rg@msel.unh.edu (Roger Gonzalez) (03/19/91)
I need to get some pointers toward the state-of-the-art in image compression for transmission over extremely low bandwidth links. What are the research areas? What techniques have proven the best? On video end: 68020 VME board with coproinker, Datacube Digimax and ROIstore can digitize up to 512x512x8 bits grayscale. Transmission methods: RF and underwater acoustic modems Receiving end: 80[2-4]86 with Super VGA The MAPS technique has been previously applied here at the lab, but this only allowed 90x90x4 pixels over a 9600 baud link at a SSTV rate. Since 9600 is a little unrealistic at present, and I will need to do a working demo of a underwater robot transmitting images back to base, and s-o-t-a for underwater acoustics is sub-1200 baud, I need a better technique. How good are differential techniques? Can differential techniques be combined with compression? I really could use some tips.. I have no lack for enthusiasm or interest, but my background in image processing is lacking and I don't want to redo any false trails... Thanks, Roger -- "The question of whether a computer can think is no more interesting than the question of whether a submarine can swim" - Edsgar W. Dijkstra rg@[msel|unhd].unh.edu | UNH Marine Systems Engineering Laboratory r_gonzalez@unhh.bitnet | Durham, NH 03824-3525