Patent ID: 9033238
Filing Date: 2015-05-19
Classification: G06K,G07G

Abstract:
1. A method comprising the acts: at a retail checkout, capturing imagery of an item to be purchased, said capturing including capturing a first 2D image depicting a first view of the item, and capturing a second 2D image depicting a second view of said item, the second view depicting an excerpt of the item not depicted in said first view, the item having moved a distance “d” between capture of the first and second images; discerning first apparent geometric distortion of a first region of said item, as depicted in one of the captured images; discerning second apparent geometric distortion of a second region of said item, as depicted in said one of the captured images, the second region being distinct from the first region, the second geometric distortion being different than the first geometric distortion; applying a first geometric compensation to virtually re-map the first region to mitigate said apparent first geometric distortion, the first geometric compensation employing a first projective transformation function; applying a second geometric compensation to virtually remap the second region to mitigate said apparent second geometric distortion, the second geometric compensation employing a second projective transformation function, the second projective transformation function being different than the first projective transformation function; and outputting resultant data; and processing the resultant data to derive item identification information, the item identification information being based on item printing that spans at least a portion of the first region and a portion of the second region; wherein each of said discerning acts makes use of the distance “d”.