Image analysis – Histogram processing – For setting a threshold
Patent
1986-03-26
1988-10-04
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
358163, 358293, G06K 928, H04N 124
Patent
active
047760311
ABSTRACT:
An image reading apparatus has CCD line sensors, shift registers, a selector, and an arithmetic unit. Image data lost corresponding to joints in the CCD line sensors is interpolated using image data adjacent the lost data. The interpolation data is obtained by calculating the average values of the image data preceding and succeeding the lost data, and calculating the density gradient in the joint using the average values. The joint section can be divided into halves, and each half can be interpolated using image data near thereto. Original images can be reproduced with high precision without adverse influences of joints in the sensors.
REFERENCES:
patent: 3846754 (1974-11-01), Oka et al.
patent: 4147928 (1979-04-01), Crean et al.
patent: 4257705 (1981-03-01), Hosoe et al.
patent: 4309712 (1982-01-01), Iwakura
patent: 4377820 (1983-03-01), Reitmeier
patent: 4470065 (1984-09-01), Reitmeier
patent: 4527199 (1985-07-01), Kinoshita et al.
patent: 4532551 (1985-07-01), Kurata et al.
patent: 4566788 (1986-01-01), Buczek
patent: 4586082 (1986-04-01), Wilkinson
patent: 4590520 (1986-05-01), Frame et al.
patent: 4630307 (1986-12-01), Cok
patent: 4641199 (1987-02-01), Miyagi
patent: 4675533 (1987-06-01), Shimizu
patent: 4691114 (1987-09-01), Hasegawa et al.
Boudreau Leo H.
Canon Kabushiki Kaisha
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