using PCA how to reduce the dimension of image ?

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lavan
lavan el 4 de Oct. de 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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Daniel Shub
Daniel Shub el 4 de Oct. de 2011
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
http://www.mathworks.com/help/releases/R2011a/toolbox/stats/brkgqnt.html#f75476
is a good starting point.
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Jonny
Jonny el 16 de Oct. de 2011
I cant access that doc too :(
Daniel Shub
Daniel Shub el 16 de Oct. de 2011
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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Carlos
Carlos el 5 de Feb. de 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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