Detection of Overlapped Bullet Holes Based on Improved Otsu's Thresholding Method

被引：0
|
作者：
Song Y. [1 ,2 ]
Wang Y. [3 ]
Du B. [3 ]
Wang J. [1 ,2 ]
Dong X. [1 ]
机构：
[1] School of Electronic and Information Engineering, Suzhou University of Science and Technology, Suzhou
[2] Science and Technology on Near-Surface Detection Laboratory, Wuxi
[3] Baicheng Ordnance Test Center of China, Jilin
来源：
Binggong Xuebao/Acta Armamentarii | 2022年 / 43卷 / 04期
关键词：
Image processing; Improved otsu method; Minimum bounding rectangle; Overlapped bullet holes detection;
D O I：
10.12382/bgxb.2021.0201
中图分类号：
学科分类号：
摘要：
The traditional automatic target-scoring system has a low detection rate for the overlapped bullet holes on the target plate hit by successive projectiles. Generally, the automatic target-scoringing system based on image processing recognizes the overlapped target holes as one bullet hole, which leads to a high missed detection rate. To solve this problem, a new method based on Otsu is presented. The bullet holes recognition method based on improved Otsu method is employed to segment the overlapped bullet hole image and its background, and then the overlapped bullet hole region is obtained from the segmented image by the two-pass algorithm. The minimum bounding rectangle method is used to position the center of the two bullet holes in the overlapped bullet hole region. The results show that, compared with the traditional Hough transform, the proposed method can be used to effectively position the center of the two bullet holes and calculate the center coordinates. The measured error of bullet holes is not more than 3 pixel for the overlapped holes of which the degree of overlap is less than 88.73%. The improved method is capable of reducing the computational time and improving the positioning accuracy of bullet hole center with a low computational complexity, which plays a significant role in improving the detection accuracy of target hole. © 2022, Editorial Board of Acta Armamentarii. All right reserved.
引用
收藏
页码：924 / 930
页数：6
相关论文
共 15 条
  • [1] WU J P, SONG P, HAO C B, Et al., Simulation of measuring method for space-time distributed parameters of multiple projectiles, Acta Armamentarii, 36, 10, pp. 1967-1974, (2015)
  • [2] CHEN R, NI J P., Optimization method of light-screen-array structure parameters of photoelectric target based on orthogonal test, Acta Armamentarii, 38, 11, pp. 2234-2239, (2017)
  • [3] ZHANG B, LI J L, ZHAO D E, Et al., Signal processing of laser screen fragments velocity measurement based on wavelet transform and correlation analysis, Acta Armamentarii, 37, 3, pp. 489-495, (2016)
  • [4] YIN Q., Research on automatic target scoring system based on image processing technology, (2017)
  • [5] WIDAYAKA P D, KUSUMA H, ATTAMIMI M., Automatic shooting scoring system based on image processing[J], Journal of Physics: Conference Series, 1201, 1, (2019)
  • [6] HU J, ZHI K Y, CHEN X J., Design and implementation of automatic target application software for image processing based on LabVIEW, Journal of Ordnance Equipment Engineering, 40, 11, pp. 83-86, (2019)
  • [7] YU Z., Research on bullet hole positioning system based on image processing technology, (2016)
  • [8] ZHOU Y X, ZHOU J, DENG Y B, Et al., Chest bitmap bullet identification based on edge feature and HSI color feature, Computer Engineering and Applications, 51, 24, pp. 190-194, (2015)
  • [9] WU J H, LIU J., Development status of testing the parameters of warhead fragment in the static explosive field, Journal of Ordnance Equipment Engineering, 40, 10, pp. 104-110, (2019)
  • [10] NI J P, ZHANG W F, ZHOU P., Identifying bullet holes on paperboard with projection method, Journal of Applied Optics, 31, 1, pp. 60-64, (2010)
12