申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0166516A2
公开(公告)日:1986-01-02
An automatic picture coding system including a method for converting a bit-map image of the picture to vectors as the picture is being scanned. The bit map is delayed as it is being generated to form a series of tessellations or windows of data. The windows are propagated through a series of neighborhood-logic elements which perform data transformation operations such as growing, smoothing and thinning of the bit-map image. A bit stream output from the neighborhood logic which output includes only line and edge features of the original picture is transferred serially to a microcomputer where the features are partitioned into a plurality of line segments. Each line segment is chain coded and temporarily stored, as it is acquired, in a corresponding one of a plurality of lists, the lists being linked in an order corresponding with the order in which the segments are acquired. When the storage of each chain-coded segment is completed, the segment is converted to vectors and transmitted to a user device for display, storage, or further processing, the lists in which the converted segments were stored being unlinked and deallocated. The process is continued until the entire document has been scanned and converted to vectorial data.
一种自动图片编码系统,包括一种在扫描图片时将图片的位图图像转换为矢量的方法。位图在生成过程中被延迟,以形成一系列网格或数据窗口。这些窗口通过一系列邻域逻辑元件传播,这些邻域逻辑元件执行数据转换操作,如位图图像的增长、平滑和细化。从邻域逻辑中输出的比特流(其输出只包括原始图像的线条和边缘特征)被串行传输到微电脑中,在微电脑中,这些特征被分割成多个线段。每个线段都被链式编码,并在获取时暂时存储在多个列表中的相应列表中,列表的链接顺序与获取线段的顺序一致。每个链编码段存储完成后,该段被转换为矢量,并传输到用户设备进行显示、存储或进一步处理,转换后的段所存储的列表被解除链接并重新分配。这一过程一直持续到整个文件扫描完毕并转换为矢量数据为止。