Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (26): 4817-4820.doi: 10.3969/j.issn.1673-8225.2011.26.017

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Hand radiographs preprocessing and improved k-cosine algorithm in location method for phalangeal key points

He Xiang-qian1,2, Ran Long-ke1,2, Tan Peng-cheng1, Jin Jing1   

  1. 1College of Basic Medicine, 2Laboratory of Forensic and Biology Information Technology, Chongqing Medical University, Chongqing  400016, China
  • Received:2011-05-08 Revised:2011-06-08 Online:2011-06-25 Published:2011-06-25
  • Contact: Ran Long-ke, Master, Lecturer, 1College of Basic Medicine, 2Laboratory of Forensic and Biology Information Technology, Chongqing Medical University, Chongqing 400016, China Ranlk@sina.com
  • About author:He Xiang-qian★, Master, Associate professor, 1College of Basic Medicine, 2Laboratory of Forensic and Biology Information Technology, Chongqing Medical University, Chongqing 400016, China hexiangqian@gmail.com
  • Supported by:

    Science Research Plan of Yuzhong District, Chongqing City*

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Abstract:

BACKGROUND: During the bone age assessment, binarization threshold selection is one of the most troubled factors, which is directly related to two-value image and accuracy location of the phalanx key points.
OBJECTIVE: In order to solve the problems for binarization threshold selection and overcome the too slow speed for locating the key points of phalanx, to reach fast and accurate location for them.
METHODS: In this paper, image preprocessing technique is presented and the second threshold algorithm on the base of OSTU threshold algorithm is also put forward respectively in the analysis of the skeletal age X-ray pictures. And the threshold obtained through this method is used to get binarization from the skeletal age X-ray pictures. Since k-cosine algorithm is very slow to locate the phalanx key points, an improved k-cosine algorithm is put forward to locate the phalanx key points, which is fast and accurate.
RESULTS AND CONCLUSION: The experimental results show that the proposed method used to locate phalanx key points can reach satisfactory results in accuracy and speed.

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