Closed-loop control method of self-adapting optical distorting lens based on GPU calculation

Abstract

The invention relates to a closed-loop control process for a self-adaption optical deformable mirror based on GPU computation, comprising following steps: deformable mirror shaping the optical wave; Hartmann detector receiving the shaped optical wave and obtaining the Hartmann image; Hartmann image inputting into the video memory of the video card through the calculator memory; GPU dividing the Hartmann image in the video memory and computing the grey scale centre of gravity in each division; computing the wave tilt vector according to the Hartmann image and grey scale centre of gravity thereon in respective division; computing the zernike multinomial coefficient according to the wave tilt vector; computing the dominant vector of the deformable mirror actuator according to the zernike multinomial coefficient; controlling the deformable mirror by the dominant vector of the deformable mirror actuator. The invention performs the whole computation in the GPU based on the prior system, achieves the control frequency which is difficult to control by the CPU, is convenient for test, debug, upgrade, maintenance and secondary development.

Description

technical field [0001] The invention relates to a method for dimming control of a visible light camera, in particular to a closed-loop control method applied to an adaptive optics deformable mirror. Background technique [0002] The closed-loop control of the deformable mirror of adaptive optics needs to reach 1000HZ because the control frequency needs to reach 1000HZ. At present, it is difficult to meet the requirements with the conventional computing CPU. The algorithm is difficult to expand, and the development cycle is long and the cost is high. During the algorithm debugging process, the algorithm must be frequently modified, so using FPGA to make a board will become very expensive and inefficient. Invention content: [0003] The purpose of the present invention is to solve the above-mentioned technical problems existing in the closed-loop control method of the deformable mirror of adaptive optics at present, propose a kind of closed-loop control method of the adaptiv...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned technical problems existing in the closed-loop control method of the deformable mirror of adaptive optics at present, propose a kind of closed-loop control method of the adaptive optics deformable mirror based on GPU calculation, both can overcome the high expense of the past method , low efficiency, and convenient for testing, debugging, upgrading, maintenance, and secondary development

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