b = labdn->b[i1][j1];
@@ -686,7 +688,7 @@ namespace rtengine {
r_ = r_<32768.0f ? igamcurve[r_] : (Color::gamman((float)r_/32768.0f, igam) * 65535.0f); r_ = r_<32768.0f ? igamcurve[r_] : (Color::gamman((float)r_/32768.0f, igam) * 65535.0f);
g_ = g_<32768.0f ? igamcurve[g_] : (Color::gamman((float)g_/32768.0f, igam) * 65535.0f); g_ = g_<32768.0f ? igamcurve[g_] : (Color::gamman((float)g_/32768.0f, igam) * 65535.0f);
b_ = b_<32768.0f ? igamcurve[b_] : (Color::gamman((float)b_/32768.0f, igam) * 65535.0f); b_ = b_<32768.0f ? igamcurve[b_] : (Color::gamman((float)b_/32768.0f, igam) * 65535.0f);
dsttmp->r(i,j) += factor*r_; dsttmp->r(i,j) += factor*r_;
dsttmp->g(i,j) += factor*g_; dsttmp->g(i,j) += factor*g_;
dsttmp->b(i,j) += factor*b_; dsttmp->b(i,j) += factor*b_;
@@ -699,11 +701,11 @@ namespace rtengine {
delete labdn; delete labdn;
// delete noiseh; // delete noiseh;
delete[] Vmask; delete[] Vmask;
delete[] Hmask; delete[] Hmask;
}//end of tile row }//end of tile row
}//end of tile loop }//end of tile loop
@@ -752,9 +754,10 @@ namespace rtengine {
int blkstart = hblproc*TS*TS; int blkstart = hblproc*TS*TS;
boxabsblur(fLblox+blkstart, nbrwt, 3, 3, TS, TS);//blur neighbor weights for more robust estimation //for DCT boxabsblur(fLblox+blkstart, nbrwt, 3, 3, TS, TS);//blur neighbor weights for more robust estimation //for DCT
#pragma omp parallel for #pragma omp parallel for
for (int n=0; n<TS*TS; n++) { //for DCT for (int n=0; n<TS*TS; n++) { //for DCT
fLblox[blkstart+n] *= (1-expf(-SQR(nbrwt[n])/noisevar_Ldetail)); fLblox[blkstart+n] *= (1-xexpf(-SQR(nbrwt[n])/noisevar_Ldetail));
}//output neighbor averaged result }//output neighbor averaged result
delete[] nbrwt; delete[] nbrwt;
@@ -899,7 +902,7 @@ namespace rtengine {
// skip_L, skip_ab, skip_h, noisevar_L, noisevar_ab, NULL, NULL);//TODO: this implies redundant evaluation of MAD // skip_L, skip_ab, skip_h, noisevar_L, noisevar_ab, NULL, NULL);//TODO: this implies redundant evaluation of MAD
ShrinkAll(WavCoeffs_L, WavCoeffs_a, WavCoeffs_b, lvl, Wlvl_L, Hlvl_L, Wlvl_ab, Hlvl_ab, ShrinkAll(WavCoeffs_L, WavCoeffs_a, WavCoeffs_b, lvl, Wlvl_L, Hlvl_L, Wlvl_ab, Hlvl_ab,
skip_L, skip_ab, noisevar_L, noisevar_ab, NULL);//TODO: this implies redundant evaluation of MAD skip_L, skip_ab, noisevar_L, noisevar_ab, NULL);//TODO: this implies redundant evaluation of MAD
} else { } else {
float ** WavPars_L = WaveletCoeffs_L.level_coeffs(lvl+1); float ** WavPars_L = WaveletCoeffs_L.level_coeffs(lvl+1);
@@ -953,8 +956,8 @@ namespace rtengine {
//float satfactor_a = mad_a/(mad_a+0.5*SQR(WavCoeffs_a[0][coeffloc_ab])); //float satfactor_a = mad_a/(mad_a+0.5*SQR(WavCoeffs_a[0][coeffloc_ab]));
