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Funny
(18 posts) (13 voices)-
Posted 6 months ago #
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:-)
Posted 6 months ago # -
Reminds me of a fun image compression project that I did in college. I made an algorithm recursively bisected an image replacing blocks with solid colors if all the pixels were within a certain threshold. I've been meaning to see if an animated version of it would look interesting as an effect in a game. I guess it would look something like that.
Lena compressed to slightly less than 1 bit per pixel:
Posted 6 months ago # -
Oh come one, put the full image!! XD
Posted 6 months ago # -
Blame technology:
Alexander Sawchuk estimates that it was in June or July of 1973 when he, then an assistant professor of electrical engineering at the University of Southern California Signal and Image Processing Institute (SIPI), along with a graduate student and the SIPI lab manager, was hurriedly searching the lab for a good image to scan for a colleague's conference paper. They got tired of their stock of usual test images, dull stuff dating back to television standards work in the early 1960s. They wanted something glossy to ensure good output dynamic range, and they wanted a human face. Just then, somebody happened to walk in with a recent issue of Playboy.
The engineers tore away the top third of the centerfold so they could wrap it around the drum of their Muirhead wirephoto scanner, which they had outfitted with analog-to-digital converters (one each for the red, green, and blue channels) and a Hewlett Packard 2100 minicomputer. The Muirhead had a fixed resolution of 100 lines per inch and the engineers wanted a 512×512 image, so they limited the scan to the top 5.12 inches of the picture, effectively cropping it at the subject's shoulders.This scan, nonetheless, became one of the most used images in computer history, so much that the mysterious Lenna came to be dubbed the "First Lady of the Internet".
Besides, I only had 1 bit per pixel! That's all the more I could fit in 32KiB.
Posted 6 months ago # -
I truly think the person who made the software behind the logo thingy deserves a Phd in awesomeness ;)
Posted 6 months ago # -
@michaelm Heh. Didn't mean to hijack the thread. More information and source code here:
http://wiki.slembcke.net/main/published/Lossy+Image+BisectionJPEG can easily average 1bpp at a *much* higher quality. ;)
Posted 6 months ago #
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