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Bugfix for application of exposure controls in blown highlights.

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This commit is contained in:
Emil Martinec
2011-04-09 08:22:45 -05:00
parent e972e992ba
commit 04b4745718
6 changed files with 34 additions and 11 deletions
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12
rtengine/curves.h
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@@ -191,6 +191,18 @@ class CurveFactory {
//static inline float gamma_srgb (double x) { return gammatab_srgb[x]; }
//static inline float gamma (double x) { return gammatab[x]; }
//static inline float igamma_srgb (double x) { return igammatab_srgb[x]; }
static inline float hlcurve (const float exp_scale, const float comp, const float hlrange, float level)
{
if (comp>0.0) {
float val = level+(hlrange-65536.0);
float Y = val*exp_scale/hlrange;
float R = hlrange/(val*comp);
return log(1.0+Y*comp)*R;
} else {
return exp_scale;
}
}
public:
static void complexCurve (double ecomp, double black, double hlcompr, double hlcomprthresh, double shcompr, double br, double contr, double gamma_, bool igamma_, const std::vector<double>& curvePoints, LUTu & histogram,LUTf & hlCurve, LUTf & shCurve,LUTf & outCurve, LUTu & outBeforeCCurveHistogram, int skip=1);