How to crop image based on binary mask

Question

I am using torch with some semantic segmentation algorithms to produce a binary mask of the segmented images. I would then like to crop the images based on that mask. To be clea

Answer 1

I've implemented this in Python, assuming that you have your input image and mask available as Mat Objects. Given that src1 is your image and src1_mask is your binary mask:

src1_mask=cv2.cvtColor(src1_mask,cv2.COLOR_GRAY2BGR)#change mask to a 3 channel image 
mask_out=cv2.subtract(src1_mask,src1)
mask_out=cv2.subtract(src1_mask,mask_out)

Now mask_out contains the part of the image src1 located inside the binary mask you defined.