Interested region selection and super-resolution reconstruction of depth image for scanning lidar

Ao Yang, Jie Cao*, Zhijun Li, Yang Cheng, Qun Hao*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Scanning lidar scans the target region point-by-point and measures the time of flight (TOF) of laser signal at each point to obtain the 3D information of the target surface. By using fixed size of scanning spot, the resolution of reconstructed depth image is consistent with the number of scanning points. Therefore, traditional scanning lidar is hardly to achieve high resolution and scanning efficiency simultaneously. Aimed to address this issue, we propose a method of interested region selection and depth image super-resolution reconstruction. By constructing a simulation target region with 10 m × 10 m, the proposed method is used to scan this region. The position of the interested region is obtained by scanning the full field of view (FOV) with a large spot. Then the interested region with 4 m × 8 m is fine scanned with reduced scanning spot. By using the super-resolution reconstruction method of depth image, the resolution of the depth image obtained by fine scanning with 40 × 80 points is increased by two times. And the depth image of the interested region with 80 × 160 pixels is obtained. The simulation result shows that the lidar based on this method can give consideration to both high scanning efficiency and the resolution of reconstructed depth image.

Original languageEnglish
Title of host publication10th International Symposium on Advanced Optical Manufacturing and Testing Technologies
Subtitle of host publicationIntelligent Sensing Technologies and Applications
EditorsXiong Li, Yadong Jiang, Xiaoliang Ma, Tao Zhu, Bo Qi
PublisherSPIE
ISBN (Electronic)9781510650251
DOIs
Publication statusPublished - 2021
Event10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Intelligent Sensing Technologies and Applications 2021 - Chengdu, China
Duration: 14 Jun 202117 Jun 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12075
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Intelligent Sensing Technologies and Applications 2021
Country/TerritoryChina
CityChengdu
Period14/06/2117/06/21

Keywords

  • 3D imaging lidar
  • Depth image reconstruction
  • Full-waveform
  • Scanning strategy

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