工程图扫描图象预处理方法的研究

Study on for Enginerring Drawing Scanning Image PreProcessing Method

提出了一种针对工程图扫描图象的预处理方法 ,用锐化滤波、自适应二值化、基于行相邻图的二值图象改进算法等方法逐步改善扫描图象质量 ,以进一步提高后期图形识别的精度 ,其中基于行相邻图的二值图象改进算法较现有常规算法在速度和质量上有较大的提高 ,同时为后续图形的识别建立了一种良好的数据结构。

This paper proposes a method for pre-processing scanning images of engineering drawings. Via the method ,such as sharpening filter,adaptive binary,modified algorithm of binary picture based on line adjacency graph, etc.The quality of the scanning images were gradually improved. As a result,the accuracy of the post-graph identification would be improved; in which modified algorithm of binary picture acquired higher processing speed and better quality compared with the present conventional algorithm. A good data structures would be built for the post-graphidentification as well.