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1. desc.row() is a copy. no cigar erasing that
2. erase messes with the size(),so break out after that, or face doom.

you can't do it "inplace", so copy anything but the offending row(s) to a new Mat

1. desc.row() is a copy. no cigar erasing that
2. erase messes with the size(),so break out after that, or face doom.

you can't do it "inplace", so copy anything but but the offending row(s) to a new Mat