Chroma Subsampling is a form of what?

Chroma Subsampling is a technique primarily used in data compression, particularly in video and image compression formats. The core idea behind chroma subsampling is that the human eye is more sensitive to changes in brightness (luminance) than to changes in color (chrominance). By reducing the resolution of the color information while maintaining the full resolution of the brightness information, chroma subsampling effectively decreases the amount of data required to represent an image or video.

This reduction in data allows for smaller file sizes and lower bandwidth usage when transmitting video over networks or storing images and videos on devices. Thus, chroma subsampling is an important part of the overall compression process, enabling more efficient encoding and better use of storage space without significantly degrading visual quality.