Now let’s look at ProPhotoRGB conversion errors with 15-bit quantization. I took all 16+ million colors in sRGB and converted them to PPRGB and back, quantizing to 15-bits per color plane after each conversion. The conversions themselves were performed algorithmically (no tables involved) with double precision floating point, and have errors on the order of… [Read More]
Archives for October 7, 2014
Color space conversion errors with ProPhoto RGB — 8 bits
ProPhoto RGB is not recommended as an 8-bit color space, but I thought I’d start there. I took all 16+ million colors in sRGB and converted them to PPRGB and back, quantizing to 8-bits per color plane after each conversion. The conversions themselves were performed algorithmically (no tables involved) with double precision floating point, and… [Read More]