Hi all,
If you ever need a demonstration of the cumulative effects of multiple,
non-bit-for-bit compression/decompression cycles on an image, the video
below is really something. The artifacts are from 1,000 passes through
whatever codec YouTube uses, rather than still-image lossy algorithms;
but the same conceptual point remains, and might be useful as a tiny
piece of a case somewhere for having sufficient storage infrastructure
("why not just archive [lossy-compressed] JPEGs on a smaller array?").
And it's a pretty amazing 38 seconds, besides.
<http://www.youtube.com/watch?v=8qKz5YW5J-U>
There's more at <http://mashable.com/2010/06/03/youtube-i-am-sitting>.
cheers,
Rob
--
Rob Lancefield, Ph.D.
Manager of Museum Information Services / Registrar of Collections
Davison Art Center, Wesleyan University
301 High Street, Middletown CT 06459-0487 USA
rlancefield [at] wesleyan [dot] edu | tel. 860.685.2965
Past President, Museum Computer Network (MCN), http://www.mcn.edu
