Features for retrieval and similarity matching of documents...

Image analysis – Pattern recognition – Feature extraction

Reexamination Certificate

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C382S191000, C382S173000, C382S218000, C382S224000, C382S232000

Reexamination Certificate

active

07912291

ABSTRACT:
A method and apparatus for image processing is described. In one embodiment, the method comprises accessing header data from a multi-resolution codestream of compressed data of a first document image, deriving one or more retrieval attributes from the header information, and performing image analysis between the first document image and a second document image based on the one or more retrieval attributes.

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