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I have a centroid(x,y) of object in image..How to extract patch from image around centroid

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Tahir
Tahir 2015-3-11
评论： Image Analyst 2015-3-13
Hi, There are objects( nucleus) in an image.i have the centre(x,y) values of objects ...I want to extract patches from image around the center...The patch center will be the center(x,y) of object. Please help.

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Image Analyst
Image Analyst 2015-3-11
subImage = grayImage(row1:row2, column1:column2);
or you can use imcrop().
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Image Analyst
Image Analyst 2015-3-13
Then use simple math
row1 = int32(y - 40);
row2 = row1 + 79;
column1 = int32(x - 40);
column2 = column1 + 79;
subImage = rgbImage(row1:row2, column1:column2, :);

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