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公开(公告)号：US3872433A
公开(公告)日：1975-03-18
申请号：US36788173
申请日：1973-06-07
CPC分类号： G06K9/03 , G06K9/2054 , G06K2209/01
摘要： An optical character recognition system is arranged to process format conditioning documents which designate the locations of data fields on data documents to be read. Those portions of the data documents outside the data fields which are designated by the conditioning document are rendered invisible to the system, thereby permitting the system to process only data which may be located in the midst of other printed matter. A fine line adjustment capability permits the system to reposition the document as necessary to locate a data field which is not located precisely as had been indicated by the format conditioning document. The system is thus automatically adaptable to any data format without requiring specialized programming. The system samples successive vertical slices of data characters being optically scanned and reassembles the slices electronically for purposes of recognition. The position of each slice is analyzed in order to predict the position, relative to the photo-sensitive array, of the next slice. This permits reliable system adaptation to a data line which is fully or partially skewed relative to its document page. Failure to recognize one or more data characters during scan of a line results in successive automatic re-scans of that line with automatic increase of detection sensitivity during each re-scan to permit characters of relatively light print to be recognized.
摘要翻译： 光学字符识别系统被布置成处理指定要读取的数据文档上的数据字段的位置的格式调整文档。 由调节文件指定的数据字段之外的数据文档的那些部分对于系统变得不可见，从而允许系统仅处理可能位于其他打印物中的数据。 细线调整功能允许系统根据需要重新定位文档，以定位不如格式调节文档所指示的精确位置的数据字段。 因此，该系统可以自动适应任何数据格式，而不需要专门的编程。 系统对光学扫描的数据字符的连续垂直切片进行采样，并以电子方式重新组合切片用于识别。 分析每个切片的位置，以便预测下一切片相对于光敏阵列的位置。 这允许对相对于其文档页面完全或部分偏斜的数据线的可靠系统适配。 在行扫描期间无法识别一个或多个数据字符导致该行的连续自动重新扫描，并且在每次重新扫描期间自动增加检测灵敏度，以允许识别相对较轻的打印的字符。
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公开(公告)号：US3812459A
公开(公告)日：1974-05-21
申请号：US23289372
申请日：1972-03-08
发明人： MAC NEIL J , WILLEY R
CPC分类号： G06K9/2009
摘要： An optical arrangement for character recognition systems utilizes the same optical path for both illuminating the text and projecting the text onto an array of photosensitive elements. A low power laser beam of cross-section slightly larger than a unit vertical slice of a text character is projected by a prism through a lens arrangement to a scanning mirror which reflects the beam to sequentially illuminate individual text character slices. Each illuminated slice is reflected by the mirror through the lens arrangement onto a linear array of photosensitive elements. The focus of the lens arrangement is varied in synchronization with the mirror scan to correct for changes in the distance between the mirror and text characters at different scan angles. The page is oriented at a slight angle relative to the scan axis of the mirror to eliminate specular reflection. The resultant skew created in the reflected characters as a function of scan angle is compensated for by rotating the photosensitive array about the optical path axis as a function of mirror scan angle.
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3.发明授权Visual display of unrecognizable characters in optical character recognition machines 失效在光学识别机器上可视化显示不可修改的字符
公开(公告)号：US3848228A
公开(公告)日：1974-11-12
申请号：US36788073
申请日：1973-06-07
发明人： MACNEILL J
CPC分类号： G06K9/033
摘要： A selectively operable optical path is provided to permit visual display of a character that cannot be recognized by an optical character recognition machine. Visual display of such characters permits visual observation of the enlarged character by an operator who, if he recognizes the character can insert it by a keyboard mechanism and if he cannot recognize it he may reject the document as unintelligible.
摘要翻译： 提供了一种选择性可操作的光路以允许视觉显示由光学字符识别机不能被识别的字符。 这样的字符的视觉显示允许操作者对放大字符的视觉观察，如果他识别出角色可以通过键盘机构插入，并且如果他不能识别它，则他可以拒绝该文档是不可理解的。
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