As a criterion used to describe the performance of an optical system, optical transfer function (OTF) can be calculated by autocorrelation of pupil function, dual Fourier transform, Zernike polynomial fitting, and so on. A fast OTF calculation method based on dual Fourier transform and graphics processing unit (GPU), in which the redundant computations of point spread function (PSF) and OTF are removed, is proposed in this paper. For an optical system with the pupil function of 512 9 512 pixels, the OTF computation is implemented on GPU platform. The result shows that the proposed method using the 128 9 128 pixels central regions of the PSF enhances the computational efficiency of about 4.88 times than the method using standard CUFFT.
WOS标题词:
Science & Technology
; Physical Sciences
类目[WOS]:
Optics
研究领域[WOS]:
Optics
关键词[WOS]:
SPHERICAL-ABERRATION
; RESPONSE FUNCTION
; FREQUENCY RESPONSE
; OPTIMUM APODIZERS
; SYSTEM
; PERFORMANCE
; LENSES
; COMA
1.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China 2.Univ Elect Sci & Technol China, Sch Optoelect Informat, Chengdu 610054, Peoples R China 3.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation:
Zhang, Quan,Bao, Hua,Rao, Changhui,et al. A fast calculation method of optical transfer function using GPU parallel computation[J]. OPTICAL REVIEW,2015,22(6):903-910.
