Warhead fragment perforation and pit detection method

Abstract

The invention provides a warhead fragment perforation and pit detection method, which belongs to the technical field of image processing, and comprises the steps of performing geometric correction andactual physical size recovery on an equivalent target plate image acquired after static explosion of a warhead based on a homography matrix of photography transformation; linearly segmenting the equivalent target plate based on vertexes and boundaries; smoothing the equivalent target plate image based on guided filtering; generating a hyperboloid threshold value by adopting an image gradient in combination with changes of flash lamp illumination at different positions on the equivalent target plate; segmenting a fragment perforation region with bright gray scale and a fragment pit region withdark gray scale on the equivalent target plate by utilizing a hyperboloid threshold value; taking fragment perforation and pit areas as seed points of gray similarity to perform area growth; and removing the pseudo target region by using fragment perforation and pit area and shape feature criteria. According to the calculation method, fragment perforation and pit state information can be stored,fragment perforation and pit areas can be accurately segmented, and fragment perforation and pit detection can be conveniently and quickly realized.

Description

technical field [0001] The invention belongs to the technical field of image processing, relates to the technical field of image processing of warhead fragments hitting an equivalent target plate, in particular to a detection method for warhead fragment punctures and pits. Background technique [0002] Obtaining accurate parameters of the fragment field under static explosion conditions is the basis for constructing the power situation of the warhead, and it is also the prerequisite for analyzing the dynamic and explosive state of the fragment field. Before the static explosion, arrange equivalent target plates at a certain distance and angle around the warhead. Due to the uncertainty of the fragment dispersion characteristics, the number, position, perforation and pit area of ​​each equivalent target plate after the explosion are distributed by fragments. It is completely different, and it is necessary to quickly obtain and count the situation of each equivalent target boar...

AI Technical Summary

Problems solved by technology

[0003] At present, the detection of fragment perforation on the equivalent target plate is mainly through manual detection, but in general, the explosion radius of the warhead is large, the number of equivalent target plates is large, and the number of fragment perforation is also large, so the workload of fragment perforation detection is relatively large

At the same time, when the situation of fragment perforation is complicated, the judgment standards are not uniform, and multiple people are required to confirm on-site

Moreover, the status information of the fragment perforation is not saved, and the specific location of the fragment perforation cannot be reproduced, which is not conducive to subsequent verification, thus affecting the objectivity, accuracy and reliability of the detection

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