Image analysis – Histogram processing – For setting a threshold
Patent
1985-02-07
1988-05-03
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
340729, 340728, 340747, G06K 936, G06F 3153
Patent
active
047425580
ABSTRACT:
According to an image information retrieval/display apparatus, an original image is represented by a hierarchical structure from a global image of high level to a local image of low level in accordance with resolutions thereof. Only difference information between the images of the respective levels is coded and stored, so that the number of codes will not be increased. When an operator directly designates any partial area within the displayed global image, local images are sequentially retrieved. By adding and combining the difference information of the retrieved local image in the designated area within the global image, the desired local image can be displayed at high speed.
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D. P. Greenberg, Computer Graphics in Architecture, 1984, 396-404, Scientific American.
Ishibashi Satoshi
Ogura Kenji
Yonezawa Susumu
Boudreau Leo H.
Nippon Telegraph & Telephone Public Corporation
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