Optical character reader with tangent detection fo

专利名称：Optical character reader with tangent

detection for detecting tilt of image data

发明人：Yutaka Nakashima申请号：US09210278申请日：19981211公开号：US06175664B1公开日：20010116

专利附图：

摘要：A character reader for optically reading and entering characters. The characterreader including: an input apparatus for photoelectrically reading characters as an image,creating image data formed by black pixels lying on a white surface, and entering the

image data; a tangent detector for generating at least two line segments, each linesegment connecting two black pixels within a character string of the image data; and a tiltdecider for choosing a representative line segment from the at least two line segmentswhich is representative of the tilt of the character string, on the basis that the distancebetween two black pixels specifying the representative line segment is longer than thedistance between two black pixels specifying another line segment.

申请人：NEC CORPORATION

代理机构：Scully, Scott, Murphy & Presser

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