Image analysis – Histogram processing – For setting a threshold
Patent
1981-06-10
1984-05-22
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
356375, 356399, 358101, 364490, 382 25, 382 44, 382 48, G06K 932
Patent
active
044505795
ABSTRACT:
A recognition apparatus comprising an image sensor sensing an image of a pad pattern on an IC chip pattern, a pre-treatment circuit for converting the outputs of the image sensor into binary-coded signals in accordance with at least two slice levels, and a pattern detecting section for detecting the position and inclination of the pad pattern based on the images of the pad and chip patterns corresponding to the data stored in a memory; that is, the binary-coded signals generated in accordance with two slice levels. Two image sensors may be used for sensing the chip and pad data respectively.
REFERENCES:
patent: 3711831 (1973-01-01), Kaneko et al.
patent: 3898617 (1975-08-01), Kashioka et al.
patent: 3899634 (1975-08-01), Montone et al.
patent: 4021778 (1977-05-01), Ueda et al.
patent: 4163212 (1979-07-01), Buerger et al.
patent: 4213117 (1980-07-01), Kembo et al.
patent: 4233625 (1980-11-01), Altman
patent: 4238780 (1980-12-01), Doemens
patent: 4334241 (1982-06-01), Kashioka et al.
patent: 4352125 (1982-09-01), Guth
Inagaki Takefumi
Koezuka Tetsuo
Nakashima Masato
Boudreau Leo H.
Fujitsu Limited
LandOfFree
Recognition method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recognition method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recognition method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1482291