Patent ID: 6272231
Filing Date: 2001-08-07
Classification: G06K,G06T

Abstract:
A method for feature sensing on a sequence of image frames, comprising:a step for transforming each image frame using a wavelet transformation to generate a transformed image frame;a step for initializing nodes of a model graph, each node associated with a wavelet jet specific to a feature, to locations on the transformed image frame by moving the model graph across the transformed image frame and placing the model graph at a location in the transformed image frame of maximum jet similarity between the wavelet jets of the nodes and locations on the transformed image frame determined as the model graph is moved across the transformed image frame;a step for tracking the location of one or more nodes of the model graph between image frames; anda step for reinitializing the location of a tracked node if the tracked node's location deviates beyond a predetermined position constraint between image frames.