A Method to Recognize Integral Lines for Scanned Image of Engineering Drawings
Zongying Ou · Jisuanji gongcheng · 2000
The paper presents a method to recognize integral lines in scanned image of engineering drawings based on a primitive regions adjacency graph. The graph is used to represent geometry property and topology relationship of the image. Analyzing geometry and topology features of Primitive regions, we can get the intersection regions which imply adjacency among them. After identifying a line region as a seed line, the seed line grows by searching the smallest error one of the same line regions. Then, the integral line is recognized. The method can realize the integral description for lines when lines intersect and are tangent with arcs or circles, so this improves global vectorization.