Chinese Optics Letters, 2009, 7 (12): 1072, Published Online: Dec. 18, 2009
Phase correction and resolution improvement of digital holographic image in numerical reconstruction with angular multiplexing Download: 841次
数字全息术 角分复用 相位倾斜 相位校正 分辨率 090.1995 Digital holography 100.2000 Digital image processing 100.3010 Image reconstruction techniques
Abstract
A phase correction method is presented to remove the phase slope of the sub-holograms caused by the multi-direction illumination on object in digital holography. To improve the resolution of the reconstructed holographic images, two sub-holograms are recorded by using angular multiplexing and their phase slope parameter is obtained by theoretical analysis. Introducing a phase correction parameter to this phase slope, the ideal complex reconstructed image can be obtained by superposing the reconstructed object wave fields of the two sub-holograms. Experimental results demonstrate that the resolution of the reconstructed image can be effectively enhanced.
Xiaobo Yan, Jianlin Zhao, Jianglei Di, Hongzhen Jiang, Weiwei Sun. Phase correction and resolution improvement of digital holographic image in numerical reconstruction with angular multiplexing[J]. Chinese Optics Letters, 2009, 7(12): 1072.