Method of tracing contour and a system therefor
    91.
    发明授权
    Method of tracing contour and a system therefor 失效
    跟踪轮廓的方法及其系统

    公开(公告)号:US4956869A

    公开(公告)日:1990-09-11

    申请号:US154378

    申请日:1988-02-10

    摘要: A system for tracing contour to prepare contour coordinates by tracing contour lines of a figure from an image that consists of a set of a plurality of lines, comprising a memory stored in advance from a basic pattern related to figure contour lines of positions of image transistion points between the neighboring two lines. An image transition point of a line is detected and another image transition point of a line that precedes the above line is detected, too. A pattern of image transistion points of the above two lines is extracted based upon the basic pattern. The thus extracted basic patterns are then integrated and are converted into contour coordinates.

    摘要翻译: 一种用于跟踪轮廓以通过从由多条线组成的图像跟踪图形的轮廓线来准备轮廓坐标的系统,包括从与图像位移的图形轮廓线有关的基本模式预先存储的存储器 相邻两条线之间的点。 检测线的图像转换点,并检测到在上述线之前的线的另一图像转变点。 基于基本图案提取上述两行的图像转移点的图案。 然后将如此提取的基本图案整合并转换为轮廓坐标。

    Management system of graphic data
    92.
    发明授权
    Management system of graphic data 失效
    图形数据管理系统

    公开(公告)号:US4803477A

    公开(公告)日:1989-02-07

    申请号:US942633

    申请日:1986-12-17

    CPC分类号: G06T9/20 G06T11/203

    摘要: A graphic data management system including a segment table in which several kinds of graphic data placed in a multi-dimensional space are stored correspondingly to graphic element numbers, and an index table in which, for each of the cell numbers provided when the multi-dimensional coordinate system is partitioned into predetermined cells, and all the graphic element numbers at least a part of which included in a cell are stored. The graphic data management system carries out the search, addition and deletion referring to a segment table and the index table. The index table includes a cell pointer table in which pointers indicative of the addresses where the graphic element numbers are stored are listed for each cell number, a cell table in which the graphic element number and concatenation pointers which indicate the storing addresses of the subsequent graphic element numbers are listed as pairs, and a space management pointer indicative of the address of a free space area in the cell table.

    摘要翻译: 一种图形数据管理系统,包括其中放置在多维空间中的多种图形数据对应于图形元素编号的段表,以及索引表,其中,对于当多维空间中提供的每个单元格数 坐标系被划分为预定的单元,并且存储包括在单元中的至少一部分的所有图形单元编号。 图形数据管理系统执行搜索,添加和删除,参考段表和索引表。 索引表包括单元指针表,其中针对每个单元号列出了指示存储图形单元编号的地址的指针,其中表示后续图形的存储地址的图形单元编号和级联指针的单元表 元素号被列为对,以及空间管理指针,其指示小区表中的自由空间区域的地址。