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pass the correct rgb->gray coefficients to PNG decoder, to match cvtColor's.

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This commit is contained in:
Vadim Pisarevsky
2010-11-24 19:50:52 +00:00
parent d6686240d5
commit beee6f2f70
1 changed files with 1 additions and 1 deletions
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modules/highgui/src/grfmt_png.cpp
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@@ -230,7 +230,7 @@ bool PngDecoder::readData( Mat& img )
else if( color )
png_set_gray_to_rgb( png_ptr ); // Gray->RGB
else
png_set_rgb_to_gray( png_ptr, 1, -1, -1 ); // RGB->Gray
png_set_rgb_to_gray( png_ptr, 1, 0.299, 0.587 ); // RGB->Gray
png_read_update_info( png_ptr, info_ptr );