Craig Birkmaier wrote: > The wavelets are coming...the wavelets are coming... That would be interesting. And would show how these standards are likely to keep following one another, urging people to continuously wonder "why don't we leapfrog [insert your choice of technique to leapfrog], and migrate straight to [insert your pet compression scheme]." For example, even before low cost H.264 encoders and decoders are widely available, why don't we wait for MPEG-wavelet. But the article is a bit hyped up for my taste. For one thing, this business: "JPEG2000 compresses each frame independently, so that transmission errors affect only a single frame, and do not propagate through subsequent images. Because there is no inter-frame processing, end-to-end latency is very low." What they say is true for M-JPEG as well. Big deal. I'd like to see a compression efficiency comparison between this, call it, M-JPEG2000 and MPEG-2 or H.264. And, of course, as soon as a JPEG2000-based scheme is modified for efficient moving image compression, just as JPEG was modified into MPEG-2 last time around, or the evolutionary H.264, that quote will no longer apply. Here's a good introduction into the topic. Start with the history, then just work through the subsequent sections. http://www.amara.com/IEEEwave/IW_history.html This seems like a truly different approach from MPEG/JPEG, as opposed to the much more evolutionary nature of H.264. To me, discrete Fourier, discrete Cosine, and discrete integer transforms are just variations of the same theme. > For those of us with experience in these matters, you > could see another transformation in the works. With the > commercialization of JPEG-2000 chips, it would only be a > matter of time before wavelets started to invade the turf > of MPEG and the world of non-linear editing. Those of us with experience know that the IP holders of H.264 will first want to get their investment back, before relinquishing this potentially lucrative market to newcomers, eh? But a compression effiency comparison would be nice. Bert ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.