Image analysis – Color image processing – Image segmentation using color
Reexamination Certificate
2006-06-27
2006-06-27
Alavi, Amir (Department: 2621)
Image analysis
Color image processing
Image segmentation using color
C382S260000
Reexamination Certificate
active
07068840
ABSTRACT:
The present invention is in the technical field of analyzing and processing digitized color images. More specifically it relates to a method of determining the chromaticity of an illuminant (white reference) of a color image representing a natural scene of objects or entities. The present invention uses the principle of the constancy of dichromatic color, but it also uses spatial color segmentation of the image and relevant filtering to select the regions of the image to be analyzed, that is to extract the analyzed regions non-compliant with the chromatic model. The invention is applicable for improving the performance of the means of analysis and recognition of the shapes of objects in an image.
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Graham D. Finlayson and Gerald Schaefer, “Solving of Colour Constancy Using a Constrained Dichromatic Reflection Model”, published in May 2001, in International Journal of Computer Vision 42(3), pp. 126-144, by Kluwer Academic Publishers.
Alavi Amir
Eastman Kodak Company
Manno Kathleen Neuner
Novais David A.
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