Patent ID: 6993156
Filing Date: 2006-01-31
Classification: G06K

Abstract:
1. A system for tracking digital templates of a digital scene defined by plural images, comprising: a computer graphics card including a raster processor that transforms at least one of the templates, said transforms including combinations of rotations, scales, perspective transforms, and translations; a statistics enable switch included in the computer graphics card, wherein accumulation of information for each digital template is enabled when said statistics enable switch is enabled, and wherein said computer graphics card provides the at least one transformed template to a frame buffer included in the computer graphics card when said statistics enable switch is disabled; a statistical compare processor included in the computer graphics card that accumulates information for each digital template and statistically compares and matches images associated with the templates for tracking the templates based on the accumulated information when said statistics enable switch is enabled; and wherein the statistical compare processor allows use of pixel alpha values for weighting statistical information used by the statistical compare processor for simultaneously and statistically comparing and matching images associated with the templates for tracking the templates.