>a very powerful compression scheme, it's perhaps possible. The compression used is .jpg or .jp2 (jpeg-2000)
For reasonybly sized pictures 10kb is minimum, 20kb is average size. The quality does deteriorate rapidly below 20kb/picture. The drm-modem (qam-16 mode b) has a raw troughput of 3600bps, 2400bps FEC'd. Means 66 sec for a 20kb picture. A 500hz wide FDM modem of 500hz BW would have 600bps raw, 400bps FEC'd, Means 6 minutes for a 20kb picture. I think this is not practical. btw you can test the quality/size tradeoff with irfanview.
