中国激光, 2014, 41 (4): 0409003, 网络出版: 2014-03-14   

基于内插与外推的数字全息分辨率增强方法

A Resolution Enhancement Method Based on Interpolation and Extrapolation in Digital Holography
作者单位
南京大学电子科学与工程学院, 江苏 南京 210093
摘要
为了提高数字全息再现图像的分辨率,分析了增强图像分辨率的典型方法,提出了同时采用图像内插与外推的数字全息分辨率改进方法。对采集的全息图运用图像算法进行向内插值与向外填充,在全息面和物面之间采用角谱方法进行双向衍射迭代。通过该方法可以实现全息图的内插与外推,内插过程可以增加全息图空间采样频率而外推过程扩大了全息图数值孔径。同时,讨论了内插与外推的限制因素,并将新的改进方法与单独采用外推或内插进行了比较,模拟和实验结果证明,运用该方法可以明显改善再现图像分辨质量。
Abstract
In order to improve the resolution of reconstruction image in digital holography, the traditional resolution enhancement methods are studied. Here, a resolution improvement method based on extrapolation add with interpolation is proposed. The recorded hologram is interpolated and extra-padded using image algorithm. An iterative process is applied by diffracting the wave-field between hologram plane and object plane. The interpolated and extrapolated hologram can be retrieved by this method. The interpolation process can increase the special sample frequency while the extrapolation can enlarge the numerical aperture. Simultaneously, limiting factors of interpolation and extrapolation are also discussed. We have compared the new method with interpolation or extrapolartion, respectively. The simulation and experimental results show that the resolution of reconstructed image is improved significantly by using this proposed method.
参考文献

[1] U Schnars, W Juptner. Direct recording of holograms by a CCD target and numerical reconstruction[J]. Appl Opt, 1994, 33(2): 179-181.

[2] 欧阳丽婷, 王大勇, 赵洁, 等. 老鼠大脑海马区神经元活细胞的数字全息相衬成像实验研究[J]. 中国激光, 2013, 40(9): 0909001.

    Ouyang Liting, Wang Dayong, Zhao Jie, et al.. Experimental study on the phase-contrast imaging of the living hippocampal neuron cells by digital holographic microscopy[J]. Chinese J Lasers, 2013, 40(9): 0909001.

[3] 李光勇, 杨岩. 数字全息粒子图像测速技术应用于旋转流场测量的研究[J]. 中国激光, 2012, 39(6): 0609001.

    Li Guangyong, Yang Yan. Digital holography particle image velocimetry applied for measurement of the rotating flow fields[J]. Chinese J Lasers, 2012, 39(6): 0609001.

[4] L Xu, X Peng, J Miao, et al.. Studies of digital microscopic holography with applications to microstructure testing[J]. Appl Opt, 2001, 40(28): 5046-5051.

[5] 曾雅楠, 汪飞, 雷海, 等. 双波长数字显微像面全息术测量微结构表面形貌[J]. 光学学报, 2013, 33(10): 1009001.

    Zeng Yanan, Wang Fei, Lei Hai, et al.. Surface profile measurement of microstructures based on dual-wavelength digital microscopic image-plane holography[J]. Acta Optica Sinica, 2013, 33(10): 1009001.

[6] Y Hao, A Asundi. Resolution analysis of a digital holography system[J]. Appl Opt, 2011, 50(2): 183-193.

[7] A Stern, B Javidi. Analysis of practical sampling and reconstruction from Fresnel fields[J]. Opt Eng, 2004, 43(1): 239-250.

[8] N Akhter, G Min, J W Kim, et al.. A comparative study of reconstruction algorithms in digital holography[J]. Optik, 2013, 124(17): 2955-2958.

[9] L Yu, M K Kim. Pixel resolution control in numerical reconstruction of digital holography[J]. Opt Lett, 2006, 31(7): 897-899.

[10] 范琦, 赵建林, 向强, 等. 改善数字全息显微术分辨率的几种方法[J]. 光电子·激光, 2005, 16(2): 226-230.

    Fan Qi, Zhao Jianlin, Xiang Qiang, et al.. Methods of improving resolution of digital holographic microscopy[J]. Journal of Optoelectronics·Laser, 2005, 16(2): 226-230.

[11] 钟丽云, 张以谟, 吕晓旭. 合成孔径数字全息的记录、再现及实现[J]. 中国激光, 2004, 31(10): 1207-1211.

    Zhong Liyun, Zhang Yimo, Lü Xiaoxu. Recording and reconstruction of synthetic aperture digital holography[J]. Chinese J Lasers, 2004, 31(10): 1207-1211.

[12] 姜宏振, 赵建林, 邸江磊, 等. 合成孔径数字无透镜傅里叶变换全息图的分幅再现[J]. 光学学报, 2009, 29(12): 3304-3309.

    Jiang Hongzhen, Zhao Jianlin, Di Jianglei, et al.. Reconstruction of synthetic aperture digital lensless Fourier transform hologram by use of the screen-division method[J]. Acta Optica Sinica, 2009, 29(12): 3304-3309.

[13] J Di, J Zhao, H Jiang, et al.. High resolution digital holographic microscopy with a wide field of view based on a synthetic aperture technique and use of linear CCD scanning[J]. Appl Opt, 2008, 47(30): 5654-5659.

[14] V Micó, C Ferreira, J García. Surpassing digital holography limits by lensless object scanning holography[J]. Opt Express, 2012, 20(9): 9382-9395.

[15] J Ma, C Yuan, G Situ, et al.. Resolution enhancement in digital holographic microscopy with structured illumination[J]. Chin Opt Lett, 2013, 11(9): 090901.

[16] D Claus, M Fritzsche, D Iliescu, et al.. High-resolution digital holography utilized by the sub-pixel sampling method[J]. Appl Opt, 2011, 50(24): 4711-4719.

[17] W Bishara, T -W Su, A F Coskun, et al.. Lensfree on-chip microscopy over a wide field-of-view using pixel super-resolution[J]. Opt Express, 2010, 18(11): 11181-11191.

[18] T Latychevskaia, H -W Fink. Resolution enhancement in digital holography by self-extrapolation of holograms[J]. Opt Express, 2013, 21(6): 7726-7733.

[19] J R Fienup. Reconstruction of an object from the modulus of its Fourier transform[J]. Opt Lett, 1978, 3(1): 27-29.

[20] 薛凯, 李琦, 王骐. 基于小波变换的太赫兹数字全息成像自动聚焦算法[J]. 中国激光, 2012, 39(s1): s111005.

    Xue Kai, Li Qi, Wang Qi. Wavelet-based autofocus algorithm for terahertz digital holographic imaging[J]. Chinese J Lasers, 2012, 39(s1): s111005.

夏好广, 张佳辰, 纪晓丽, 闫锋, 曹汛. 基于内插与外推的数字全息分辨率增强方法[J]. 中国激光, 2014, 41(4): 0409003. Xia Haoguang, Zhang Jiachen, Ji Xiaoli, Yan Feng, Cao Xun. A Resolution Enhancement Method Based on Interpolation and Extrapolation in Digital Holography[J]. Chinese Journal of Lasers, 2014, 41(4): 0409003.

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