Dr. Chengyu Liu Profile

Dr. Chengyu Liu

at Shanghai Institute of Technical Physics

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Publications (9)

Proceedings Article | 12 March 2019 Paper

Atmospheric correction system for airborne thermal infrared imaging spectrometer: general design

Chengyu Liu, Honglan Shao, Feng Xie, Chunlai Li, Jianyu Wang

Proceedings Volume 11023, 110232R (2019) https://doi.org/10.1117/12.2521661

KEYWORDS: Atmospheric corrections, Infrared radiation, Atmospheric modeling, Remote sensing, Infrared spectroscopy, Infrared sensors, Radiative transfer

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As a new hyperspectral remote sensing technology, the thermal infrared hyperspectral remote sensing has the ability to observe the surface day and night. Instead of the surface temperature retrieval, the ultimate goal of the hyperspectral thermal infrared remote sensing data is to retrieve surface emissivity which can be used for mineral detection, ground parameters inversion and target identification and so on. Due to the inevitable atmospheric influence during the data acquisition process of thermal infrared hyperspectral imager, the atmospheric radiation information is included in the hyperspectral thermal infrared remote sensing data. The atmospheric correction with high precision is the premise of effectively implementing the subsequent applications. The aircraft, especially the unmanned aerial vehicle rising in recent years, is an important platform for remote sensing because of its flexibility, immunity to the cloud cover and high spatial resolution. The aircraft flies through the atmosphere when working, which makes the direct measurement possible for the atmosphere. On the basis of summarizing the features of the atmospheric correction methods for the hyperspectral thermal infrared remote sensing data, and the principle and process of atmospheric radiative transfer, the paper proposed an overall vision for the atmospheric correction based on the measured atmospheric downwelling radiance at the aircraft flight height, designed an atmospheric correction system for airborne thermal infrared imaging spectrometer, and stated the atmospheric correction procedure of hyperspectral thermal infrared remote sensing data using the system. The proposed system and procedure for atmospheric correction are able to acquire the atmospheric downwelling thermal infrared radiation information in real time, so without too many assumptions, it is possible to dramatically increase the precision of the atmospheric correction for the airborne hyperspectral thermal infrared remote sensing data and gives a promise to the objectivity of the data.

Proceedings Article | 23 October 2018 Paper

A new urban river network extraction method and spatial scale analysis

Jiawei Yang, Chengyu Liu, Rong Shu, Feng Xie, Jianyu Wang, Chunlai Li

Proceedings Volume 10780, 1078013 (2018) https://doi.org/10.1117/12.2324650

KEYWORDS: Reflectivity, Remote sensing, Spatial resolution, Image resolution, Hyperspectral imaging, Vegetation, Spectral resolution, Absorption, Environmental sensing, Network security

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Proceedings Article | 8 March 2017 Paper

Self-calibration method for eccentric angle in hyperspectral and LiDAR integrated airborne system

Gui Yang, Feng Xie, Chengyu Liu, Honglan Shao, Jianyuan Lin, Jianyu Wang, Ying Guo

Proceedings Volume 10255, 1025520 (2017) https://doi.org/10.1117/12.2267406

KEYWORDS: Calibration, LIDAR, System integration, Sensors, Clouds, Image sensors, Sensor calibration, Hyperspectral imaging, Error analysis, Imaging systems

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Proceedings Article | 8 March 2017 Paper

Retrieving inherent optical properties for turbid inland waters: an improved quasi-analytical algorithm based on the linear spectral backscattering coefficient constraint

Feng Xie, Changxing Zhang, Honglan Shao, Chengyu Liu, Zhihui Liu, Gui Yang, Jianyu Wang, Jianyuan Lin

Proceedings Volume 10255, 102551Z (2017) https://doi.org/10.1117/12.2267400

KEYWORDS: Optical properties, Backscatter, Water, Reflectivity, Absorption, Particles, Signal attenuation, Reflection, Refractive index, Remote sensing

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Proceedings Article | 19 August 2016 Paper

Data processing and application of thermal infrared hyperspectral remote sensing

Feng Xie, Gui Yang, Chengyu Liu, Zhihui Liu, Changxing Zhang, Honglan Shao, Jianyu Wang, Nengbin Cai

Proceedings Volume 9880, 98802G (2016) https://doi.org/10.1117/12.2228210

KEYWORDS: Calibration, Infrared sensors, Sensors, Infrared imaging, Thermography, Infrared radiation, Infrared cameras, Image sensors, Infrared detectors, Nonuniformity corrections, Calibration, Infrared sensors, Sensors, Infrared imaging, Remote sensing, Image segmentation, Data processing, Detection and tracking algorithms, Temperature metrology

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Proceedings Article | 30 April 2016 Paper

Retrieval of the pixel component temperatures from multi-band thermal infrared image using Bayesian inversion technique

Feng Xie, Honglan Shao, Zhihui Liu, Chengyu Liu, Changxing Zhang, Gui Yang, Jianyu Wang, Nengbin Cai

Proceedings Volume 9880, 98802A (2016) https://doi.org/10.1117/12.2227579

KEYWORDS: Infrared imaging, Thermography, Infrared radiation, Infrared sensors, Remote sensing, Short wave infrared radiation, Image retrieval, Spectral resolution, Spatial resolution, Infrared spectroscopy, Infrared sensors, Data modeling, Vegetation, Atmospheric modeling, Temperature metrology

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Proceedings Article | 30 April 2016 Paper

The dynamic monitoring of warm-water discharge based on the airborne high-resolution thermal infrared remote sensing data

Honglan Shao, Feng Xie, Chengyu Liu, Zhihui Liu, Changxing Zhang, Gui Yang, Jianyu Wang

Proceedings Volume 9880, 988029 (2016) https://doi.org/10.1117/12.2227567

KEYWORDS: Remote sensing, Infrared sensors, Thermography, Infrared radiation, Ocean optics, Infrared imaging, Infrared technology, Geographic information systems, Environmental sensing, Water, Floods, Diffusion, Atmospheric physics

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Proceedings Article | 26 November 2014 Paper

Component temperatures inversion using airborne multi-band thermal infrared image

Honglan Shao, Chengyu Liu, Feng Xie, Jianyu Wang

Proceedings Volume 9263, 926320 (2014) https://doi.org/10.1117/12.2069141

KEYWORDS: Thermography, Infrared radiation, Remote sensing, Infrared imaging, Vegetation, Infrared sensors, Data modeling, Temperature metrology, Atmospheric particles, Atmospheric optics

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Proceedings Article | 18 November 2014 Paper

Sea ice density estimation in the Bohai Sea using the hyperspectral remote sensing technology

Chengyu Liu, Honglan Shao, Feng Xie, Jianyu Wang

Proceedings Volume 9263, 92632T (2014) https://doi.org/10.1117/12.2069159

KEYWORDS: Reflectivity, Remote sensing, Hyperspectral imaging, Ocean optics, Data modeling, Scattering, Spectroscopy, Calibration, Short wave infrared radiation, Coastal modeling

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Showing 5 of 9 publications

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