June 28, 2007: Trash shadow

[Flint]

Originally Posted by spudcon

Seagulls, shadows, or whatever, we're all fortunate to be viewing this away from the stink of 6 month old garbage.

I'd say this is definitely a case of someone suffering for their art!

Originally Posted by LabRat

Wow, do you or he have any close vs. far pics of that? I would love to see how that turned out!

I don't have any pics; but as soon as I get a chance (whenever I go to my friend's house next) I will take some from the normal standing-next-to-the-wall-looking-at-a-painting range, and then from the distance-that-the-image-starts-to-make-sense range.

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So, I sketched up some diagrams...
..the first two involving casting shadows on 2-D and then 3-D surfaces, while the 3-D surfaces retain their information...
..the third involving projected, visible light images, reproduced on 3-D surfaces, so that different images become visible depending on the angle: