Lens-free Single Pixel Imaging Based On LCD

Abstract

Abstract: Based on the theory of single pixel imaging by means of Fourier spectrum acquisition, a single-pixel lens-free imaging method is proposed by loading a series of gray stripes on a liquid crystal display (LCD) screen and placing a single pixel photoelectric detector in front of it to receive the light projected by an object. Such an imaging system lowers the hardware requirements, being optically compact and flexible. It is verified theoretically that the nonlinearity between the gray scale of the image loaded on the LCD and the intensity of transmitted light has no effects on reconstructed images. The effectiveness of the imaging method is confirmed experimentally. Experimental results show that by reserving a short period of time for the liquid crystal molecules to response after the mask is loaded, the detector is able to detect the light intensity accurately, reduce background noise and interference of conjugate image, and thus improve the quality of reconstructed image.

Key words: Gamma curve

CLC Number:

O438

References

[1]Cui X, Lee L M, Heng X, et al.Lensless high-resolution on-chip optofluidic microscopes for Caenorhabditis elegans and cell imaging[J].Proceedings of the National Academy of Sciences, 2008, 105(31):10670-10675
[2]Pang S, Cui X, DeModena J, et al.Implementation of a color-capable optofluidic microscope on a RGB CMOS color sensor chip substrate[J].Lab on a Chip, 2010, 10(4):411-414
[3]Zheng G, Lee S A, Antebi Y, et al.The ePetri dish,an on-chip cell imaging platform based on subpixel perspective sweeping microscopy (SPSM)[J].Proceedings of the National Academy of Sciences, 2011, 108(41):16889-16894
[4]Lee S A, Leitao R, Zheng G, et al.Color capable sub-pixel resolving optofluidic microscope and its application to blood cell imaging for malaria diagnosis[J].PloS one, 2011, 6(10):e26127-
[5]Garcia-Sucerquia J, Xu W, Jericho M H, et al.Immersion digital in-line holographic microscopy[J].Optics letters, 2006, 31(9):1211-1213
[6]Bishara W, Sikora U, Mudanyali O, et al.Holographic pixel super-resolution in portable lensless on-chip microscopy using a fiber-optic array[J].Lab on a Chip, 2011, 11(7):1276-1279
[7]Isikman S O, Bishara W, Mavandadi S, et al.Lens-free optical tomographic microscope with a large imaging volume on a chip[J].Proceedings of the National Academy of Sciences, 2011, 108(18):7296-7301
[8]Greenbaum A, Luo W, Su T W, et al.Imaging without lenses: achievements and remaining challenges of wide-field on-chip microscopy[J].Nature methods, 2012, 9(9):889-895
[9]Wei Q, McLeod E, Qi H, et al.On-chip cytometry using plasmonic nanoparticle enhanced lensfree holography[J]. [J].Scientific Reports, 2013, 3:1699-
[10]Tseng D, Mudanyali O, Oztoprak C, et al.Lensfree microscopy on a cellphone[J].Lab on a Chip, 2010, 10(14):1787-1792
[11]Zhang Q, Langrock C, Fejer M M, et al.Waveguide-based single-pixel up-conversion infrared spectrometer[J].Optics express, 2008, 16(24):19557-19561
[12]Ma Y, Grant J, Saha S, et al.Terahertz single pixel imaging based on a Nipkowdisk[J].Optics letters, 2012, 37(9):1484-1486
[13]Withayachumnankul W, Abbott D.Terahertz imaging: Compressing onto a single pixel[J].Nature Photonics, 2014, 8(8):593-594
[14]Donoho D L.Compressed sensing[J].Information Theory, IEEE Transactions on, 2006, 52(4):1289-1306
[15]Duarte M F, Davenport M A, Takhar D, et al.Single-pixel imaging via compressive sampling[J].IEEE Signal Processing Magazine, 2008, 25(2):83-
[16]Pittman T B, Shih Y H, Strekalov D V, et al.Optical imaging by means of two-photon quantum entanglement[J].Physical Review A, 1995, 52(5):R3429-
[17]Strekalov D V, Sergienko A V, Klyshko D N, et al.Observation of two-photon “ghost” interference and diffraction[J].Physical review letters, 1995, 74(18):3600-
[18]Shapiro J H.Computational ghost imaging[J].Physical Review A, 2008, 78(6):061802-
[19]Sun B, Edgar M P, Bowman R, et al.D computational imaging with single-pixel detectors[J].Science, 2013, 340(6134):844-847
[20]Bertolotti J, van Putten E G, Blum C, et al.Non-invasive imaging through opaque scattering layers[J].Nature, 2012, 491(7423):232-234
[21]Durán V, Soldevila F, Irles E, et al.Compressive imaging in scattering media[J].Optics Express, 2015, 23(11):14424-14433
[22]Pei L, Ren-kui Z, Jun-hua H E, et al.吕沛, 周仁魁, 何俊华, 等. 水下单像素成像系统研究[J].光电子激光, 2011, 22(9):1425-1430
[23]Zhang Z, Ma X, Zhong J.Single-pixel imaging by means of Fourier spectrum acquisition[J]. [J]., 2015, :-
[24]Bian L, Suo J, Hu X, et al.Fourier computational ghost imaging using spectral sparsity and conjugation priors[J]. [J].arXiv preprint arXiv:1504.03823, 2015, :-