Active hyperspectral imaging for vegetation based on a supercontinuum laser and SPAD array
CSTR:
Author:
Affiliation:

1College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;2National Center of Technology Innovation for Advanced Aviation Equipment, Chengdu 610074, China;3College of Mechanics and Engineering Science, Hohai University, Nanjing 211100, China;4School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China;5Department of Forest Sciences, University of Helsinki, Helsinki 00014, Finland;6.6Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China;7.7School of Automation, Nanjing Institute of Technology, Nanjing 211167, China

Clc Number:

Fund Project:

Supported by the National Natural Science Foundation of China (62573232, 62503224 61903190); the Natural Science Foundation of Jiangsu Province (BK20241388)

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    Hyperspectral LiDAR (HSL) is an emerging active sensing technique that can simultaneously acquire spectral and spatial information for quantitative remote sensing applications. However, most existing HSL systems acquire spectral and spatial information point by point, which limits the acquisition of image-like hyperspectral data and dense 3D point clouds. In this paper, the authors presented a hyperspectral imaging LiDAR system based on a chip-scale single-photon avalanche diode (SPAD) array (768 × 576) and a supercontinuum laser source (SPAD-HSL). A focus-tunable emitting system was designed to provide broadband illumination, while a SPAD-array-based receiving system was developed to enable wavelength-selective detection using optical filters. Based on the proposed SPAD-HSL system, hyperspectral measurements were conducted on a total of 12 leaf samples, including 5 species and various physiological states, under different detection distances and angles. The acquired spectral data were subsequently compared with spectrometer measurements, demonstrating that the proposed system enables active hyperspectral imaging acquisition and achieves high spectral consistency.

    Reference
    Related
    Cited by
Get Citation
Related Videos

Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:March 29,2026
  • Revised:July 02,2026
  • Adopted:May 26,2026
  • Online: June 30,2026
  • Published:
Article QR Code