Image analysis – Histogram processing – For setting a threshold
Patent
1984-01-31
1985-10-01
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 56, G06K 950
Patent
active
045450676
ABSTRACT:
A process for the automatic recognition of an image (I) on the basis of a corresponding reference image, including obtaining, by optoelectronic detection means (C), signals representing both the image to be recognized and the reference image, digitizing (in CAN) and recording the respective signals in a memory (M), using a processing unit (UT) to determine the coordinates of respective characteristic contour lines in the image to be recognized and the reference image, segmenting the respective contour lines and coding the segments (Si), attributing to each segment a pair of values (.rho..sub.i, .theta..sub.i) relating to its length (.rho..sub.i) and its angle (.theta..sub.i) compared with a reference direction, and comparing the respective pairs of values while seeking coincidence between the large segments of the contour to be recognized and the reference contour. The process has application to the recognition of shapes, particularly in robotics.
REFERENCES:
patent: 3273124 (1966-09-01), Greanias
patent: 3609685 (1971-09-01), Deutsch
patent: 4375654 (1983-03-01), Evans et al.
Pattern Recognition, vol. 13, No. 3 (1981), K. Ikeda et al., "On-Line Recognition of Hand-Written Characters Utilizing Positional and Stroke Vector Sequences," pp. 191-206.
IEEE International Convention Record, vol. 11, Part 4 (Mar. 25-28, 1963), F. Kuhl, "Classification and Recognition of Hand-Printed Characters," pp. 75-90, 93.
Proceedings of the Fifth International Conference on Pattern Recognition, vol. 1 of 2 (Dec. 1-4, 1980), W. Dana Wasson, "A Preprocessor for Hand-Printed Character Recognition," pp. 703-707.
The Post Office Electrical Engineers Journal, vol. 60, No. 2 (Jul. 1967), E. S. Deutsch, "Computer Simulation of a Character-Recognition Machine, Part 2-Information Recoding and Character Recognition," pp. 104-109.
IBM Technical Disclosure Bulletin, vol. 11, No. 10 (Mar. 1969), M. F. Levy, "Data Comparing Method," p. 1331.
Proceedings of the National Electronics Conference, vol. 18 (1962), H. Freeman, "On the Digital Computer Classification of Geometric Line Patterns," pp. 312-320.
Dupeyrat Benoit
Juvin Didier
Boudreau Leo H.
Commissariat a l''Energie Atomique
Mancuso Joseph
LandOfFree
Process for automatic image recognition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for automatic image recognition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for automatic image recognition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1446345