crop the base image from the mask

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kittu 2012-1-12

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https://ww2.mathworks.cn/matlabcentral/answers/25922-crop-the-base-image-from-the-mask

hi, I have a base image and a mask image (both are 3d medical Images)in .mhd format.I have the code to read my image in the above format. Can anyone provide me help in cropping my base image with the mask.

Thanks

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Image Analyst 2012-1-12

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https://ww2.mathworks.cn/matlabcentral/answers/25922-crop-the-base-image-from-the-mask#answer_33933

在 MATLAB Online 中打开

To crop, you can calculate the top, bottom, left, and right columns of the mask's "true" area by using any(). Then use

croppedImage = fullImage(row1:row2, col1:col2);

or you can use imcrop().

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Image Analyst 2012-1-12

You might be able to extend that concept to a 3D image, just add a slice1:slice2 dimension to the fullImage() index list. fullImage is the name of your image array, not a function. Please verify that you want cropping (to the maximum extents of the mask), and not simply masking the data with your mask - they're very different things.

kittu 2012-1-12

hey thanks for the solution.i got the solution.just by element by element multiplication of the base image and mask image,I was able to crop the base image with the mask image..

thanks for the help.

crop(i,:,:)=double(mask(i,:,:)).*double(image(i,:,:))

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