(no subject)

Jan 11, 2005 21:31

Today at work I accidentally created some jpg glitch images by formatting running data through perl web get script and outputing it incorrectly. The results are classy in a crunchy level 2 hyper mode underwater style. It even starts to tell a story about the format (JPEG compression) that is used to compact many of our image files. As shown below, the image is broken up into 8x8 squares of color, within each square the image is composed of a variable number of DCT (Discrete Cosine Transform) coefficients, they represent the shapes and color in a way that degrades nicely (more compression means dropping the lower ones). The funny little fuzzy soft patterns dance in technicolor. I'm guessing maybe I wiped out the higher order bits, because it looks like the course but not fine detail of each square is present. Anyway, this is what computer barf looks like:


























See the whole set of images here.

glitch, pictures

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