全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

4-f光学架构频域纯相位调制压缩成像

DOI: 10.13190/j.jbupt.2014.03.003, PP. 13-17

Keywords: 压缩成像,图像超分辨率,频域相位调制,4-f光学架构

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了改善传统的多幅亚像素图像配准融合实现超分辨率的方法面临的配准误差和高成本问题,将压缩传感理论引入超分辨率成像.基于大多数自然图像普遍具有的稀疏表示特性,以经典的4-f光学架构为基础,利用频域中相位比振幅包含更多信息的特点,提出了一种频域纯相位调制压缩成像方法,通过重建算法从单次曝光记录的低维测量值中恢复原高分辨率图像的信息.数值实验结果表明,提出的方法可以有效地实现图像信息的随机调制和高质量重建,是一种有潜力的压缩成像物理实现方案,具有较高的重建信噪比和较少的重建时间,尤其是对于大尺度图像.

References

[1]  Duarte M F, Davenport M A, Takhar D, et al. Single-pixel imaging via compressive sampling[J]. IEEE Transactions on Signal Processing Magazine, 2008, 25(2): 83-91.
[2]  Stern A, Javidi B. Random projections imaging with extended space-bandwidth product[J]. Journal of Display Technology, 2007, 3(3): 315-320.
[3]  张成,杨海蓉,韦穗. 循环-托普利兹块相位掩模可压缩双透镜成像[J]. 光学学报,2011, 31(8):106-111. Zhang Cheng, Yang Hairong, Wei Sui. Compressive double-lens imaging using circulant-toeplitz-block phase mask[J]. Acta Optica Sinica, 2011, 31(8): 106-111.
[4]  Donoho D. Compressed sensing[J]. IEEE Transactions on Information Theory, 2006, 52(4): 1289-1306.
[5]  Candes E J, Romberg J, Tao T. Robust uncertainty principles: exact signal reconstruction from highly incomplete frequency information[J]. IEEE Transactions on Information Theory, 2006, 52(2): 489-509.
[6]  Tropp J A, Laska J N, Duarte M F, et al. Beyond nyquist: efficient sampling of sparse bandlimited signals[J]. IEEE Transactions on Information Theory, 2010, 56(1): 520-544.
[7]  Romberg J. Compressive sensing by random convolution[J]. SIAM Journal on Imaging Sciences, 2009, 2(4): 1098-1128.
[8]  Bioucas D J M, Figueiredo M. A new TwIST: two-step iterative shrinkage/thresholding algorithms for image restoration[J]. IEEE Transactions on Image Processing, 2007, 16(12): 2992-3004.
[9]  Figueiredo M, Nowak R D, Wright S J. Gradient projection for sparse reconstruction: application to compressed sensing and other inverse problems[J]. IEEE Journal of Selected Topics in Signal Processing, 2007, 1(4): 586-597.
[10]  Yin Wotao, Morgan S, Yang Junfeng, et al. Practical compressive sensing with toeplitz and circulant matrices[EB/OL]. Visual Communications and Image Processing 2010. International Society for Optics and Photonics, 2010[2012-10-21]. http://spie. org/Publications/Proceedings/Paper/10. 1117/12. 863527.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133