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Held: Monday, February 15, 2010
Summary: Today we consider some basic control stuctures that will allow us to write more general image filters.
(image-variant image color-transform)- build a new image by applying
color-transformto every pixel.
(image-transform! image color-transform- change the pixels
(image-variant image (o rgb-redder rgb-bluer))
(image-variant image (lambda (rgb) ...))
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