Method for matching input image with reference image, apparatus for the same, and storage medium storing program for implementing the method
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United States of America Patent
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Aug 29, 2000
Grant Date -
N/A
app pub date -
Jan 21, 1998
filing date -
Jun 10, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Matching between a reference image and an input image is performed without relying on specific elements such as line segments or tables. An edge image is generated from the reference image and divided into small blocks, and search range and search priority of each small block are determined and stored in a storage device. When an input image is input, an edge image thereof is generated. The small blocks in the reference image are retrieved in order of priority, and matching with the input image is judged. When the corresponding position of one small block is determined, the search range and search priority for other small blocks not yet judged for matching are updated on the basis of the determined corresponding position.
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