Invention Grant
- Patent Title: Between-segment discontinuity reduction for text vectorization using dominant point classification
- Patent Title (中): 使用优点分类的文本向量化的段间不连续性减少
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Application No.: US12498387Application Date: 2009-07-07
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Publication No.: US08441684B2Publication Date: 2013-05-14
- Inventor: Zhigang Fan , Francis Kapo Tse , Bingfeng Zhou , Yadong Mu , He Tao
- Applicant: Zhigang Fan , Francis Kapo Tse , Bingfeng Zhou , Yadong Mu , He Tao
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: Fleit Gibbons Gutman Bongini & Bianco P.L.
- Agent Philip E. Blair
- Main IPC: H04N1/387
- IPC: H04N1/387 ; G06K15/00 ; G06K9/34

Abstract:
What is disclosed is a novel system and method for text vectorization for bitmap images with reduced artificial discontinuities. Dominant points are identified in a bitmap character image. An initial curve is fitted to edge points of the character image in a vicinity of a selected dominant point. A set of boundary parameters in a vicinity of the selected dominant point are estimated based upon the initial curve. The selected dominant point is then classified as one of a sharp dominant point and a smooth dominant point based upon the boundary parameters or alternatively upon predefined classifications produced by an optical character recognition process. Curves are fitted between the selected dominant point and adjacent dominant points. The fitted curves maintain the estimated boundary parameters in the vicinity of smooth dominant points. A vectorized representation of the text character image based upon the fitted curves is produced as output.
Public/Granted literature
- US20110007334A1 BETWEEN-SEGMENT DISCONTINUITY REDUCTION FOR TEXT VECTORIZATION USING DOMINANT POINT CLASSIFICATION Public/Granted day:2011-01-13
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