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- W2352058423 abstract "The Phase Diversity(PD) method in adaptive optical waveforn detection shows great computations when it is used to estimate the wave-front phase aberration and to restore the degraded images,and it is difficult to increase the speed of PD to achieve its real time application on a PC platform.The computational-hardware such as Digital Signal Processor(DSP) and Field Programming Gate Array(FPGA) is a proper way to improve its performance,however,the complex structure of the PD object function and plenty of Fourier transformations in each computation loop influence on its hardware implementation.According to the theory of Zernike polynomial,a method which utilizes polynomial operation instead of Fourier transformations is proposed to modify the PD object function.The modified computing formula and gradient formula are given,by which the computation of the PD object function only depends on the polynomials and the hardware implementation of DSP,FPGA and the parallelism of hardware processing are more easily.A test and an experimental platform are designed,and simulative images and grabbed images for a resolution plate and an optical fiber bundle are restored respectively.Experiment results indicate that the modified PD is still a good means to restore the degraded images,the optical fiber bundle has a higher resolution and its particle profile can be distinguished." @default.
- W2352058423 created "2016-06-24" @default.
- W2352058423 creator A5072425014 @default.
- W2352058423 date "2012-01-01" @default.
- W2352058423 modified "2023-09-26" @default.
- W2352058423 title "Parallelity improvement of object function for phase diversity" @default.
- W2352058423 hasPublicationYear "2012" @default.
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