Image analysis – Pattern recognition – Feature extraction
Patent
1994-05-26
1997-11-25
Boudreau, Leo
Image analysis
Pattern recognition
Feature extraction
382210, 382266, G06K 948
Patent
active
056920725
ABSTRACT:
An edge detecting device with an image pickup unit for preparing an electric image signal from an optical signal from an object having edge information, a sampling device for converting the image signal into digital image data, a Fourier transformation device for converting the image data to data in the spatial frequency region, a filter for cutting off at least the zero order spatial frequency components, an inverse Fourier transformation device for converting the filtered spatial frequency data to real space data, a rough edge detecting device for obtaining rough edge data in a simplified form, an edge detector for detecting ultimate edge information on the basis of the data obtained by the inverse Fourier transformation device and the data obtained by the rough edge detecting device, and a display unit for displaying the ultimate edge information in a predetermined form. The edge detecting device is capable of detecting an edge, or a plurality of edges, including a light-dark boundary contained in the optical signal from the object with high accuracy.
REFERENCES:
patent: 4764974 (1988-08-01), Woods
patent: 4806774 (1989-02-01), Lin et al.
patent: 4977504 (1990-12-01), Funahashi
patent: 4998286 (1991-03-01), Tsujiuchi et al.
patent: 5018218 (1991-05-01), Peregrim et al.
patent: 5022087 (1991-06-01), Peppers et al.
patent: 5029227 (1991-07-01), Kawamura
patent: 5081689 (1992-01-01), Meyer et al.
patent: 5121445 (1992-06-01), Tsujiuchi et al.
patent: 5151822 (1992-09-01), Hekker et al.
patent: 5194918 (1993-03-01), Kino et al.
Optica Acta, 1968, vol. 15, No. 2, 113-127, K. G. Birch (see appln. page 2).
Data Processing of Image, pp. 268, 269 and Title Page, 1978.
Enomoto Data Processing of Image, Image Electronics Lecture Series 9, Institute of Television, 1978, pp. 268-269.
Boudreau Leo
Olympus Optical Co,. Ltd.
Tran Phuoc
LandOfFree
Edge detecting device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Edge detecting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Edge detecting device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2114102