Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1987-07-30
1989-04-18
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358 93, 358101, 358125, 358166, H04N 140
Patent
active
048231940
ABSTRACT:
An original picture taken by an ITV camera is subject to a local maximum filter processing and, if necessary, further to a local minimum filter processing, so that a background image is formed from the original picture itself. A target image included in the original picture is extracted separated from the background image by the subtraction between the thus obtained background image and the original picture. According to the present invention, since the background image is formed on the basis of the original picture, the unevenness or change of brightness, which equally influences on both of the target image and the background image, has no influence on the accurate extraction of the target image.
REFERENCES:
patent: 4065788 (1977-12-01), Meier
patent: 4258394 (1981-03-01), Kennedy
patent: 4546383 (1985-10-01), Abramatic
patent: 4670788 (1987-06-01), Ozaki
patent: 4706120 (1987-11-01), Slaughter
patent: 4729019 (1988-01-01), Roovrais
Institute of Electrical Communication Engineers (Japan) Technical Study Group on Pattern Recognition and Learning, Report PRL 85-73, pp. 35 -46.
Fujiwara Kazunori
Kanasaki Morio
Kobayashi Yoshiki
Mishima Tadaaki
Takatoo Masao
Britton Howard W.
Hitachi , Ltd.
LandOfFree
Method for processing gray scale images and an apparatus thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for processing gray scale images and an apparatus thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for processing gray scale images and an apparatus thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2399658