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Topic: Deriving intrinsic images from image sequences
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trocdelc  7
08-16-2008 07:54 AM ET (US)
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newshep  6
08-03-2007 03:49 AM ET (US)
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Messages 5-4 deleted by topic administrator 07-21-2006 09:03 AM
Alyosha Efros  3
04-21-2006 01:32 AM ET (US)
Analogy to matrices:
A sparse matrix is a matrix with many elements set to 0.

filter coding:
if you look at a single filter response channel, it will be mostly 0 with a few places that are non-zero (edges basically). The idea that the filter only fires at very few places in an image is captured by the work spareness.
David Lee  2
04-20-2006 11:41 PM ET (US)
Edited by author 04-20-2006 11:44 PM
A question about terminology: we use the word "sparse" in many context, and in this case, it means that the value of a random variable is close to zero. I don't really understand why such concept can be associated with the word "sparse".
Dave BradleyPerson was signed in when posted  1
04-03-2006 08:51 AM ET (US)
please post your thoughts about the "Deriving Intrinsic Images from image sequences" paper here
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