Boots – shoes – and leggings
Patent
1981-06-02
1983-06-28
Chin, Gary
Boots, shoes, and leggings
364559, 358101, G01B 1100
Patent
active
043909558
ABSTRACT:
A position detecting system has the following steps of: detecting picture element information (E2) corresponding to patterns on a chip (10) illuminated; calculating threshold information (E3) representing a threshold level (S1, S3) to discriminate a pad pattern (11) from the patterns on the basis of the mean (eH) of a high level portion of the picture element information (E2) and the mean (eL) of low level portion thereof; and calculating a position of the pad pattern (11) from video information (E4) discriminated with respect to the threshold level (S1, S3) by comparing a level of the threshold information (E3) with a level of video information (E4) corresponding to the picture element information (E2) used to calculate the threshold information (E3).
REFERENCES:
patent: 3603728 (1971-09-01), Arimura
patent: 3814845 (1974-06-01), Huribrink et al.
patent: 3899634 (1975-08-01), Montone et al.
patent: 4125798 (1978-11-01), Miller
patent: 4163212 (1979-07-01), Buerger et al.
patent: 4186412 (1980-01-01), Arimura
patent: 4291334 (1981-09-01), Mese et al.
IBM Technical Disclosure Bulletin; Duffy et al., Automatic CCTV Positioning System, vol. 14, No. 8, Jan. 1972, pp. 2348-2350.
Chin Gary
Tokyo Shibaura Denki Kabushiki Kaisha
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