Monday, October 31, 2005

image compression of the world

world.200403.3x21600x21600.C1.png (from Blue Marble next generation)

png originally 421780395, bz2 (pbzip2 4 processors, 15 minutes) 444013308, gzip 694902705, gzip -9 694799826, ppm 1399680019.

jpeg2000 (jj2000 5.1) upper and lower halves (runs out of memory otherwise) 153678085 + 171914391 = 325592476

world.200403.C1

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