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lavan
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using PCA how to reduce the dimension of image ?

Asked by lavan
on 4 Oct 2011
hi.. im working on computer vision .here i want to compression the motion capture data without any loss .for that .,initially i want to work with PCA .can anyone help me please to code the image using PCA.?

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2 Answers

Answer by Daniel Shub
on 4 Oct 2011
 Accepted Answer

PCA can be used to reduce the dimensionality, but it is a lossy process. If you are not limited to lossless compression, then the princomp tutorial:
doc princomp
is a good starting point.

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thanks for your response.but i cant access that doc..
I cant access that doc too :(
You need to have the stats toolbox to use princomp (and doc princomp). The documentation is available online here:
http://www.mathworks.com/help/releases/R2011a/toolbox/stats/princomp.html

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Answer by Carlos
on 5 Feb 2013

In this document you can find something about PCA and Image http://people.maths.ox.ac.uk/richardsonm/SignalProcPCA.pdf

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