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An approach for sensing underwater particles using digital holographic imaging
Author(s): Chao Liu; Xiaoping Wang; Yingtian Hu; Ming Tang; Zheng Shi
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Paper Abstract

The purpose of this paper is to use digital holographic imaging to capture the hologram of the underwater particles. Digital holography includes two steps: wavefront recording and wavefront reconstruction. In the experiments of the underwater particles, some technique issues, such as the principle of digital holography, zero-order item suppressing and reconstruction algorithm are discussed. The complex amplitude of the underwater particles is reconstructed using numerical methods based on the Kirchhoff-Fresnel integral formula. In this case, it enables reconstruction of the object wavefield in a plane at a distance d from hologram. This novel method for imaging the underwater particles using digital holography is an extremely valuable technique for the study of underwater particles fields as it has many advantages such as large depth of field, no focusing, high resolution and has the ability to record the wavefront information of all particles in the entire volume. Finally, this paper demonstrates it is possible for digital holographic imaging setup with less complexity to image underwater particles according to our laboratory results.

Paper Details

Date Published: 12 December 2018
PDF: 7 pages
Proc. SPIE 10850, Ocean Optics and Information Technology, 108500S (12 December 2018); doi: 10.1117/12.2505602
Show Author Affiliations
Chao Liu, Zhejiang Univ. (China)
Xiaoping Wang, Zhejiang Univ. (China)
Yingtian Hu, Zhejiang Univ. (China)
Ming Tang, Zhejiang Univ. (China)
Zheng Shi, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 10850:
Ocean Optics and Information Technology
Xuelong Li; Lixin Wu; Jianquan Yao; Hao Yin; Renhe Zhang; Zhongliang Zhu, Editor(s)

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