• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2010년도 하계학술대회 논문집
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• pp.282-282
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• 2010

LED Device was designed of electronic circuits of electrical power part for used Pspice student version and used Infrared LED lamps of load part. LED was used Computerized Electronic Medical Infrared Thermographic Imaging System for body surface Investigation of variable Body thermal asymmetry. It was knowledge body thermal Asymmetry of body surface and quantity body surface of electromagnetic wave to inflow electrical power part.

• 한국광학회지
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• 제5권2호
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• pp.212-216
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• 1994

원적외선 영역인 $8-12.\mu$m 대역의 열상장비 주사광학계를 설계 제작하였다. 검출기로 5개 소자의 SP-RITE HgCdTe를 사용하는 직병렬 주사를 위해 수평 및 수직주사에는 각각 회전다면거울과 진동평면거울을 사용하였으며, 주사연결거울로는 구면거울을 사용하여 주사거울의 크기 및 입사동에서의 동수차를 최소화 하였다. 주사광학계는 $40^{\circ}\times26.67^{\circ}$의 넓은 주사시야를 갖는다. 회절 변조전달함수의 계산결과 회절한계의 성능을 만족하였으며 제작 및 시험 결과 고분해능의 열영상을 얻을 수 있었다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 B
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• pp.400-403
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• 2003

This paper presents the signal processing of the panoramic thermal warning system that detects the small target such as aircraft and helicopter from afar. We develope the all round looking thermal imaging system which can scan all the way. This system acquires the panoramic images to reconstruct the IR images by revolving head of sensor typed line sensor at high speed. For detection, where the object of interest may be small, it is sometimes difficult to specify from object and background by conventional contrast enhancement methods. Therefore we use the adaptive plateau equalization algorithm each region to improve the contrast and make the hardware system which consists of the signal processing board for real-time display. We can verify the proposed method by the computer simulation and the hardware implementation.

• Nuclear Engineering and Technology
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• 제45권3호
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• pp.361-366
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• 2013

An imaging technique to visualize the internal defects in a plate-type nuclear fuel specimen was developed by using an active optical interferometer for a nondestructive quality inspection. A periodic thermal wave having a sinusoidal intensity pattern induced a periodical strain variation for the specimen. The varying strain image was acquired using an optical laser interferometer. The strain distribution over the internal defects will be distorted in an acquired strain image because a part of the thermal wave will be reflected from these defects during propagation. In this paper, internal defects were efficiently visualized by sequentially accumulating the extracted defect components. The experimental results confirmed that the developed visualization system can be a valuable tool to detect the internal defects in plate-type nuclear fuel.

• 한국철도학회논문집
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• 제10권3호
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• pp.251-256
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• 2007

The research analyzed dynamo test results to evaluate compatibility between brake disk made of NCM-CV cast iron and various pads. The dynamo test was executed with one kind of resin pad and three kinds of sintered pads suitable for 200 km/h trains according to a program which refers to UIC 541-3. The thermocouples were established in specific location in order to measure the temperature of disk and pads. In addition, the thermal imaging camera was used for capturing the instantaneous thermal characteristic of disk. The research results may be utilized to use as basis data of pad development for NCM-CV brake disk hereafter.

• 대한원격탐사학회지
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• 제35권4호
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• pp.609-616
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• 2019

Land surface temperature ($T_s$) is a critical variable for understanding the surface energy exchange between land and atmosphere. Using the data measured from micrometeorological flux towers, three types of $T_s$, obtained using a thermal-infrared radiometer (IRT), a net radiometer, and an equation for sensible heat flux, were compared. The $T_s$ estimated using the net radiometer was highly correlated with the $T_s$ obtained from the IRT. Both values acceptably fit the $T_s$ from the Terra/MODIS (Moderate Resolution Imaging Spectroradiometer)satellite. These results will enhance the measurement of land surface temperatures at various scales. Further, they are useful for understanding land surface energy partitioning to evaluate and develop land surface models and algorithms for satellite remote sensing products associated with surface thermal conditions.

• 로봇학회논문지
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• 제18권1호
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• pp.48-52
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• 2023

Many studies have been conducted to ensure that Visual Place Recognition is reliable in various environments, including edge cases. However, existing approaches use visible imaging sensors, RGB cameras, which are greatly influenced by illumination changes, as is widely known. Thus, in this paper, we use an invisible imaging sensor, a long wave length infrared camera (LWIR) instead of RGB, that is shown to be more reliable in low-light and highly noisy conditions. In addition, although the camera sensor used to solve this problem is an LWIR camera, but since the thermal image is converted into RGB image the proposed method is highly compatible with existing algorithms and databases. We demonstrate that the proposed method outperforms the baseline method by about 0.19 for recall performance.

• 문화기술의 융합
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• 제9권5호
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• pp.737-745
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• 2023

본 논문은 열화상 이미지를 활용하여 배전반 화재 발생을 감지하기 위한 인공지능 모델을 개발하는 연구에 대해 다룬다. 연구의 목표는 수집한 열화상 이미지를 전처리하여 객체 탐지 모델에 적합한 데이터로 가공하고, 이를 이용하여 배전반 내 화재 발생 여부를 판단하는 모델을 설계하는 것이다. 연구에서는 AI-HUB의 산업단지 내 학습용 열화상 이미지 데이터를 활용하였으며, CNN 기반 딥러닝 객체 검출 알고리즘 중 대표적인 모델인 Faster R-CNN과 RetinaNet을 사용하여 모델을 구축하고 두 개의 모델을 비교 분석하여 최적의 모델을 제안하고 있다.

• 한국항공우주학회지
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• 제43권2호
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• pp.179-185
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• 2015

우주용 고해상도 전자광학카메라의 개발에 있어 초점면 배열 장치(Focal Plane Assembly, FPA)의 열제어 설계는 영상품질을 결정하는 중요한 요소이다. FPA 열제어 설계의 목표는 영상 촬영 기간 중 안정적인 열 환경을 제공하는 것으로, 촬영 기간 동안 운용 온도를 주어진 범위 내로 유지해야 하며 후속 촬영에 문제가 없도록 빠른 시간 내에 온도 초기화를 완료해야 한다. 상기의 두 항목인 온도 유지와 온도 초기화 중에서 FPA 구조 설계에 따른 영향을 가장 많이 받으며, 설계 변경의 자유도가 상대적으로 낮은 온도 유지 항목에 대하여 FPA 구조설계 초기 단계부터 검토 및 반영이 가능한 단순화 된 열 저항 해석 기반의 온도 예측 방안을 정의하였다. 또한 열해석 결과와의 비교를 통해 온도 예측 방안을 검증, FPA 설계를 위한 trade-off에 효과적으로 사용할 수 있음을 확인하였다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.355-356
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• 2006

The glass transition behavior of OLED materials is very important for both processing and lifetime. We report about the correlation between the structure of selected small molecule Hole Transport Materials (HTM's) and their glass transition temperature. The thermal stability of devices manufactured with them was investigated. The results give researchers and engineers some information which are helpful for designing new molecules and processing them in device making.