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I have an image taken from the display of an instrument screen. Is it possible to detect only the digits out of all the objects from the image and then somehow highlight them ?? (just like facebook automatically detects faces of persons)
I would start by using imdilate() to cause the sections at the bottom to "run together". Then convert to binary, regionprops, find the bounding box of the largest (or few largest) blob, remove those blobs from the original image. This will focus on the more scattered portions left over. At that point, it might potentially be as easy as a horizontal scan to find the bounds of the unneeded parts on each side, and removing those, leaving only the digits in the center. regionprops to bounding box.