Improved automatic target-scoring bullet hole identification method and system

• Main Authors: SHAO PENG, ZHANG YAN, XU YANAN, ZHAO MINGJIAN, CHEN GUANGHUI, CHEN FENG, ZHAO CHENXU
• Format: Patent
• Language: Chinese; English
• Published: 03.01.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention discloses an improved automatic target-scoring bullet hole identification method and system. The method comprises the following steps: acquiring an image to be identified; performing chromaticity space conversion on the to-be-identified image, and converting the to-be-identified image from a BGR space to a gray space; converting the image to be identified from the BGR space to the HSV space; carrying out image binarization processing on the image of the gray space; performing black area extraction on the image of the HSV space to obtain a first bullet hole area image; performing OR operation on the binarized image and the first bullet hole area image to obtain a second bullet hole area image; performing contour searching on the second bullet hole area image to obtain a bullet hole area contour in the image; the minimum circumcircle of each contour is calculated, and the circle center and the radius of each minimum circumcircle are obtained; and on the basis of the radius of the minimum circumcir