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dehaze: fix bug in luminance mode, #5456

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This commit is contained in:
Ingo Weyrich 2019-09-22 13:21:34 +02:00
parent 7726911f7a
commit cab84aed38
1 changed files with 6 additions and 8 deletions
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14
rtengine/ipdehaze.cc
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@ -283,7 +283,7 @@ BENCHFUN
const float teps = 1e-3f;
const bool luminance = params->dehaze.luminance;
TMatrix ws = ICCStore::getInstance()->workingSpaceMatrix(params->icm.workingProfile);
const TMatrix ws = ICCStore::getInstance()->workingSpaceMatrix(params->icm.workingProfile);
#ifdef __SSE2__
const vfloat wsv[3] = {F2V(ws[1][0]), F2V(ws[1][1]),F2V(ws[1][2])};
#endif
@ -342,13 +342,11 @@ BENCHFUN
img->r(y, x) = img->g(y, x) = img->b(y, x) = LIM01(1.f - mt) * 65535.f;
} else if (luminance) {
const float Y = Color::rgbLuminance(img->r(y, x), img->g(y, x), img->b(y, x), ws);
if (Y > 1e-5f) {
const float YY = (Y - ambientY) / mt + ambientY;
const float f = 65535.f * YY / Y;
img->r(y, x) *= f;
img->g(y, x) *= f;
img->b(y, x) *= f;
}
const float YY = (Y - ambientY) / mt + ambientY;
const float f = Y > 1e-5f ? 65535.f * YY / Y : 65535.f;
img->r(y, x) *= f;
img->g(y, x) *= f;
img->b(y, x) *= f;
} else {
img->r(y, x) = ((r - ambient[0]) / mt + ambient[0]) * 65535.f;
img->g(y, x) = ((g - ambient[1]) / mt + ambient[1]) * 65535.f;