Droste effect
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Search complete. 1 mention across 1 episode found for "Droste effect".
Oct 24, 2026
How (and why) to take a logarithm of an image
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41:40Grant SandersonNARRATOR
In fact, this rectangle here in our bizarre warped log image that has a width of log 16 and a height of 2 pi contains all the information about the image on the right.
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41:52Grant SandersonNARRATOR
It corresponds to this annulus of the Drosta image, and if you were to shift that rectangle exactly log of 16 units to the left, you would get a scaled-down version of that annulus, exactly 16 times smaller, that nestles in perfectly like a puzzle piece.
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42:08Grant SandersonNARRATOR
And if you repeat that infinitely many times, it gives you this infinite nesting that characterizes the Drostezoom.
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42:16Grant SandersonNARRATOR
I've drawn things so far, we have this cutoff to the log image on the right side, and at this point, you know well that vertical lines on the left correspond to circles on the right, so you can probably guess that this corresponds to the fact that I gave a maximum radius to that drosta image.
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42:31Grant SandersonNARRATOR
But of course, you don't need to do that.