外文题目: Coherent imaging by using defocus grating
作者: Ma, Haotong; Xie, Zongliang; qi, Bo; Zhang, Guowen; Ren, Ge; Wang, Sanhong
刊名: Proc.SPIE
来源图书: EMERGING IMAGING AND SENSING TECHNOLOGIES
年: 2016 卷: 9992 文章编号：99920I
会议名称: Conference on Emerging Imaging and Sensing Technologies
英文关键词:
Coherent imaging; phase retrieval; Gerchberg-Saxton algorithm; Stochastic parallel gradient descent algorithm
PHASE-DIVERSITY
英文摘要:
We propose and demonstrate an coherent imaging technique by using defocus grating. For the imaging system, the defocus grating combined with lens with short focal length is used to realize multiplane imaging on the lens' focal plane, simultaneously. Based on these multiplane images, Gerchberg-Saxton (GS) algorithm is used to reconstruct the complex amplitude distribution of the input imaging beam. By using computational imaging and digital wavefront distortion correction with stochastic parallel gradient descent (SPGD) algorithm, this technology can be used for joint estimation of both pupil aberrations and an high resolution image of the object, successfully.


文献类型: 会议论文
正文语种: English
收录类别: ISTP
DOI: 10.1117/12.2242019


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