Comment on Beyond RGB: A new image file format efficiently stores invisible light data
zerofk@lemm.ee 3 weeks agoKind of, but JPEG converts image data to its own internal 3 came channel colour space before applying DCT. It is not compressing the R, G and B channels of most images. So a multichannel compression is not just compressing each channel separately.
AbouBenAdhem@lemmy.world 3 weeks ago
Yeah, jpeg converts to lab (or something similar, I think). But the dimensions are the same: one channel for lightness, and then a number of channels one less than the total number of sampled frequencies to capture the rest of the color space.