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Hald CLUT files in png format are opened with wrong gamma, Issue 2720

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2015-03-23 14:28:34 +01:00
parent bf5aecab31
commit b971c031f0
1 changed files with 6 additions and 6 deletions
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4
rtengine/imageio.cc
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@@ -289,9 +289,9 @@ int ImageIO::loadPNG (Glib::ustring fname) {
//setting gamma //setting gamma
double gamma; double gamma;
if (png_get_gAMA(png,info,&gamma)) if (png_get_gAMA(png,info,&gamma))
png_set_gamma(png, 2.0, gamma); png_set_gamma(png, 1.0/gamma, gamma); // use gamma from metadata
else else
png_set_gamma(png,2.0, 0.45455); png_set_gamma(png, 2.2, 1.0/2.2); // no gamma in metadata, suppose gamma 2.2
// if (bps==8 && bit_depth==16) png_set_strip_16(png); // if (bps==8 && bit_depth==16) png_set_strip_16(png);