IOE OpenIR  > 光电技术研究所被WoS收录文章
Redundancy computation analysis and implementation of phase diversity based on GPU
Zhang, Quan1,2,3,4; Bao, Hua1,3; Rao, Changhui1,3; Peng, Zhenming2
Source PublicationOPTICAL REVIEW
Volume22Issue:5Pages:741-752
2015-10-01
Language英语
ISSN1340-6000
DOI10.1007/s10043-015-0120-7
Indexed BySCI
WOS IDWOS:000362491100010
SubtypeArticle
AbstractPhase diversity method is not only used as an image restoration technique, but also as a wavefront sensor. However, its computations have been perceived as being too burdensome to achieve its real-time applications on a desktop computer platform. In this paper, the implementation of the phase diversity algorithm based on graphic processing unit (GPU) is presented. The redundancy computations for the pupil function, point spread function, and optical transfer function are analyzed. Two kinds of implementation methods based on GPU are compared: one is the general method which is accomplished by GPU library CUFFT without precision loss (method-1) and the other one performed by our own custom FFT with little damage of precision considering the redundant calculations (method-2). The results show the cost and gradient functions can be speeded up by method-2 in contrast with the method-1 and the overhead of global memory access by kernel fusion can be reduced. For the image of 256 x 256 with the sampling factor of 3, the results reveal that method-2 achieves speedup of 1.83x compared with method-1 when the central 128 x 128 pixels of the point spread function are used.
KeywordPhase Diversity Adaptive Optics Wavefront Sensing Image Restoration Parallel Computing
WOS KeywordIMAGE-RESTORATION ; PROPAGATION ; TRANSFORM ; SPECKLE
WOS Research AreaOptics
WOS SubjectOptics
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/3714
Collection光电技术研究所被WoS收录文章
Affiliation1.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
GB/T 7714
Zhang, Quan,Bao, Hua,Rao, Changhui,et al. Redundancy computation analysis and implementation of phase diversity based on GPU[J]. OPTICAL REVIEW,2015,22(5):741-752.
APA Zhang, Quan,Bao, Hua,Rao, Changhui,&Peng, Zhenming.(2015).Redundancy computation analysis and implementation of phase diversity based on GPU.OPTICAL REVIEW,22(5),741-752.
MLA Zhang, Quan,et al."Redundancy computation analysis and implementation of phase diversity based on GPU".OPTICAL REVIEW 22.5(2015):741-752.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Quan]'s Articles
[Bao, Hua]'s Articles
[Rao, Changhui]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Quan]'s Articles
[Bao, Hua]'s Articles
[Rao, Changhui]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Quan]'s Articles
[Bao, Hua]'s Articles
[Rao, Changhui]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.