> > For example, perhaps the low frequency images show less > > variability than the higher frequency images, and can > > more easily be predicted or interpolated, or in any > > event don't need to be transmitted as often as the > > higher frequency components of the frame. > > > > So an efficient moving image algorithm which uses > > the DWT as its basis can be created. One which does not > > simply repeat the entire DWT every single time. Craig Birkmaier wrote: > Go for it Bert... No need. It's apparently been done. I browsed around some until I found something that describes what appeared to be the "natural" approach for video with wavelets. Not saying it is more efficient than MPEG or H.264, when taking human visual perception into account. I haven't seen that comparison. This article was written way back in 1994. The part that addresses video start here: http://citeseer.ist.psu.edu/cachedpage/59066/14 I also saw other references to block-based motion compensation using the wavelet transform, but that seemed aesthetically objectionable to me, from a math standpoint. The particular article was scanned, so it's not easy to cut and paste excerpts. 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.