Developmental Research of Drawing Image Processor for Translation, Automatic Transformation and Fair Printing

本研究的目的是开发一种绘图图像处理器，它可以将绘图图像中包含的单词或短语从一种语言翻译成另一种语言，根据人类对图像大小，线宽，字体大小等的要求。绘图图像首先从图像扫描仪馈送到数据流处理器。数据流处理器提取诸如连通区域、垂直或水平线的特征。然后，将特征从数据流处理器发送到主处理器。主处理器识别字符串并提取连接点。根据规范来变换输入绘图图像的这些结构数据。然后，使用变换后的结构数据和输入图像来生成输出图像。该图形图象处理器包括图形图象的分割、标号和图形图象的翻译、变换、编辑和打印等功能。在1986年，我们在以下几点上改进和加强了处理器到实用水平。1.在结构分析中，当字符与线条接触或线条不连续导致图像质量下降时，经常会出现错误。针对这一问题，通过注入“线”、“字”、“点线”、“箭头”等相关知识，构建了知识库系统.开发了图形软件，通过使用CAD技术来提高输出图形图像的质量。该软件实现了印刷的公平性.研究了低质量图纸中汉字的子模式识别问题。

The purpose of this research is to develop a drawing image processor which can translate words or phrases contained in drawing images from one language to another, according to human specification of image size, line width,character font sixe, etc. Drawing images are, at first, fed from a image scanner to data flow processor. The data flow processor extracts the features such as connected regions, vertical or horizontal lines. The features are,then, transmitted from the data flow processor to a host processor. The host processor identifies the character string and extracts the connecting points. These structural data of input drawing images are transformed according to the specification. Then, an output image is generated using the transformed structural data and the input image. In this drawing image processor, segmentation and labeling of constituents and translation, transformation, editing and fair printing of drawing images are included.At 1985, we developed the first version of the drawing image processor. At the year 1986, we improved and intensified the processor to a practical level in the following points.1. Error occurs frequently in structural analysis when image quality decreases due to contact of characters to lines, or discontinuity of lines. To solve this problem, knowledge base system was constructed by injecting the knowledge concerning "line", "character", "dotted line" and "arrow".2. Graphics software was developed to increase the quality of output drawing images by using CAD techniques. Fair printing is obtained by this software.3. Subpattern recognition of chinese character in the low quality drawing is studied.