线状图形矢量化中的行段分析与后处理

针对目前工程图纸识别中存在的几项难点技术,提出基于行程编码的矢量化方法, 对小弯度直线的纠正问题、特征线段的延伸与合并算法进行了研究.同时使用图像局部形态 分析的方法,直接在原图像上进行识别,保证了图像信息的完整性和可检测性.该项研究结果 在建筑工程图纸的自动识别及自动计算中得到了较好的应用.

GRAPH SEGMENT ANALYSIS AND POST-PROCESSING OF LINE GRAPHICS IN ENGINEERING DRAWINGS VECTORIZATION

This paper proposed a vectorization method based on the run length coding for recognition of engineering drawings. We studied the aspects of the small bend line correction problem as well as the combining and extending algorithm of the vectorization line segments. At the same time, image morphology analysis method was also used in the research, which ensured the information integrity and graphic testability when directly using the original scanning image of the engineering drawings. The achievements have been used for automatical recognition and calculation of architecture engineering drawings.