• Infrared and Laser Engineering
  • Vol. 44, Issue S, 73 (2015)
Wang Zhengzhou1、2、3、*, Hu Bingliang3, Yin Qinye1, Cao Shikang3, Li Dongjian3, and Li Hongguang3
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    DOI: Cite this Article
    Wang Zhengzhou, Hu Bingliang, Yin Qinye, Cao Shikang, Li Dongjian, Li Hongguang. Method for measuring laser spot center based on multi-dimensional reconstruction in integrated diagnostic system[J]. Infrared and Laser Engineering, 2015, 44(S): 73 Copy Citation Text show less

    Abstract

    In order to enhance the weak and asymmetrical image of small laser spot and suppress the noise information, eliminate unstable laser spot effect on the calculation results, a new method was proposed in this paper. Firstly, a multi-dimensional image cube was constructed by many images captured in different time, the primary information was concentrated in the first dimensional image, the correlation of each dimensional image was removed. Secondly, the first dimensional image was divided into laser spot and background by Kmeans method, the classified image was processed by mathematical morphology, the edge of largest spot was searched as edge of small laser spot. Finally, the least square method of circle fitting was used to calculate small laser spot center. The experimental results show that the method can improve the accurate rate on checking the weak and asymmetrical laser spot, the binarylaser spot area obtained by new method is 97.15% of ideal spot area, the error of small laser spot center and radius is less than 2 pixels, and realize the accuracy measure of small laser spot in the integrated diagnostic system.
    Wang Zhengzhou, Hu Bingliang, Yin Qinye, Cao Shikang, Li Dongjian, Li Hongguang. Method for measuring laser spot center based on multi-dimensional reconstruction in integrated diagnostic system[J]. Infrared and Laser Engineering, 2015, 44(S): 73
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