Dynamic imaging through scattering medium under white-light illumination [Invited]

被引：3

作者：

Lei, Junyao ^{[1
]}

Chen, Hui ^{[1
]}

Yuan, Yuan ^{[1
]}

Sun, Yunong ^{[1
]}

Liu, Jianbin ^{[1
]}

Zheng, Huaibin ^{[1
]}

He, Yuchen ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab, Minist Educ, Xian 710049, Peoples R China

来源：

CHINESE OPTICS LETTERS | 2024年 / 22卷 / 06期

基金：

中国国家自然科学基金;

关键词：

scattering imaging; white light illumination; phase retrieval algorithm; FOCUSING LIGHT; PHASE RETRIEVAL; RECONSTRUCTION; TRANSMISSION; ALGORITHMS; DIFFUSER; WAVES; SPACE;

D O I：

10.3788/COL202422.060007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Imaging objects hidden behind turbid media is of great scientific importance and practical value, which has been drawing a lot of attention recently. However, most of the scattering imaging methods rely on a narrow linewidth of light, limiting their application. A mixture of the scattering light from various spectra blurs the detected speckle pattern, bringing difficulty in phase retrieval. Image reconstruction becomes much worse for dynamic objects due to short exposure times. We here investigate non-invasively recovering images of dynamic objects under white-light irradiation with the multi-frame OTF retrieval engine (MORE). By exploiting redundant information from multiple measurements, MORE recovers the phases of the optical-transfer-function (OTF) instead of recovering a single image of an object. Furthermore, we introduce the number of non-zero pixels (NNP) into MORE, which brings improvement on recovered images. An experimental proof is performed for dynamic objects at a frame rate of 20 Hz under white-light irradiation of more than 300 nm bandwidth.

引用

页数：6