A Segmentation and Recognition Method of Hypervelocity Impact Damage Detection Image

Abstract

The invention discloses a segmentation recognition method of an ultra-high-speed impact damage detection image, which includes: extracting the typical transient response of each type of defect; obtaining an infrared reconstruction image; combining a multi-objective optimization algorithm with a segmentation model to perform a background region analysis on the infrared reconstruction image Separation from the defect area; under the guidance of the three purposes of noise removal, detail preservation and edge preservation, the infrared image segmentation function is constructed; the multi-objective optimization algorithm combined with the segmentation model is used to achieve one-time segmentation of the specimen defect in the infrared reconstruction image, according to Preferences are used to adjust the weight vector; the pixels are classified into categories to obtain the final segmented image. The invention uses the multi-objective optimization theory to segment the impact damage area in the infrared reconstruction image, and constructs an objective function to improve the accuracy of the segmentation for the noise problem and the edge blur problem, the defect detection rate is high, the false detection rate is reduced, and the Reconstruct the damage defect area in the image to facilitate the quantitative study of complex hypervelocity impact damage.

Description

technical field [0001] The invention belongs to the technical field of spacecraft maintenance support and on-orbit risk assessment. More specifically, the invention relates to a method for segmenting and recognizing ultra-high-speed impact damage detection images. Background technique [0002] During launch and in-orbit operation, spacecraft are extremely vulnerable to accidental impacts from various tiny objects, such as space junk fragments, tiny meteoroids, and peeled off coatings. In particular, the ever-increasing space junk debris is the most harmful to on-orbit spaceflight. Because the tiny debris has a very high impact speed (usually reaching several kilometers per second or even tens of kilometers per second), it is easy to cause various types of debris on the surface of the spacecraft. Hypervelocity impact damage, such as perforation, impact crater, spallation, spalling, etc., causes the structure of the spacecraft to be damaged or the function of the component to ...

AI Technical Summary

Problems solved by technology

If only the segmentation model is used, the weight coefficients corresponding to the objective functions to achieve the three segmentation performances when forming the segmentation function are to be determined, and continuous debugging is required to determine the weight coefficients to control the balance between each objective function, and the computational efficiency and universality of the algorithm The performance is low, and the segmentation quality of the final infrared reconstructed image cannot be guaranteed

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