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Re:A Pixel Is Not a Little Square (1995) [pdf] by enthdegree on Sunday November 16, 2014 @03:26PM (#8615308)
Great read! Very similar ideas apply for image capture:

http://enthdegree.tumblr.com/post/102480374444/a-model-for-i...

Under this model, a pixel can be interpreted as both a point-sample and a square.

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