Dr. Jun-Hyuk Choi Profile

Dr. Jun-Hyuk Choi

at Chung-Ang Univ

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 14 May 2019 Paper

Introducing a general purpose S/W for IR image generation and analysis

Jun-Hyuk Choi, Chang-Won Kim, Do-Hwi Kim, Tae-Kuk Kim

Proceedings Volume 11001, 110011B (2019) https://doi.org/10.1117/12.2518886

KEYWORDS: Infrared imaging, Thermography, Infrared radiation, Image analysis, 3D modeling, Image fusion, Software development, Infrared sensors, Meteorology, Temperature metrology

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SPIE Journal Paper | 20 November 2017

Study on pixel-wise application of an active infrared stealth algorithm using the repulsive particle swarm optimization process

Kuk-Il Han, Jun-Hyuk Choi, Tae-Kuk Kim

OE, Vol. 56, Issue 11, 113110, (November 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.11.113110

KEYWORDS: Infrared imaging, Infrared radiation, Particle swarm optimization, Mid-IR, Infrared cameras, Algorithm development, Infrared sensors, Detection and tracking algorithms, Infrared signatures, Optical engineering

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Proceedings Article | 3 May 2017 Paper

Study on seasonal IR signature change of a ship by considering seasonal marine environmental conditions

Do-Hwi Kim, Kuk-Il Han, Jun-Hyuk Choi, Tae-Kuk Kim

Proceedings Volume 10178, 101780Z (2017) https://doi.org/10.1117/12.2262965

KEYWORDS: 3D modeling, Data modeling, Thermography, Ocean optics, Infrared imaging, Infrared cameras, Long wavelength infrared, Infrared signatures, Infrared radiation, Infrared sensors, Cameras

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Proceedings Article | 26 September 2016 Paper

Study on inverse estimation of radiative properties from directional radiances by using statistical RPSO algorithm

Kuk-Il Han, Do-Hwi Kim, Jun-Hyuk Choi, Tae-Kuk Kim, Jong-Jin Shin

Proceedings Volume 9961, 99610W (2016) https://doi.org/10.1117/12.2236446

KEYWORDS: Infrared radiation, Bidirectional reflectance transmission function, Statistical analysis, Particle swarm optimization, Reflectivity, Data modeling, Diffuse reflectance spectroscopy, Error analysis, Sensors, Aluminum

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Infrared signals are widely used to discriminate objects against the background. Prediction of infrared signal from an object surface is essential in evaluating the detectability of the object. Appropriate and easy method of procurement of the radiative properties such as the surface emissivity, bidirectional reflectivity is important in estimating infrared signals. Direct measurement can be a good choice but a costly and time consuming way of obtaining the radiative properties for surfaces coated with many different newly developed paints. Especially measurement of the bidirectional reflectivity usually expressed by the bidirectional reflectance distribution function (BRDF) is the most costly job. In this paper we are presenting an inverse estimation method of the radiative properties by using the directional radiances from the surface of concern. The inverse estimation method used in this study is the statistical repulsive particle swarm optimization (RPSO) algorithm which uses the randomly picked directional radiance data emitted and reflected from the surface. In this paper, we test the proposed inverse method by considering the radiation from a steel plate surface coated with different paints at a clear sunny day condition. For convenience, the directional radiance data from the steel plate within a spectral band of concern are obtained from the simulation using the commercial software, RadthermIR, instead of the field measurement. A widely used BRDF model called as the Sandford-Robertson(S-R) model is considered and the RPSO process is then used to find the best fitted model parameters for the S-R model. The results obtained from this study show an excellent agreement with the reference property data used for the simulation for directional radiances. The proposed process can be a useful way of obtaining the radiative properties from field measured directional radiance data for surfaces coated with or without various kinds of paints of unknown radiative properties.

Proceedings Article | 12 May 2015 Paper

Application and validation of a S/W developed for IR signal simulation by using the measured data from a moving test ship

Kuk-Il Han, Dong-Geon Kim, Jun-Hyuk Choi, Tae-Kuk Kim

Proceedings Volume 9452, 945215 (2015) https://doi.org/10.1117/12.2176944

KEYWORDS: Infrared imaging, Temperature metrology, Infrared radiation, Infrared cameras, Signal detection, Cameras, 3D modeling, Infrared detectors, Sensors, Infrared sensors

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Proceedings Article | 30 September 2013 Paper

Comparison of measured and simulated IR signals from a scaled model ship

Dong-Geon Kim, Kuk-Il Han, Jun-Hyuk Choi, Tae-Kuk Kim

Proceedings Volume 8857, 88570M (2013) https://doi.org/10.1117/12.2024155

KEYWORDS: Infrared cameras, Temperature metrology, Thermography, Sensors, Cameras, Mid-IR, Long wavelength infrared, Atmospheric modeling, Infrared imaging, 3D modeling

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Proceedings Article | 27 October 2011 Paper

Characteristic analyses of the reflected components of IR signals due to multiple reflection on object surfaces

Dong-Geon Kim, Jun-Hyuk Choi, Tae-Kuk Kim

Proceedings Volume 8180, 818016 (2011) https://doi.org/10.1117/12.897825

KEYWORDS: Infrared imaging, Software development, Reflection, Thermography, Reflectivity, Mid-IR, Long wavelength infrared, Infrared radiation, 3D image processing, Sensors

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Proceedings Article | 23 October 2010 Paper

Characteristic analysis of IR signatures for different optical surface properties by computer modeling and field measurement

Jun-Hyuk Choi, Tae-Kuk Kim

Proceedings Volume 7830, 78301L (2010) https://doi.org/10.1117/12.865338

KEYWORDS: Sensors, Infrared signatures, Infrared imaging, Infrared radiation, Software development, Infrared cameras, Cameras, Remote sensing, Mid-IR, Long wavelength infrared

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Proceedings Article | 9 July 2008 Paper

Analysis of the spectral surface radiance by using the surface BRDF and the atmospheric transmission effects

Jun-Hyuk Choi, Tae-Kuk Kim

Proceedings Volume 7017, 70171X (2008) https://doi.org/10.1117/12.790304

KEYWORDS: Sensors, Bidirectional reflectance transmission function, Atmospheric modeling, Solar radiation models, Reflectivity, Remote sensing, Aluminum, Transmittance, Solar radiation, Atmospheric sensing

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Proceedings Article | 24 October 2007 Paper

Study on the spectral transmission characteristics of MWIR through the atmosphere

Jun-Hyuk Choi, Tae-Kuk Kim

Proceedings Volume 6748, 67481N (2007) https://doi.org/10.1117/12.738982

KEYWORDS: Solar energy, Solar radiation models, Sensors, Solar radiation, Software development, Remote sensing, Atmospheric modeling, Infrared imaging, Infrared radiation, Aluminum

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Showing 5 of 10 publications

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