//float satfactor_b = mad_b/(mad_b+0.5*SQR(WavCoeffs_b[0][coeffloc_ab])); //float satfactor_b = mad_b/(mad_b+0.5*SQR(WavCoeffs_b[0][coeffloc_ab]));
WavCoeffs_a[dir][coeffloc_ab] *= SQR(1-exp(-(mag_a/mad_a)-(mag_L/(9*mad_L)))/*satfactor_a*/); WavCoeffs_a[dir][coeffloc_ab] *= SQR(1-xexpf(-(mag_a/mad_a)-(mag_L/(9*mad_L)))/*satfactor_a*/);
WavCoeffs_b[dir][coeffloc_ab] *= SQR(1-exp(-(mag_b/mad_b)-(mag_L/(9*mad_L)))/*satfactor_b*/); WavCoeffs_b[dir][coeffloc_ab] *= SQR(1-xexpf(-(mag_b/mad_b)-(mag_L/(9*mad_L)))/*satfactor_b*/);
} }
}//now chrominance coefficients are denoised }//now chrominance coefficients are denoised
@@ -972,7 +975,7 @@ namespace rtengine {
float mag_L = SQR(WavCoeffs_L[dir][coeffloc_L]); float mag_L = SQR(WavCoeffs_L[dir][coeffloc_L]);
//float mag_Lpar = SQR(parfrac*WavPars_L[dir][coeffloc_Lpar]); //float mag_Lpar = SQR(parfrac*WavPars_L[dir][coeffloc_Lpar]);
//float sf_L = SQR(1-expf(-(mag_L/mad_L)-(mag_Lpar/mad_L))); //float sf_L = SQR(1-expf(-(mag_L/mad_L)-(mag_Lpar/mad_L)));
float sf_L = mag_L/(mag_L+mad_L*exp(-mag_L/(9*mad_L))+eps); float sf_L = mag_L/(mag_L+mad_L*xexpf(-mag_L/(9*mad_L))+eps);
sfave[coeffloc_L] = sf_L; sfave[coeffloc_L] = sf_L;
@@ -995,7 +998,7 @@ namespace rtengine {
float edgefactor = 1;//expf(-SQR(edge[i][j])/mad_L); float edgefactor = 1;//expf(-SQR(edge[i][j])/mad_L);
float sf_L = mag_L/(mag_L + edgefactor*mad_L*exp(-mag_L/(9*mad_L))+eps); float sf_L = mag_L/(mag_L + edgefactor*mad_L*xexpf(-mag_L/(9*mad_L))+eps);
//use smoothed shrinkage unless local shrinkage is much less //use smoothed shrinkage unless local shrinkage is much less
WavCoeffs_L[dir][coeffloc_L] *= (SQR(edgefactor*sfave[coeffloc_L])+SQR(sf_L))/(edgefactor*sfave[coeffloc_L]+sf_L+eps); WavCoeffs_L[dir][coeffloc_L] *= (SQR(edgefactor*sfave[coeffloc_L])+SQR(sf_L))/(edgefactor*sfave[coeffloc_L]+sf_L+eps);
@@ -1017,7 +1020,7 @@ namespace rtengine {
void ImProcFunctions::WaveletDenoiseAll(wavelet_decomposition &WaveletCoeffs_L, wavelet_decomposition &WaveletCoeffs_a, void ImProcFunctions::WaveletDenoiseAll(wavelet_decomposition &WaveletCoeffs_L, wavelet_decomposition &WaveletCoeffs_a,
wavelet_decomposition &WaveletCoeffs_b, float noisevar_L, float noisevar_ab, LabImage * noi)//mod JD wavelet_decomposition &WaveletCoeffs_b, float noisevar_L, float noisevar_ab, LabImage * noi)//mod JD
{ {
int maxlvl = WaveletCoeffs_L.maxlevel(); int maxlvl = WaveletCoeffs_L.maxlevel();
// printf("maxlevel = %d\n",maxlvl); // printf("maxlevel = %d\n",maxlvl);
@@ -1033,19 +1036,19 @@ namespace rtengine {
int Wlvl_ab = WaveletCoeffs_a.level_W(lvl); int Wlvl_ab = WaveletCoeffs_a.level_W(lvl);
int Hlvl_ab = WaveletCoeffs_a.level_H(lvl); int Hlvl_ab = WaveletCoeffs_a.level_H(lvl);
