Recognition of check marks, signature validation, region extraction and other optical mark recognition functions.
Wednesday, 28 February 2018
SimpleIndex supports simple checkbox recognition function that will give a field the value “1” when the amount of black pixels exceeds the specified threshold for that zone and “0” if not. To configure a field for Optical Mark Recognition, select “OMR” for the field type on the Index options tab. In the Zones & OCR settings, click “Set Field Coordinates” and follow the on-screen instructions to mark the check box region on the image as you would with an OCR field. Use unchecked checkboxes for your sample image. After drawing the zone and selecting the OMR field from the list, you will be prompted to enter a pixel threshold for the field. The number shown is the current number of black pixels in the selected zone. If the box is unchecked, the threshold should be slightly higher (10-20%). If you enter a negative number for the threshold, images that exceed the threshold will have the OMR zone saved to a separate file. This is useful for
Tuesday, 23 January 2018
Simple Checkbox Recognition Some forms require scanning software to recognize the presence or absence of a mark in a particular location, such as a checkbox, without worrying about the specific shape or symbol drawn therein. The ability to do this is called Optical Mark Recognition, or OMR. Let’s take a look at how this feature can help you index your documents and how SimpleIndex improves upon the standard OMR process: Optical Mark Recognition Optical Mark Recognition lets you define check box regions on scanned images. OMR is very fast and can be used for a variety of applications: Business reply mail Simple surveys Separate multi-page documents Document routing control Verify presence of signatures To configure OMR, use an unfilled form to obtain baseline counts of how many black “pixels” are in the box. When processing, SimpleIndex compares the amount of black in each image to the baseline value to determine if the box is checked or not. With OMR, it is very impor