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US5923790A Method and apparatus for detecting vertical direction of document 失效
检测文件垂直方向的方法和装置

Method and apparatus for detecting vertical direction of document
摘要:
The present invention provides a method and an apparatus for reliably detecting the upside and downside vertical direction of an image, such as characters on a document. The method involves judging the upside and downside vertical direction of the characters in each line, and specifying the upside and downside vertical direction of the characters on the entire image on the basis of the vertical directions detected line by line.
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