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    • 95. 发明授权
    • Method of and device for identifying direction of characters in image block
    • 用于识别图像块中字符方向的方法和装置
    • US08787674B2
    • 2014-07-22
    • US13525736
    • 2012-06-18
    • Jun SunSatoshi Naoi
    • Jun SunSatoshi Naoi
    • G06K9/18
    • G06K9/3208G06K9/344G06K2209/01
    • The embodiments disclose a method of and a device for identifying direction of characters in image block. The method includes: performing optical character recognition processing on the image block by assuming various directions as assumed character directions to obtain sub image blocks, recognized characters and correctness measures in each assumed direction; in sub image blocks in the assumed directions with a 180° mutual relation, searching for a minimum matching pair; when there is one sub image block in each assumed direction in a minimum matching pair and recognized characters belonging to the minimum matching pair are the same rotation invariant character or belong to the same rotation invariant character pair, adjusting their correctness measures to the same; calculating an accumulative correctness measure in each assumed direction based on the adjusted results; and identifying the direction of the characters in the image block according to the accumulative correctness measures.
    • 实施例公开了用于识别图像块中的字符的方向的装置和方法。 该方法包括:通过假设各种方向作为假定的字符方向对图像块执行光学字符识别处理,以在每个假定方向上获得子图像块,识别的字符和正确性度量; 在具有180°相互关系的假设方向上的子图像块中,搜索最小匹配对; 当在最小匹配对中的每个假定方向上存在一个子图像块时,属于最小匹配对的识别字符是相同的旋转不变字符或属于相同的旋转不变字符对,将它们的正确性度量调整到相同; 根据调整结果计算每个假设方向的累积正确度; 并根据累积的正确性度量来识别图像块中的字符的方向。