Image analysis – Histogram processing – For setting a threshold
Patent
1991-11-19
1995-01-24
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 25, 382 40, G06K 936
Patent
active
053848632
ABSTRACT:
Methods and apparatus of processing an undecoded document image in a digital computer to modify the document image so as to emphasize semantically significant portions without first converting the document image to character codes. The document image is segmented into image units, and morphological image characteristics of the image units are evaluated to identify significant image units for emphasis. In one embodiment, the significant image units are emphasized by modifying at least one shape characteristic of the significant image units using at least one uniform morphological bitmap operation applied to the entire image unit bitmaps corresponding to the significant image units.
REFERENCES:
patent: 4581710 (1986-04-01), Hasselmeier
patent: 4610025 (1986-09-01), Blum et al.
patent: 4750209 (1988-06-01), Shimura et al.
patent: 4908716 (1990-03-01), Sakano
patent: 4985930 (1991-01-01), Takeda et al.
patent: 4998285 (1991-03-01), Suzuki et al.
patent: 5018083 (1991-05-01), Watanabe et al.
patent: 5018217 (1991-05-01), Yoshida et al.
patent: 5029224 (1991-07-01), Fujisawa
patent: 5048096 (1991-09-01), Beato
patent: 5048109 (1991-09-01), Bloomberg et al.
patent: 5077668 (1991-12-01), Doi
patent: 5138465 (1992-08-01), Ng et al.
patent: 5289169 (1994-02-01), Corfield et al.
D. S. Bloomberg, "Multiresolution Morphological Approach to Document Image Analysis," first International Conference on Document Analysis and Recognition ICDAR 91, 30 Sep.-2 Oct. 1991, St. Malo, FR, pp. 963-971.
Y. Suenaga, "Some Techniques for Document and Image Preparation," System and Computers in Japan, vol. 17, No. 3, 1986, New York, pp. 35-46.
M. Hase et al., "A method for Extracting Marked Regions from Document Images," Systems & Computers in Japan, vol. 18, No. 8, 1987, New York, pp. 77-87.
Kopec G. E. et al., "Editing Images of Text," EP90 Proceedings of the International Conference on Electronic Publishing, Document Manipulation and Typography, Sep. 1990, Gaithersburg, pp. 207-220.
Baird et al., "Image Segmentation by Shape-Directed Covers," Proceedings 10th International Conf. on Pattern Recog., vol. 1, 1990, pp. 820-825.
Fisher et al., "A Rule-Based System for Document Image Segmentation", Proceedings 10th Int. Conf. on Pattern Recog., vol. 1, 1990, pp. 567-572.
Bloomberg Dan S.
Cass Todd A.
Halvorsen Per-Kristian
Huttenlocher Daniel P.
Kaplan Ronald M.
Boudreau Leo H.
Johns Andrew W.
Xerox Corporation
LandOfFree
Methods and apparatus for automatic modification of semantically does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for automatic modification of semantically, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for automatic modification of semantically will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1473506