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Sep
24
awarded  Autobiographer
Mar
15
awarded  Popular Question
Nov
4
asked Given only the graphical representation of a curve, how can I find the function?
Dec
28
comment Explanation of this image warping (bulge filter) algorithm
aha, polar coordinate system was the buzz-phrase I've been looking for it seems! Thanks very much! Two additional questions: 1. where does rn=2r^(2.5) come from? 2. What is the order of operations from the original post where rn is given as rn=2r^2.5/0.5? I assume the division by 0.5 effects the horizontal and vertical shift you mentioned, but is the actual order 2r^(2.5/0.5) or (2r^2.5)/0.5? The first form gives 'nicer' numbers since 2.5/0.5=5...
Dec
28
awarded  Scholar
Dec
28
accepted Explanation of this image warping (bulge filter) algorithm
Dec
28
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Dec
28
asked Explanation of this image warping (bulge filter) algorithm