Segmentation of text styles

Details Segmentation of text styles Segmentation of text styles

1994-12-28

1996-10-29

Boudreau, Leo

Image analysis

Image transformation or preprocessing

Selecting a portion of an image

382176, 382205, 382257, G06K 936

Patent

active

055704352

ABSTRACT:
A method and apparatus for differentiating and extracting handwritten annotations and machine printed text in an image. The method provides for the use of morphological operations, preferably at reduced scale, to eliminate for example, the handwritten annotations from an image. A separation mask is produced that, for example, converts all the image pixels corresponding to machine printed text, and none of the image pixels corresponding to handwritten or handprinted annotations. The separation mask is used in conjunction with the original image to produce separate handwritten annotations and machine printed text images. The invention also provides a method and apparatus for identifying the location of specialized type styles such as bold and italic is disclosed. The method erodes a binary image utilizing structuring elements which provide a relatively large number of hits in regions containing the specialized type styles. The destination image resulting from the erosion is coalesced so as to form masks which may be used to extract portions of the original image containing the specialized type styles.

REFERENCES:
patent: 3611291 (1971-10-01), Frank
patent: 3634822 (1972-01-01), Chow
patent: 3709525 (1973-01-01), Frank
patent: 4167728 (1979-09-01), Sternberg
patent: 4334241 (1982-06-01), Kashioka et al.
patent: 4395698 (1983-07-01), Sternberg et al.
patent: 4408342 (1983-10-01), Grabowski et al.
patent: 4499499 (1985-02-01), Brickman et al.
patent: 4516262 (1985-05-01), Sakurai
patent: 4516266 (1985-05-01), Christopher et al.
patent: 4547895 (1985-10-01), Mita et al.
patent: 4588211 (1986-05-01), Greene
patent: 4644148 (1987-01-01), Greene
patent: 4644585 (1987-02-01), Crimmins et al.
patent: 4665554 (1987-05-01), Sternberg
patent: 4710965 (1987-12-01), Kobayashi
patent: 4724309 (1988-02-01), Greene
patent: 4741046 (1988-04-01), Matsunawa et al.
patent: 4742373 (1988-05-01), Nakatani
patent: 4757551 (1988-07-01), Kobayashi et al.
patent: 4809348 (1989-02-01), Meyer et al.
patent: 4817169 (1989-03-01), Peppers et al.
patent: 4821333 (1989-04-01), Gillies
patent: 4910787 (1990-03-01), Umeda et al.
patent: 4933979 (1990-06-01), Suzuki et al.
patent: 4959868 (1990-09-01), Tanioka
patent: 5048109 (1991-09-01), Bloomberg et al.
patent: 5065437 (1991-11-01), Bloomberg
patent: 5140650 (1992-08-01), Casey et al.
patent: 5202933 (1993-04-01), Bloomberg
Proceedings SPIE Conference Image Algebra and Morphological Image Processing, vol. 1350, 10-12 Jul. 1990, San Diego, USA, pp. 116-128 D. Bloomberg and P. Maragos "Generalized Hit-Miss Operations.".
Postl, "Detection of Linear Oblique Structures and Skew Scan in Digitized Documents," Int'l. Conf. on Pattern Recog., (1986).
Haralick, et al., "Image Analysis Using Mathematical Morphology," IEEE, vol. PAMI-9, No. 4, Jul. 1987, pp. 532-550.
Wong, et al., "Document Analysis System," IBM J. Res. Develop. (1982) 26:647-656.
Suenaga, et al., "A Facsimile Based Manuscript Layout & Editing System by Auxiliary Mark Recognition," IEEE (1980) 2:856-858.
Suenaga, "A Facsimile Based Text Editor Using Handwritten Mark Recognition," Proc. of 6th Int'l Joint Conf. on Artificial Intelligence, Tokyo, Aug. 20-23, 1979, vol. 2, pp. 856-858.
USSN 07/449,624 entitled "Indentification and Segmentation of Finely Textured and Solid Regions of Binary Images".
USSN 07/448,193 entitled "Indentification, Characterization, and Segmentation of Halftone or Stippled Regions of Binary Images".
USSN 07/447,985 entitled "Detection of Highlighted Regions".
USSN 07/449,626 entitled "Segmentation of Text and Graphics".
USSN 07/449,627 entitled "Image Reduction/Enlargement Technique".
USSN 07/449,203 entitled "Image Registration".
USSN 07/448,774 entitled "Method and Apparatus for Identification of Doucument Skew".

Affiliated with

Also associated with

Rating

Segmentation of text styles 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 styles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Segmentation of text styles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1791514