scholarly journals Underwater Hyperspectral Imaging Technology and Its Applications for Detecting and Mapping the Seafloor: A Review

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4962
Author(s):  
Bohan Liu ◽  
Zhaojun Liu ◽  
Shaojie Men ◽  
Yongfu Li ◽  
Zhongjun Ding ◽  
...  
Keyword(s):  
Hyperspectral Imaging ◽  
Deep Sea ◽  
Mineral Exploration ◽  
Rapid Development ◽  
Emerging Technology ◽  
Imaging Systems ◽  
Benthic Habitat ◽  
Imaging Technology ◽  
Close Range ◽  
Ocean Remote Sensing

Common methods of ocean remote sensing and seafloor surveying are mainly carried out by airborne and spaceborne hyperspectral imagers. However, the water column hinders the propagation of sunlight to deeper areas, thus limiting the scope of observation. As an emerging technology, underwater hyperspectral imaging (UHI) is an extension of hyperspectral imaging technology in air conditions, and is undergoing rapid development for applications in shallow and deep-sea environments. It is a close-range, high-resolution approach for detecting and mapping the seafloor. In this paper, we focus on the concepts of UHI technology, covering imaging systems and the correction methods of eliminating the water column’s influence. The current applications of UHI, such as deep-sea mineral exploration, benthic habitat mapping, and underwater archaeology, are highlighted to show the potential of this technology. This review can provide an introduction and overview for those working in the field and offer a reference for those searching for literature on UHI technology.

scholarly journals Lightweight Integrated Solution for a UAV-Borne Hyperspectral Imaging System

2020 ◽  
Vol 12 (4) ◽  
pp. 657 ◽  
Author(s):  
Hao Zhang ◽  
Bing Zhang ◽  
Zhiqi Wei ◽  
Chenze Wang ◽  
Qiao Huang
Keyword(s):  
Hyperspectral Imaging ◽  
Imaging System ◽  
Rapid Development ◽  
Processing System ◽  
Imaging Systems ◽  
Acquisition System ◽  
Geometric Distortion ◽  
Measurement Unit ◽  
Processing Unit ◽  
Stable Performance

The rapid development of unmanned aerial vehicles (UAVs), miniature hyperspectral imagers, and relevant instruments has facilitated the transition of UAV-borne hyperspectral imaging systems from concept to reality. Given the merits and demerits of existing similar UAV hyperspectral systems, we presented a lightweight, integrated solution for hyperspectral imaging systems including a data acquisition and processing unit. A pushbroom hyperspectral imager was selected owing to its superior radiometric performance. The imager was combined with a stabilizing gimbal and global-positioning system combined with an inertial measurement unit (GPS/IMU) system to form the image acquisition system. The postprocessing software included the radiance transform, surface reflectance computation, geometric referencing, and mosaic functions. The geometric distortion of the image was further significantly decreased by a postgeometric referencing software unit; this used an improved method suitable for UAV pushbroom images and showed more robust performance when compared with current methods. Two typical experiments, one of which included the case in which the stabilizing gimbal failed to function, demonstrated the stable performance of the acquisition system and data processing system. The result shows that the relative georectification accuracy of images between the adjacent flight lines was on the order of 0.7–1.5 m and 2.7–13.1 m for cases with spatial resolutions of 5.5 cm and 32.4 cm, respectively.

scholarly journals Quality inspection of nectarine based on hyperspectral imaging technology

2021 ◽  
Vol 9 (1) ◽  
pp. 350-357
Author(s):  
Feng-Hua Huang ◽  
Yan-Hong Liu ◽  
XinYi Sun ◽  
Hua Yang
Keyword(s):  
Hyperspectral Imaging ◽  
Quality Inspection ◽  
Imaging Technology

Adaptive and automatic red blood cell counting method based on microscopic hyperspectral imaging technology

2017 ◽  
Vol 19 (12) ◽  
pp. 124014 ◽  
Author(s):  
Xi Liu ◽  
Mei Zhou ◽  
Song Qiu ◽  
Li Sun ◽  
Hongying Liu ◽  
...  
Keyword(s):  
Blood Cell ◽  
Hyperspectral Imaging ◽  
Red Blood Cell ◽  
Cell Counting ◽  
Counting Method ◽  
Imaging Technology ◽  
Blood Cell Counting

The design of wavelets for limited-angle tomographic hyperspectral imaging systems

2010 ◽  
Author(s):  
James F. Scholl ◽  
E. Keith Hege ◽  
Eustace L. Dereniak
Keyword(s):  
Hyperspectral Imaging ◽  
Imaging Systems ◽  
Limited Angle
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