吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (4): 1197-1202.doi: 10.13229/j.cnki.jdxbgxb201404045

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Quick extracting of marking cross points and accurate locating algorithm by single-point-mode matching

LI Xue-jun, YANG Sheng, LI Zhen-ju, YANG A-hua, LIU Tao   

  1. Department of Information Equipment, The Academy of Equipment of PLA, Beijing 101416, China
  • Received:2013-01-14 Online:2014-07-01 Published:2014-07-01

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Abstract:

The key problems in current methods of automatic extracting of marking cross points are analyzed. Then, a quick detection of the cross points based on the intersection of the barycenters and the accumulation volume is proposed, and a accurate locating algorithm by single-point-mode matching is designed to ensure the accuracy. Experimental results show that the algorithm is robust to noise, rotation, resampling error, illumination variations, a certain degree of view variation and perspective distortion. The locating accuracy of 0.01 to 0.05 pixels is obtained.

Key words: information processing technology, feature extracting, marking point recognition, point feature location, feature matching, photogrammetry

CLC Number: 

  • TN917

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