The Multi-target Impacting Coordinate Test Based On Image Analysis Cuptured By Two Intersectant Linear Arrays

In the modern weapon shooting range test,to evaluate the weapon firing dispersion,we need to accurately measure the impecting coordinates of every projectile.Aiming at the test requirement of high-frequency and multi-target landing coordinates,a method of multi-target landing coordinates image acquisition and analysis is proposed in this paper,which is based on image analysis of two-linear array sequence and target feature extraction under single-trigger mode.The main contents of this paper are as follows:1)Using the intersection measurement principle of two linear array cameras,by analyzing the influence of target and system parameters on imaging,a setting method of collecting system parameters under single trigger mode is given,and reliable multi-target landing coordinate images are obtained.2)By comparing several high-frequency and single-target image,the noise types and characteristics of the image are obtained,and the appropriate noise suppression methods are proposed for different types of noise,and the gray image which can accurately extract the projectile image is obtained.3)The position characteristics and rules of the multi-target image are studied.According to the image characteristics of the sticky projectile,the image of the sticky projectile is segmented.The centroid method it uses to obtain the coordinates of the central pixel of the projectile as the feature points,and the corresponding imaging positions of a group of targets in two linear array cameras are found,and the multi-target projectile landing coordinates are obtained.4)The laboratory steel bead simulation experiment is designed.The test results are compared with the data obtained from the paper target.The target coordinate error of five consecutive targets are less than ±3mm,which indicated that the system setting method and image processing analysis algorithm in the paper were effective and feasible.