Abstract: A polygon finder and pruned tree search are provided. The polygon finder uses a geometric matcher to compare corner features from a polygon model against extracted corner features from an input image to locate an object in the image that matches the polygon. Any geometric match technique may be used to locate the polygons based on their corner features. The preferred geometric matcher is a pruned tree search which calculates pose and match fit errors during search tree construction. If the pose falls outside predefined pose bounds or the fit errors are larger than the maximum limit imposed by features uncertainty bounds, the search branch is truncated. The preferred geometric matcher may be used to locate any type of geometry.

Abstract: A polygon finder and pruned tree search are provided. The polygon finder uses a geometric matcher to compare corner features from a polygon model against extracted corner features from an input image to locate an object in the image that matches the polygon. Any geometric match technique may be used to locate the polygons based on their corner features. The preferred geometric matcher is a pruned tree search which calculates pose and match fit errors during search tree construction. If the pose falls outside predefined pose bounds or the fit errors are larger than the maximum limit imposed by features uncertainty bounds, the search branch is truncated. The preferred geometric matcher may be used to locate any type of geometry.