An improved length variable angle chain code algorithm and its application to dock identification
ZHANG Yongmei1,3, YANG Fei2, XU Jing1
1. Computer College, North China University of Technology, Beijing 100144, China;
2. School of Electronic Information Engineering, North China University of Technology, Beijing 100144, China;
3 Guangdong Key Laboratory of Popular High Performance Computers, Shenzhen Key Laboratory of Service Computing and Applications, Shenzhen 518060, China
This paper proposed an improved length variable angle chain code algorithm for the angle information loss of curve approximation and used this algorithm in dock detection. The new algorithm changes the rules in the selection of the end point and retains the advantages of length variable angle chain code; when occupying the same storage quantity, it can achieve better effect on retaining the corner of larger curvature. This method leaves out the small floatation of curve and it has a positive effect on angle feature and linear feature extraction. The authors used the method to extract the feature of image for dock detection, extracted the geometric feature based on the coastline, and marked out the dock areas combining the geometric feature with the existing knowledge. Experiments show this method can effectively extract right angle and parallel features.
张永梅, 杨飞, 许静. 改进的变长夹角链码算法及在码头识别中的应用[J]. 国土资源遥感, 2016, 28(4): 164-169.
ZHANG Yongmei, YANG Fei, XU Jing. An improved length variable angle chain code algorithm and its application to dock identification. REMOTE SENSING FOR LAND & RESOURCES, 2016, 28(4): 164-169.
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2016, Vol. 28 
