dcraw_ppm_tiff_writer() dcraw_ppm_tiff_writer() applies gamma curve on write (imgdata.image[] is linear, while output is usually not). To set gamma curve to linear use imgdata.params.gamm[0] = imgdata.params.gamm[1] = 1.0; -- Alex Tutubalin @LibRaw LLC reply
dcraw_ppm_tiff_writer() applies gamma curve on write (imgdata.image[] is linear, while output is usually not).
To set gamma curve to linear use
imgdata.params.gamm[0] = imgdata.params.gamm[1] = 1.0;