Image analysis – Histogram processing – For setting a threshold
Patent
1989-12-08
1993-04-13
Razavi, Michael T.
Image analysis
Histogram processing
For setting a threshold
382 27, 382 55, 382 33, 358462, G06K 946
Patent
active
052029336
ABSTRACT:
A method and apparatus for differentiating and extracting text and line graphics in an image. The method provides for the use of morphological operations, preferably at reduced scale, to eliminate vertical rules and lines from an image followed by the elimination of horizontal rules and lines, remaining text regions are then solidified to produce a separation mask. The mask is used in conjunction with the original image to produce separate text and graphics images.
REFERENCES:
patent: 4196453 (1980-04-01), Warren
patent: 4411015 (1983-10-01), Scherl et al.
patent: 4414685 (1983-11-01), Sternberg
patent: 4503556 (1985-03-01), Scherl et al.
patent: 4504972 (1985-03-01), Scherl et al.
patent: 4513442 (1985-04-01), Scherl
patent: 4577235 (1986-03-01), Kannapell et al.
patent: 4644392 (1987-02-01), Yamada
patent: 4700400 (1987-10-01), Ross
patent: 4724488 (1988-02-01), Van Daele et al.
patent: 4742558 (1988-05-01), Ishibashi et al.
patent: 4750209 (1988-06-01), Shimura et al.
patent: 4786976 (1988-11-01), Takao et al.
patent: 4791679 (1988-12-01), Barski et al.
patent: 4805031 (1989-02-01), Powell
patent: 4817186 (1989-03-01), Goolsbey et al.
patent: 4821333 (1989-04-01), Gillies
patent: 4823194 (1989-04-01), Mishima et al.
patent: 4827330 (1989-05-01), Walsh et al.
patent: 4827529 (1989-05-01), Peppers et al.
patent: 4837847 (1989-06-01), Shirasaka et al.
patent: 4858018 (1989-08-01), Tanaka
Wong et al., "Document Analysis System," IBM J. Res. Development (1982) 26:647-656.
Sternberg, "Biomedical Image Processing," IEEE (1983) pp. 22-34.
Maragos, "Tutorial on Advances in Morphological Image Processing and Analysis," Optical Engineering (1987) 26:623-632.
Haralick et al., "Image Analysis Using Mathematical Morphology," IEEE, vol. PAMI-9, No. 4, Jul. 1987, pp. 532-550.
Jung Yon
Razavi Michael T.
Xerox Corporation
LandOfFree
Segmentation of text and graphics does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Segmentation of text and graphics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Segmentation of text and graphics will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1160711