Automatic estimation of the focusing reconstruction distance of recorded object in digital holography

Hongzhen Jiang; Xu Liu; Yong Liu; Dong Li; Zhu Chen; Fanglan Zheng; Xiaoyu Yang; Bo Chen

doi:10.1117/12.2241949

27 September 2016 Automatic estimation of the focusing reconstruction distance of recorded object in digital holography

Hongzhen Jiang, Xu Liu, Yong Liu, Dong Li, Zhu Chen, Fanglan Zheng, Xiaoyu Yang, Bo Chen

Proceedings Volume 9684, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment; 96843Y (2016) https://doi.org/10.1117/12.2241949
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China

Abstract

In this paper, a method which can effectively achieve the accurate estimation of the focusing reconstruction distance of recorded object in digital holography (DH) is proposed. By analyzing the variance variety of the reconstructed intensity images corresponding to different reconstruction distances, the accurate focusing reconstruction distance of the recorded object is obtained and thus the legible reconstructed image in-focus is acquired. The effectiveness of the proposed method is successfully validated with both pure phase objects and pure amplitude objects in experiment. This method will have great potential application foreword in digital holographic measurement field.

Citation Download Citation

Hongzhen Jiang, Xu Liu, Yong Liu, Dong Li, Zhu Chen, Fanglan Zheng, Xiaoyu Yang, and Bo Chen "Automatic estimation of the focusing reconstruction distance of recorded object in digital holography", Proc. SPIE 9684, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment, 96843Y (27 September 2016); https://doi.org/10.1117/12.2241949

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KEYWORDS

3D image reconstruction

Digital holography

Holograms

Charge-coupled devices

Image processing

Diffraction

Digital recording

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