Content rectangle can be auto detected by scanning the image (after thresholding) from the sides and looking where non-white pixels start. If it's fast enough it could be a default setting. If custom content rectangle is passed as a parameter by the user let's not use the detection.
Content rectangle can be auto detected by scanning the image (after thresholding) from the sides and looking where non-white pixels start. If it's fast enough it could be a default setting. If custom content rectangle is passed as a parameter by the user let's not use the detection.