ARTICLES
JIA Jian-Cheng, ZHOU Cheng-Hu, DIAO Qian-Jun, MO Qiang
.
1999, 1(2):
57-62.
The paper mainly outlines the recognition method of point marks in color scanning maps and its implemented conception of software model and frame. The method is based on the theory of pattern recognition. On color scanning map, the main features of point marks include color, shape and size. Before mark recognition, the mark pattern base, in which the most important features of patterns are predefined, should be created. The main flux of recognition is described as below:firstly, pixel by pixel and line by line, the color of pixels on maps is matched to the colors of patterns in the pattern base, the objects marked on maps are divided from background. Then, after the edge lines of an object are traced and extracted, the shapes and sizes of the objects, which are the other features of the marks, can be calculated. In the end, these features of the objects are matched to the predefined features of the patterns in the base. If the main features of an object are nearly of alike in a range to those of the patterns in base, this object can be classified into this class of the pattern. Finally, the paper uses the application system of Electricity Information Intensity Mark Recognition as a case to profound the designing and developing method of Mark Recognition on practical case.