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Real-time blind deconvolution of retinal images in adaptive optics scanning laser ophthalmoscopy
Li, Hao1,2,3; Lu, Jing1,2,3; Shi, Guohua1,2,3; Zhang, Yudong1,2
Source PublicationOPTICS COMMUNICATIONS
Volume284Issue:13Pages:3258-3263
2011-06-15
Language英语
Indexed BySCI
WOS IDWOS:000291179200014
SubtypeArticle
AbstractWith the use of adaptive optics (AO), the ocular aberrations can be compensated to get high-resolution image of living human retina. However, the wavefront correction is not perfect due to the wavefront measure error and hardware restrictions. Thus, it is necessary to use a deconvolution algorithm to recover the retinal images. In this paper, a blind deconvolution technique called Incremental Wiener filter is used to restore the adaptive optics confocal scanning laser ophthalmoscope (AOSLO) images. The point-spread function (PSF) measured by wavefront sensor is only used as an initial value of our algorithm. We also realize the Incremental Wiener filter on graphics processing unit (GPU) in real-time. When the image size is 512 x 480 pixels, six iterations of our algorithm only spend about 10 ms. Retinal blood vessels as well as cells in retinal images are restored by our algorithm, and the PSFs are also revised. Retinal images with and without adaptive optics are both restored. The results show that Incremental Wiener filter reduces the noises and improve the image quality. (C) 2011 Elsevier B.V. All rights reserved.
KeywordAdaptive Optics Scanning Laser Ophthalmoscopy Image Recovery Incremental Wiener Filter Graphics Processing Unit
WOS KeywordHUMAN EYE
WOS Research AreaOptics
WOS SubjectOptics
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/3419
Collection光电技术研究所被WoS收录文章
Affiliation1.Chinese Acad Sci, Lab Adapt Opt, Inst Opt & Elect, Chengdu 610209, Peoples R China
2.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Li, Hao,Lu, Jing,Shi, Guohua,et al. Real-time blind deconvolution of retinal images in adaptive optics scanning laser ophthalmoscopy[J]. OPTICS COMMUNICATIONS,2011,284(13):3258-3263.
APA Li, Hao,Lu, Jing,Shi, Guohua,&Zhang, Yudong.(2011).Real-time blind deconvolution of retinal images in adaptive optics scanning laser ophthalmoscopy.OPTICS COMMUNICATIONS,284(13),3258-3263.
MLA Li, Hao,et al."Real-time blind deconvolution of retinal images in adaptive optics scanning laser ophthalmoscopy".OPTICS COMMUNICATIONS 284.13(2011):3258-3263.
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