发明授权
US5729635A OCR image free-processing method for image enhancement of scanned
documents
失效
OCR图像自由处理方法,用于扫描文档的图像增强
- 专利标题: OCR image free-processing method for image enhancement of scanned documents
- 专利标题(中): OCR图像自由处理方法,用于扫描文档的图像增强
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申请号: US733208申请日: 1996-10-17
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公开(公告)号: US5729635A公开(公告)日: 1998-03-17
- 发明人: Bruce B. Fast , Dana R. Allen
- 申请人: Bruce B. Fast , Dana R. Allen
- 申请人地址: CA Burlingame
- 专利权人: TMSSequoia
- 当前专利权人: TMSSequoia
- 当前专利权人地址: CA Burlingame
- 主分类号: G06K9/32
- IPC分类号: G06K9/32 ; G06K9/34 ; G06K9/36 ; G06K9/40 ; G06T9/00 ; H04N1/38 ; H04N1/387 ; H04N1/409
摘要:
A method is provided for identifying, correcting, modifying and reporting imperfections and features in pixel images that prevent or hinder proper OCR (Optical Character Recognition) and other document imaging processes. One embodiment of this invention provides that run length compressed images can be analyzed and corrected directly for improved performance. Major steps included in this invention for the enhancement of images for OCR and document imaging are: The detection of undesired printed matter and the deletion of undesired printed matter. Detection of undesired printed matter includes successive generation of entries into an array listing of undesired printed matter to be deleted. Deletion of undesired printed matter follows in a separate step for all types of undesired printed matter.