How do I remove the square box surrounding on the single digit?

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when i try to recognize the digit that surrounded by square box ,but i can't remove the edges of the square box.can anyone tell how do i remove??

Accepted Answer

Image Analyst
Image Analyst on 19 Jan 2015
Threshold it, fill it, then call imerode() to shrink the binary blob.
binaryImage = grayImage > 128;
binaryImage = imfill(binaryImage , 'holes');
erodedImage = imerode(binaryImage, true(9));
Then subtract from original binary image to get just the straight borders.
maskImage = binaryImage - erodedImage;
Then use that as a mask to assign any other value, such as 0 or 128 or whatever.
grayImage(maskImage) = 0;
Or you can use nearby image image values if you want by using roifill(). Give it a try and come back with your code attempt if you still need help.
Image Analyst
Image Analyst on 22 Jan 2015
Like I said, "For the first image, you can check if the centroid of one blob is inside the bounding box of a different blob. " If you don't know how to find centroids and bounding boxes, then see my tutorial It goes over that in well-commented detail.

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More Answers (1)

suraj tarade
suraj tarade on 5 Oct 2017
Edited: suraj tarade on 5 Oct 2017
Hi i also want solution for the same please find below link for details

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