float skip_L = WaveletCoeffs_L.level_stride(lvl); float skip_L = WaveletCoeffs_L.level_stride(lvl);
float skip_ab = WaveletCoeffs_a.level_stride(lvl); float skip_ab = WaveletCoeffs_a.level_stride(lvl);
float ** WavCoeffs_L = WaveletCoeffs_L.level_coeffs(lvl); float ** WavCoeffs_L = WaveletCoeffs_L.level_coeffs(lvl);
float ** WavCoeffs_a = WaveletCoeffs_a.level_coeffs(lvl); float ** WavCoeffs_a = WaveletCoeffs_a.level_coeffs(lvl);
float ** WavCoeffs_b = WaveletCoeffs_b.level_coeffs(lvl); float ** WavCoeffs_b = WaveletCoeffs_b.level_coeffs(lvl);
// printf("Hab : %d\n", Hlvl_ab); // printf("Hab : %d\n", Hlvl_ab);
// printf("Wab : %d\n", Wlvl_ab); // printf("Wab : %d\n", Wlvl_ab);
ShrinkAll(WavCoeffs_L, WavCoeffs_a, WavCoeffs_b, lvl, Wlvl_L, Hlvl_L, Wlvl_ab, Hlvl_ab, ShrinkAll(WavCoeffs_L, WavCoeffs_a, WavCoeffs_b, lvl, Wlvl_L, Hlvl_L, Wlvl_ab, Hlvl_ab,
skip_L, skip_ab, noisevar_L, noisevar_ab, noi); skip_L, skip_ab, noisevar_L, noisevar_ab, noi);
} }
//omp_set_nested(false); //omp_set_nested(false);
} }
@@ -1093,8 +1096,8 @@ namespace rtengine {
m_b=mad_b; m_b=mad_b;
int coeffloc_ab = i*W_ab+j; int coeffloc_ab = i*W_ab+j;
int coeffloc_L = ((i*skip_L)/skip_ab)*W_L + ((j*skip_L)/skip_ab); int coeffloc_L = ((i*skip_L)/skip_ab)*W_L + ((j*skip_L)/skip_ab);
//modification Jacques feb 2013 //modification Jacques feb 2013
float reduc=1.f; float reduc=1.f;
float bluuc=1.f; float bluuc=1.f;
if(noisered!=0. || noiseblue !=0.) { if(noisered!=0. || noiseblue !=0.) {
@@ -1102,17 +1105,17 @@ namespace rtengine {
//one can also use L or c (chromaticity) if necessary //one can also use L or c (chromaticity) if necessary
if(hh > -0.4f && hh < 1.6f) reduc=noisered;//red from purple to next yellow if(hh > -0.4f && hh < 1.6f) reduc=noisered;//red from purple to next yellow
if(hh>-2.45f && hh <=-0.4f) bluuc=noiseblue;//blue if(hh>-2.45f && hh <=-0.4f) bluuc=noiseblue;//blue
} }
mad_a*=reduc; mad_a*=reduc;
mad_a*=bluuc; mad_a*=bluuc;
mad_b*=reduc; mad_b*=reduc;
mad_b*=bluuc; mad_b*=bluuc;
float mag_L = SQR(WavCoeffs_L[dir][coeffloc_L ])+eps; float mag_L = SQR(WavCoeffs_L[dir][coeffloc_L ])+eps;
float mag_a = SQR(WavCoeffs_a[dir][coeffloc_ab])+eps; float mag_a = SQR(WavCoeffs_a[dir][coeffloc_ab])+eps;
float mag_b = SQR(WavCoeffs_b[dir][coeffloc_ab])+eps; float mag_b = SQR(WavCoeffs_b[dir][coeffloc_ab])+eps;
sfavea[coeffloc_ab] = (1-exp(-(mag_a/mad_a)-(mag_L/(9*madL)))); sfavea[coeffloc_ab] = (1-xexpf(-(mag_a/mad_a)-(mag_L/(9*madL))));
sfaveb[coeffloc_ab] = (1-exp(-(mag_b/mad_b)-(mag_L/(9*madL)))); sfaveb[coeffloc_ab] = (1-xexpf(-(mag_b/mad_b)-(mag_L/(9*madL))));
mad_a=m_a; mad_a=m_a;
mad_b=m_b; mad_b=m_b;
