how to repalce a matrix

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Pat
Pat 2011 年 11 月 21 日
hi i have a image of 256*256 matrix,and other image2 of 8*8 matrix,now i want to remove 8*8 matrix from 256*256matrix replace image2 8*8 into 256*256 matrix,and wen i call that image the repalced image must be indicated by rounding box
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Jan
Jan 2011 年 11 月 21 日
"rounding box" == "bounding box"?

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Amith Kamath
Amith Kamath 2011 年 11 月 21 日
I wonder what the purpose of this is, but here goes:
Image1 = imread('rice.png'); % conveniently is 256x256.
Image2 = uint8(zeros(8,8)); %Artificial image 2.
Image3 = Image1; Image3(1:8,1:8) = Image2; %change the indices 1:8 to wherever you want to put the Image2 in Image1;
You could add the bounding box, if that's what you mean, by manually adding rows and columns of black pixels around your Image2. Image2(1,:) = ones(size(Image2(1,:))); and so on for all the borders. Does this work?

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