how to do windowing in image using matlab?
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how to do windowing in image using matlab?
2 个评论
SRI
2014-7-3
Hi shah Could you please clear with your question so that we can assist you with the solution
回答(2 个)
Image Analyst
2014-7-4
Try conv2(), imfilter(), or nlfilter(), or blockproc() depending on exactly what you want to do. conv2() and imfilter() are for linear filters. nlfilter is for any bizarre custom function you want write and apply to each window. blockproc() is if you want to process windows in "jumps" where it moves from one location to the next by more than 1 pixel.
5 个评论
Image Analyst
2014-7-7
No. To do that you need to do connected components labeling. But even before that you need to do image segmentation to find the "objects". See my Image Segmentation Tutorial: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
SRI
2014-7-7
clc;
close all;
input = imread('cameraman.tif');
[row,col] = size(input);
% minValue = mean(mean(input));
for i = 2:row-1
for j =2:col-1
outImage(i-1:i+1,j-1:j+1) = input(i-1:i+1,j-1:j+1)
% if outImage(i-1:i+1,j-1:j+1) < minValue % outImage(i-1:i+1,j-1:j+1) = 1;
% end
end
end
Hi shah you just apply any filter operation with this code because this will divide a image into 3 *3 matrix after that you can process as you wish
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