// 'firm' threshold of chroma coefficients // 'firm' threshold of chroma coefficients
@@ -1137,26 +1140,26 @@ namespace rtengine {
int coeffloc_ab = i*W_ab+j; int coeffloc_ab = i*W_ab+j;
int coeffloc_L = ((i*skip_L)/skip_ab)*W_L + ((j*skip_L)/skip_ab); int coeffloc_L = ((i*skip_L)/skip_ab)*W_L + ((j*skip_L)/skip_ab);
//modification Jacques feb 2013 //modification Jacques feb 2013
float reduc=1.f; float reduc=1.f;
float bluuc=1.f; float bluuc=1.f;
if(noisered!=0. || noiseblue !=0.) { if(noisered!=0. || noiseblue !=0.) {
float hh=atan2(noi->b[2*i][2*j],noi->a[2*i][2*j]); float hh=atan2(noi->b[2*i][2*j],noi->a[2*i][2*j]);
if(hh > -0.4f && hh < 1.6f) reduc=noisered; if(hh > -0.4f && hh < 1.6f) reduc=noisered;
if(hh>-2.45f && hh <=-0.4f) bluuc=noiseblue; if(hh>-2.45f && hh <=-0.4f) bluuc=noiseblue;
} }
mad_a*=reduc; mad_a*=reduc;
mad_a*=bluuc; mad_a*=bluuc;
mad_b*=reduc; mad_b*=reduc;
mad_b*=bluuc; mad_b*=bluuc;
float mag_L = SQR(WavCoeffs_L[dir][coeffloc_L ])+eps; float mag_L = SQR(WavCoeffs_L[dir][coeffloc_L ])+eps;
float mag_a = SQR(WavCoeffs_a[dir][coeffloc_ab])+eps; float mag_a = SQR(WavCoeffs_a[dir][coeffloc_ab])+eps;
float mag_b = SQR(WavCoeffs_b[dir][coeffloc_ab])+eps; float mag_b = SQR(WavCoeffs_b[dir][coeffloc_ab])+eps;
float sfa = (1-exp(-(mag_a/mad_a)-(mag_L/(9*madL)))); float sfa = (1-xexpf(-(mag_a/mad_a)-(mag_L/(9*madL))));
float sfb = (1-exp(-(mag_b/mad_b)-(mag_L/(9*madL)))); float sfb = (1-xexpf(-(mag_b/mad_b)-(mag_L/(9*madL))));
//use smoothed shrinkage unless local shrinkage is much less //use smoothed shrinkage unless local shrinkage is much less
WavCoeffs_a[dir][coeffloc_ab] *= (SQR(sfavea[coeffloc_ab])+SQR(sfa))/(sfavea[coeffloc_ab]+sfa+eps); WavCoeffs_a[dir][coeffloc_ab] *= (SQR(sfavea[coeffloc_ab])+SQR(sfa))/(sfavea[coeffloc_ab]+sfa+eps);
@@ -1175,7 +1178,7 @@ namespace rtengine {
for (int i=0; i<W_L*H_L; i++) { for (int i=0; i<W_L*H_L; i++) {
float mag = SQR(WavCoeffs_L[dir][i]); float mag = SQR(WavCoeffs_L[dir][i]);
float shrinkfactor = mag/(mag+mad_L*exp(-mag/(9*mad_L))+eps); float shrinkfactor = mag/(mag+mad_L*xexpf(-mag/(9*mad_L))+eps);
//WavCoeffs_L[dir][i] *= shrinkfactor; //WavCoeffs_L[dir][i] *= shrinkfactor;
sfave[i] = shrinkfactor; sfave[i] = shrinkfactor;
@@ -1189,7 +1192,7 @@ namespace rtengine {
float mag = SQR(WavCoeffs_L[dir][i]); float mag = SQR(WavCoeffs_L[dir][i]);
float sf = mag/(mag+mad_L*exp(-mag/(9*mad_L))+eps); float sf = mag/(mag+mad_L*xexpf(-mag/(9*mad_L))+eps);
//use smoothed shrinkage unless local shrinkage is much less //use smoothed shrinkage unless local shrinkage is much less
WavCoeffs_L[dir][i] *= (SQR(sfave[i])+SQR(sf))/(sfave[i]+sf+eps); WavCoeffs_L[dir][i] *= (SQR(sfave[i])+SQR(sf))/(sfave[i]+sf+eps);