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Bug in gamma calculation

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This commit is contained in:
Desmis 2015-10-03 09:06:10 +02:00
parent aa42f7394c
commit 058f5b8f98
2 changed files with 4 additions and 4 deletions
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6
rtengine/color.h
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@ -954,7 +954,7 @@ public:
*/
static inline double gamma13_2 (double x)
{
return x <= 0.016613 ? x * 2.0 : 1.009968 * exp(log(x) / 1.3) - 0.016613;
return x <= 0.016613 ? x * 2.0 : 1.009968 * exp(log(x) / 1.3) - 0.009968;
}
static inline double igamma13_2 (double x)
@ -964,7 +964,7 @@ public:
static inline double gamma115_2 (double x)
{
return x <= 0.001692 ? x * 2.0 : 1.000508 * exp(log(x) / 1.15) - 0.001692;
return x <= 0.001692 ? x * 2.0 : 1.000508 * exp(log(x) / 1.15) - 0.000508;
}
static inline double igamma115_2 (double x)
@ -974,7 +974,7 @@ public:
static inline double gamma145_3 (double x)
{
return x <= 0.009115 ? x * 3.0 : 1.012305 * exp(log(x) / 1.45) - 0.009115;
return x <= 0.009115 ? x * 3.0 : 1.012305 * exp(log(x) / 1.45) - 0.012305;
}
static inline double igamma145_3 (double x)

2
rtengine/rawimagesource.cc
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@ -1834,7 +1834,7 @@ void RawImageSource::retinexPrepareBuffers(ColorManagementParams cmp, RetinexPar
for (int i = 0; i < 65536; i++) {
double val = (i) / 65535.;
double start = g_a3;
double add = g_a3;
double add = g_a4;
double mul = 1. + g_a4;
double x;
x = Color::gammareti (val, gamm, start, ts, mul , add);