Image analysis – Histogram processing – For setting a threshold
Patent
1988-05-03
1991-06-04
Razavi, Michael
Image analysis
Histogram processing
For setting a threshold
382 31, G06K 974
Patent
active
050220870
ABSTRACT:
In an apparatus for extracting primitive patterns included in an image such as a character or any other figure, the image subjected to primitive pattern extraction is optical multiplied by a multiplier to form simultaneously in parallel a plurality of optical pattern images of a substantially identical shape, and optical correlation calculation between the plurality of optical pattern images and the primitive patterns which are formed in the various types of primitive masks is performed individually and instantaneously, the various type of primitive masks being arranged at a position spaced apart by a predetermined distance therefrom, thereby detecting beams emitted through the various types of primitive masks. Image multiplication, optical correlation calculation between the primitive pattern and the optical pattern image, and transmission of the result of the optical correlation calculation to the photosensors can be simultaneously performed at the light propagation speed. The apparatus structure can be simplified at low cost, and primitive pattern extraction operations can be performed at high speed.
REFERENCES:
patent: 3252140 (1966-05-01), Lemay et al.
patent: 3461301 (1969-08-01), Fitzmaurice et al.
patent: 3550119 (1970-12-01), Rabinow
patent: 3965299 (1976-06-01), Lin
patent: 4573198 (1986-02-01), Anderson
patent: 4790024 (1988-12-01), Peppers et al.
patent: 4845766 (1989-07-01), Peppers et al.
Hirsh et al., "Character Reader", IBM Technical Disclosure Bulletin, vol. 14, No. 9, Feb. 1972, p. 2590.
Craig et al., "Bubble Domain Electronic-To-Optical Image Transducer", IBM Technical Disclosure Bulletin, vol. 13, No. 1, Jun. 1970.
Myers Gregory K.
Peppers Norman A.
Pierce Gerald A.
Young James R.
LandOfFree
Apparatus for detecting primitive patterns in an image does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for detecting primitive patterns in an image, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for detecting primitive patterns in an image will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1032976