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    • 9. 发明授权
    • System for detecting and identifying substantially linear horizontal and
vertical lines of engineering drawings
    • 用于检测和识别工程图纸基本线性的水平和垂直线的系统
    • US5923782A
    • 1999-07-13
    • US691116
    • 1996-08-01
    • Atul K. ChhabraVishal MisraSurekha Surya
    • Atul K. ChhabraVishal MisraSurekha Surya
    • G06K9/20G06K9/34G06K9/36G06K9/40G06K9/46
    • G06K9/00449
    • There is provided a method for detecting horizontal and vertical lines of an encoded run length image to identify cells of the image that are formed by the lines. Initially, the method comprises the steps of filtering excess details, such as text, from the image and grouping a portion of the image for analysis. A top profile of the image is generated and, then, points along the top profile are determined where substantial changes in the profile position occur. A horizontal section of the top profile which corresponds to a line completely visible from the top is then extracted from between the points. By repeating the above steps, each horizontal line of the image is detected and extracted from the image. In addition, in order to detect the vertical lines of the image, the image is simply rotated 90.degree. and processed with the vertical lines being positioned horizontally. By identifying the horizontal and vertical lines of the image, the cells of the original image may be identified, and the contents of each cell may be processed by optical character recognition techniques and the like.
    • 提供了一种用于检测编码游程长度图像的水平和垂直线以识别由线形成的图像的单元的方法。 最初,该方法包括以下步骤:从图像中过滤诸如文本的多余细节,并对图像的一部分进行分组以进行分析。 生成图像的顶部轮廓,然后确定轮廓位置发生实质变化时沿着顶部轮廓的点。 然后从两个点之间提取对应于从顶部完全可见的线的顶部轮廓的水平截面。 通过重复上述步骤,从图像中检测和提取图像的每条水平线。 另外,为了检测图像的垂直线,将图像简单地旋转90度,并且将垂直线水平放置处理。 通过识别图像的水平和垂直线,可以识别原始图像的单元,并且可以通过光学字符识别技术等来处理每个单元的内容。