Non-linear quantization and similarity matching methods for...

Image analysis – Image transformation or preprocessing – Image storage or retrieval

Reexamination Certificate

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C382S170000

Reexamination Certificate

active

09978668

ABSTRACT:
A method for constructing a database having image information representing a plurality of images including the steps of: a) calculating L×5 number of normalized edge histogram bins to generate L number of edge histograms of a target image, wherein each edge histogram has five normalized edge histogram bins and represents a spatial distribution of five reference edges in a sub-image and L is a positive integer, wherein the reference edges include four directional edges and a non-directional edge; b) non-linearly quantizing the L×5 number of normalized edge histogram bins to generate L×5 number of quantization index values for the target image; c) storing the L×5 number of quantization index values to the database; and d) repeating the steps a) to c) until all of the stored images are processed to thereby construct the database having the image information.

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patent: 99/35596 (1999-07-01), None
Abdel-Mottaleb. “Image retrieval based on edge representation.” Proceedings of the International Conference on Image Processing. vol. 3, Sep. 2000, pp. 734-737.
Park et al., “Efficient Use of Local Edge Histogram Descriptor”, Proceedings ACM Multimedia Conference, Nov. 4, 2000, pp. 51-54.
Park et al., “Core Experiments on MPEG-7 Edge Histogram Descriptors”, ISO/IEC JTC1/SC29/WG11, May 2000.
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Jain et al.;Image Retrieval Using Colar and Shape; May 15, 1995; Dept. of Computer Science, Michigan State University.
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Japanese Office Action for 2002-536846.

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