System and method of measuring fidelity of decompressed video si

Facsimile and static presentation processing – Facsimile – Auxiliary signal

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358458, 395132, H04N 146

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active

053293797

ABSTRACT:
A method of quantitatively measuring fidelity of a reproduced image reconstructed from a compressed data representation of an original image is disclosed. The method comprises, responsive to user selection, for establishing a global assessment mode or a local assessment mode. In the global assessment mode changes in luminance of the reproduced image from the original image and changes in color in first and second color difference values of the reproduced image from the original image are used score fidelity. Changes in luminance are measured using a dynamic range, nonlinear transform equation. In the local assessment mode, and responsive to user selection, the reproduced image and the original image are segmented and corresponding pairs of segments from the reproduced image and the original image are identified. Scoring of fidelity of the reproduced image to the original image is done by comparing corresponding pairs of segments in color, luminance, shape, displacement and texture.

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Arturo A. Rodriguez and O. Robert Mitchell, "Image Segmentation by Successive Background Extraction", Pattern Recognition, vol. 24, No. 5, 1991, pp. 409-420

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