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HANSHAN LI1,* , XIAOQIAN ZHANG1, XUEWEI ZHANG1, XIANGYAN MENG1
Aiming at the difficulty of obtaining warhead fragment spatial position information, this paper combines the four-dimensional information of the light field camera, and proposes the warhead fragment spatial position analysis and reconstruction modeling based on the micro lens array imaging mechanism. According to the relation of the main lens plane, micro lens array plane and imaging sensor plane of the light field camera, combining with the light propagation characteristics formed by the warhead fragments in the internal structure, the reconstruction model of the light field imaging warhead fragments and the calculation function of the warhead fragments on the refocused image surface is derived. Based on the relationship between the coordinates of the main lens plane and the imaging sensor coordinates of the light field camera, the analytical model of the warhead fragment spatial position is established by inversion. Through the simulation test, the imaging images of simulative multiple warhead fragments are collected, according to the inherent parameters of the light field camera and the theoretical model established, it is verified that the theoretical method can calculate the warhead fragment spatial position.
Light field camera, Micro lens array, Warhead fragment, Refocus, Inversion.
HANSHAN LI, XIAOQIAN ZHANG, XUEWEI ZHANG, XIANGYAN MENG, Warhead fragment spatial position acquisition and reconstruction method based on micro lens array imaging mechanism, Optoelectronics and Advanced Materials - Rapid Communications, 15, 7-8, July-August 2021, pp.357-363 (2021).
Submitted at: March 17, 2021
Accepted at: Aug. 16, 2021
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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