Image analysis – Image transformation or preprocessing – Correlation
Patent
1996-05-06
1999-08-03
Boudreau, Leo H.
Image analysis
Image transformation or preprocessing
Correlation
382206, 382207, 382209, 382210, 382218, 382219, 382276, 382277, 382279, 382280, G06K 15316, G06K 964
Patent
active
059335467
ABSTRACT:
A multiresolution method and apparatus for searching of a database of images where the search is performed on compressed images, without first decompressing them. The method searches the database of compressed images first at a low resolution to obtain the relative quality of a match between a search template and a candidate image. If the match is below a particular threshold, the search is terminated without committing any further computational resources to the search. Conversely, if the match is above a particular threshold, the method enhances the resolution of the candidate image and then performs another match. As long as the relative quality of the match is above the particular threshold, the resolution of the candidate image is successively enhanced, until a match determination is made at a full resolution of the candidate image.
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Boudreau Leo H.
Brosemer Jeffrey J.
Isztwan Andrew G.
NEC Research Institute Inc.
Patel Kanji
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