A system and method for locating regions in a target image matching a template image with respect to color and pattern information. The template image is characterized with regard to pattern and color. A first-pass search is made using color information from the color characterization of the template...http://www.google.com/patents/US7039229?utm_source=gb-gplus-sharePatent US7039229 - Locating regions in a target image using color match, luminance pattern match and hill-climbing techniques
