Differential time domain method improves performance of pulsed laser ranging and three-dimensional imaging

被引：15

作者：

Cao, Jie ^{[1
,2
]}

Hao, Qun ^{[1
]}

Cheng, Yang ^{[1
]}

Peng, Yuxin ^{[2
]}

Zhang, Kaiyu ^{[1
]}

Mu, Jiaxing ^{[1
]}

Wang, Peng ^{[1
]}

机构：

[1] Beijing Inst Technol, Key Lab Biomimet Robots & Syst, Sch Optoelect, Minist Educ, Beijing 100081, Peoples R China

[2] Natl Univ Singapore, Dept Biomed Engn, Singapore 117575, Singapore

来源：

APPLIED OPTICS | 2016年 / 55卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Imaging systems - Pulsed lasers;

D O I：

10.1364/AO.55.000360

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A ranging method based on the differential time domain method (DTDM) is proposed in order to improve ranging accuracy and the range of active measurement based on peak discriminator (PD). We develop mathematical models and deduce that zero-crossing sensitivity is an important factor, which affects the ranging error of DTDM. Additionally, zero-crossing sensitivity is determined by delayed time. We carried out relative experiments and obtained the smallest ranging error when delayed time is receiving pulse width. We also compare ranging, three-dimensional (3D) point clouds and depth images based on two methods under same testing conditions. The results show that DTDM is beneficial in improving performance of pulse laser ranging and 3D imaging. (C) 2016 Optical Society of America

引用

页码：360 / 367

页数：8

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