And reminds me also of the "masking" technique used on (regular?) JPEGs, based upon keyword-hash shuffling/deshuffling of selected 8x8-pixel DCT units of a JPEG image (and of the hues apllied to the curves) to reversibly censor images, IIRC driven largely by Japanese censorship rules. ...
it's gone for good. That means JPG is also a lossy compression. But note how much we can compress the original photo and still recognize what it is. Even with 95% compression, we can still make out that this is a photo of an iPod. With 50...
, a 16-bpc layered TIFF or Photoshop file is like processed film, and a JPEG/PNG/GIF file is like a photo print (least amount of editing possible because the least amount of original image info remains). Votes Upvote Translate Translate Report Report Reply...