Image analysis – Histogram processing – For setting a threshold
Patent
1982-06-28
1985-10-15
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
250556, 356 71, 382 17, 382 67, G06K 926
Patent
active
045478961
ABSTRACT:
In a printed matter identifying apparatus of the present invention, the light source illuminates the detecting fields of the note. The reflected light-waves from the detecting fields are lead to the light receivers through the focusing lenses, the diffusion plates, the optical slits, the light conducting paths and red color transmitting and blue color transmitting filters. The output signals from the light receivers are amplified by the amplifiers and sampled by the sampling circuits. Among the sampled color component signals, the red component signals are applied to the subtracter to produce the red component difference signal and the blue component signals are applied to the adder to produce the blue component sum signal. These different signal and sum signal are applied to the comparators respectively and compared with the reference signals read out from the memory. The output signals from the comparators are supplied to the judgment circuit where the judgment of the printed matter is performed.
REFERENCES:
patent: 3202761 (1965-08-01), Bibbero
patent: 3469238 (1969-09-01), Partin
patent: 3496370 (1970-02-01), Haville et al.
patent: 3745527 (1973-07-01), Yoshimura et al.
patent: 3922090 (1975-11-01), Fain
patent: 4041456 (1977-08-01), Ott et al.
patent: 4179685 (1979-12-01), O'Maley
patent: 4183665 (1980-01-01), Iannadrea et al.
Ishida Tsuyoshi
Nagahashi Kenji
Ohtombe Ko
Osawa Hideo
Boudreau Leo H.
Tokyo Shibaura Denki Kabushiki Kaisha
LandOfFree
Printed matter identifying 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 Printed matter identifying apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Printed matter identifying apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2432121