stylistic:style_transfer, information:filtering
RGB model and luminance–chrominance formats relationship

All luminance –chrominance formats used in the different TV and video standards such as YIQ for NTSC, YUV for PAL, YD D for SECAM, and YP P for component video use color difference signals, by which RGB color images can be encoded for broadcasting/recording and later decoded into RGB again to display them. These intermediate formats were needed for compatibility with pre-existent black-and-white TV formats. Also, those color difference signals need lower data bandwidth compared to full RGB signals.

Similarly, current high-efficiency digital color image data compression schemes such as JPEG and MPEG store RGB color internally in YC C format, a digital luminance–chrominance format based on YP P. The use of YC C also allows computers to perform lossy subsampling with the chrominance channels (typically to 4:2:2 or 4:1:1 ratios), which reduces the resultant file size.