24 Apr
2003
24 Apr
'03
5:25 a.m.
Andrew J Bromage wrote:
On Thu, Apr 24, 2003 at 08:21:59AM +0200, Ketil Z. Malde wrote:
It handles binary data, surely?
Not in the same sense that Deflate does. An arbitrary binary stream is not, in general, JPEG-compressible. You at least need a width & height as metadata, plus a number of 3-byte triples equal to width*height.
Not to mention that it assumes those triples represent a two-dimensional field of RGB colour values - the algorithm performs a colour transformation first (into YUV), then a 2D spatial transform. Arbitrary binary data will cause the algorithm to behave arbitrarily badly when it tries this! You'll just get noise out the other end. --KW 8-)