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CIECAM produces black splotches in overexposed areas, Issue 2187, double precision

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2014-01-12 12:02:58 +01:00
parent 3ff62b185f
commit 9a55a2c0fa
1 changed files with 13 additions and 2 deletions
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15
rtengine/improcfun.cc
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@@ -522,6 +522,8 @@ if(params->colorappearance.enabled) {
// we cannot have all algoritms with all chroma curves
if(alg==1) {
// Lightness saturation
if(Jpro > 99.9f)
Jpro = 99.9f;
Jpro=(CAMBrightCurveJ[(float)(Jpro*327.68)])/327.68;//ligthness CIECAM02 + contrast
double sres;
double Sp=spro/100.0;
@@ -542,7 +544,12 @@ if(params->colorappearance.enabled) {
}
else if(alg==3 || alg==0 || alg==2) {
double coef=32760./wh;
if(alg==3 || alg==2) Qpro=(CAMBrightCurveQ[(float)(Qpro*coef)])/coef;//brightness and contrast
if(alg==3 || alg==2) {
if(Qpro*coef > 32767.0f)
Qpro=(CAMBrightCurveQ[(float)32767.0f])/coef;//brightness and contrast
else
Qpro=(CAMBrightCurveQ[(float)(Qpro*coef)])/coef;//brightness and contrast
}
double Mp, sres;
double coe=pow(fl,0.25);
Mp=Mpro/100.0;
@@ -560,7 +567,11 @@ if(params->colorappearance.enabled) {
Jpro=(100.0* Qpro*Qpro) /(wh*wh);
Cpro= Mpro/coe;
spro = 100.0 * sqrt( Mpro / Qpro );
if(alg!=2) Jpro=(CAMBrightCurveJ[(float)(Jpro*327.68)])/327.68;//ligthness CIECAM02 + contrast
if(alg!=2) {
if(Jpro > 99.9f)
Jpro = 99.9f;
Jpro=(CAMBrightCurveJ[(float)(Jpro*327.68f)])/327.68f;//ligthness CIECAM02 + contrast
}
double Cp;
double Sp=spro/100.0;
parsat=1.5;