Patent ID: 8340430
Filing Date: 2012-12-25
Classification: G06K

Abstract:
1. A method for determining an image characteristic in a digital image, said method comprising: forming a binary image from a digital image; determining a first glyph component in said binary image; determining a first reference location for said first glyph component; determining a first feature location, in said first glyph component, associated with a first feature, wherein said first feature is associated with a first pattern comprising a plurality of glyph pixels, a plurality of non-glyph pixels and at least one don't care pixel, and wherein said determining a first feature location comprises matching a pixel region comprising a pixel in said first glyph component and a plurality of pixels surrounding said pixel to said first pattern, wherein said pixel is a first feature location when all glyph pixels in said plurality of glyph pixels correspond to glyph pixels in said pixel region and all non-glyph pixels in said plurality of non-glyph pixels correspond to non-glyph pixels in said pixel region; determining a first position, relative to said first reference location, of said first feature location, wherein said first position indicates in which quadrant, relative to said first reference location, said first feature location is located; accumulating, in a first distribution counter, a frequency-of-occurrence count related to said first feature and said first position; and determining an image characteristic based on a distribution feature, wherein said distribution feature is based on said first distribution counter.