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Topic: Need help
Replies: 2   Last Post: Dec 30, 2012 11:44 PM

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Posts: 12,968
Registered: 12/26/06
Re: Need help
Posted: Dec 30, 2012 11:44 PM
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"Krishna Chaitanya Nosina" <nkc_abbas@yahoo.co.in> wrote in message <kbje3q$evs$1@newscl01ah.mathworks.com>...
> Hi,
> Please help me in reading 3x3 matrix at a time from 256x256 image coefficients and the process will be repeated for all the pixel values.

Krishna :
I suggest you use imfilter() or conv2(). Or you can use blockproc(). Or (last resort) you can do it yourself with 4 for loops, the outer two over rows and columns, and the inner two over the 3 by 3 sliding window. What operation do you plan on doing in that sliding window?
Image Analyst

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