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1. 发明授权

US4763119A Image processing system for area filling of graphics 失效
标题翻译：图像区域填充图像处理系统
公开(公告)号：US4763119A
公开(公告)日：1988-08-09
申请号：US853802
申请日：1986-04-18
申请人： Shigeru Matsubara , Tohru Mori , Toshiroh Tabata
发明人： Shigeru Matsubara , Tohru Mori , Toshiroh Tabata
IPC分类号： G06F3/153 , G06T11/40 , G09G1/14
CPC分类号： G06T11/40
摘要： An area fill technique for graphic images is disclosed wherein the contour lines constituting an image are given in a series of line segments or a series of vectors, and horizontal line segments are ignored. Each line segment other than the horizontal ones is specified by the coordinate addresses for the start and end points in one direction, that is, from top to bottom or from bottom to top. Each is then converted into approximate pixels in the X-Y coordinate system, and stored in a random access work memory. The pixels of each line segment are stored in the work memory according to a rule whereby each line segment is represented by one pixel per horizontal line, and is written by taking exclusive OR of its pixels, excluding the start point, with read pixel data at corresponding coordinate addresses in the work memory. Thus, an even number of contour line pixels exist in each horizontal line in the work memory, and, area fill can be realized by scanning each horizontal line in the work memory and turning on pixel memory cells from an odd numbered contour line pixel to an even numbered contour line pixel. This technique makes it possible to easily perform area fill even for complicated images.
摘要翻译：公开了一种用于图形图像的区域填充技术，其中构成图像的轮廓线以一系列线段或一系列向量给出，并且忽略水平线段。除水平线之外的每个线段由一个方向的起点和终点的坐标地址，即从上到下或从下到上指定。然后将每个图像转换成X-Y坐标系中的近似像素，并存储在随机存取工作存储器中。每个线段的像素根据规则被存储在工作存储器中，每个线段由每个水平线上的一个像素表示，并且通过将除了开始点之外的其像素的异或与其中的像素数据进行写入来写入相应的坐标地址在工作存储器中。因此，在工作存储器中的每条水平线上都存在偶数轮廓线像素，并且可以通过扫描工作存储器中的每条水平线并将像素存储单元从奇数轮廓线像素接通到偶数轮廓线像素。这种技术使得即使对于复杂的图像也可以容易地执行区域填充。

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