Tandent Vision Science, Inc.

Patrick Buehler

Casey Arthur Smith

Richard Mark Friedhoff

Bruce Allen Maxwell

Andrew Neil Stein

Jean-Francois Lalonde

In a first exemplary embodiment of the present invention, an automated, computerized method is provided for processing an image. According to a feature of the present invention, the method comprises the steps of providing an image file depicting an image defined by image locations, in a computer memory, generating a bi-illuminant chromaticity plane in a log color space for representing the image locations of the image in a log-chromaticity representation for the image, providing a set of estimates for the orientation of the bi-illuminant chromaticity plane and calculating an orientation for each one of the image locations as a function of the set of estimates for the orientation.

Log-chromaticity clustering pipeline for use in an image process

In a first exemplary embodiment of the present invention, an automated, computerized method is provided for processing an image. According to a feature of the present invention, the method comprises the steps of providing an image file depicting an image defined by image locations, in a computer memory, generating a bi-illuminant chromaticity plane in a log color space for representing the image locations of the image in a log-chromaticity representation for the image, calculating a set of log-chromaticity cluster maps, each based upon an estimate for an orientation of the bi-illuminant chromaticity plane selected from a set of estimates and including a cluster for each one of the image locations, and merging the set of log-chromaticity cluster maps to obtain a single, merged log-chromaticity cluster map.

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Pittsburgh, PA, United States of America

Patrick Buehler