Abstract: Line segment is important feature. Line detection based on chain code detection is proposed. First of all, chain codes are tracked in an edge image. The corners in chain codes are detected according to the estimated curvature, and chain codes are split at the corners. Chain codes of line segments are recognized, and only the chain codes which represent line segments are kept. Parameters of line segments are estimated according to the chain codes, and the broken parts of line segments are linked based on the linking criterions. Experiments with real images show that the method is effective to detecting line.

Key words: Image recognition, Line detection, Chain code detection

摘要： 直线是图像的重要特征，直线参数是进行图像识别和直线段三维重建的重要基础数据。基于链码检测的直线段的检测方法分为4步：以边缘图像为基础进行链码检测；根据链码估计曲率，检测链码角点，并在角点处拆分链码；通过链码直方图检测直线链码；对直线链码进行直线参数估计，并根据连接准则，进行直线连接。实验证明，该方法可以对直线段进行有效的检测。

关键词: 图像识别, 直线检测, 链码检测

CLC Number: 

• TP391.41