Mr. Jianfeng Tang Profile

Jianfeng Tang

at Army Official Academy

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Proceedings Article | 25 October 2016 Paper

Laser interference effect evaluation method based on character of laser-spot and image feature

Jianfeng Tang, Xiaolin Luo, Lingxia Wu

Proceedings Volume 10158, 1015804 (2016) https://doi.org/10.1117/12.2243794

KEYWORDS: Image processing, Charge-coupled devices

Read Abstract +

Evaluating the laser interference effect to CCD objectively and accurately has great research value. Starting from the change of the image’s feature before and after interference, meanwhile, considering the influence of the laser-spot distribution character on the masking degree of the image feature information, a laser interference effect evaluation method based on character of laser-spot and image feature was proposed. It reflected the laser-spot distribution character using the distance between the center of the laser-spot and center of the target. It reflected the change of the global image feature using the changes of image’s sparse coefficient matrix, which was obtained by the SSIM-inspired orthogonal matching pursuit (OMP) sparse coding algorithm. What’s more, the assessment method reflected the change of the local image feature using the changes of the image’s edge sharpness, which could be obtained by the change of the image’s gradient magnitude. Taken together, the laser interference effect can be evaluated accurately. In terms of the laser interference experiment results, the proposed method shows good rationality and feasibility under the disturbing condition of different laser powers, and it can also overcome the inaccuracy caused by the change of the laser-spot position, realizing the evaluation of the laser interference effect objectively and accurately.

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