Patent Document ID: 4200861
Application ID: 05939061
Patent Status: 1

Claim One:
1. A pattern recognition method for determining the best comparison between a reference area and a search area and in real time comprising the steps of: generating a clocked digitized video signal having a pulse width termed a pixel, generating a super pixel having a pulse width greater than a pixel by a given amount, storing pixels representing a reference scene in an addressable memory location, storing super pixels representing said same reference scene in a separate addressable memory, convolving super pixels generated from a search area with super pixels from said memory and generating a count indicative of a comparison in each segment compared, storing the count in each segment in a separate addressable memory, determining the maximum count and identifying the coordinate of the address of the memory having the maximum count as a measure of the coarse location of the best match, establishing a search pattern around said coarse coordinate including an odd number of pixels with the coordinate pixel in the center, convolving pixels generated from said search pattern with pixels from said memory and generating a count indicative of a comparison in each segment of the search pattern, storing the count in each pattern in a separate addressable memory, and determining the maximum count in each of the segments of the search pattern and identifying the coordinate of the address as a measure of the fine location of the best match.