On 07/17/2014 02:43 PM, FRIGN wrote: > > I love this approach! Instead of trying to compress the image in the > format itself (like PNG), we just leave it to the compressor to > determine certain similarities and patterns. > I suppose LZMA will give even better results. >
I'm thinking back to my DSP class and trying to remember why time domain storage like this isn't in favor with most of the image formats. I guess TD storage limits you to lossless compression (you can lossy-ly compress frequency domain data and the brain is apparently more forgiving of the artifacts. Or so they say). And now that I think of it, this is roughly the image equivalent of PCM audio, isn't it? (Except that PCM has a more complex header, and the channels are stored sequentially rather than interleaved.) Now that I say that, I wonder if serial storage of the color channels would compress better, since you'll generally have low-frequency content for most of the channels most of the time. On that note, I'm now curious how this format would handle line noise/steganography. I'll report back if I find anything interesting on either question. Weldon
