• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 B
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• pp.668-670
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• 1999

We have developed a automatic surface inspection system for cold Rolled strips in steel making process for several years. We have experienced the various kinds of surface inspection systems, including linear CCD camera type and the laser type inspection system which was installed in cold rolled strips production lines. But, we did not satisfied with these inspection systems owing to insufficient detection and classification rate, real time processing performance and limited line speed of real production lines. In order to increase detection and computing power, we have used the Dark Field illumination with Infra_Red LED, Bright Field illumination with Xenon Lamp, Parallel Computing Processor with Area typed CCD camera and full software based image processing technique for the ease up_grading and maintenance. In this paper, we introduced the automatic inspection system and real time image processing technique using the Object Detection, Defect Detection, Classification algorithms. As a result of experiment, under the situation of the high speed processed line(max 1000 meter per minute) defect detection is above 90% for all occurred defects in real line, defect name classification rate is about 80% for most frequently occurred 8 defect, and defect grade classification rate is 84% for name classified defect.

• 한국콘텐츠학회논문지
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• 제16권3호
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• pp.43-51
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• 2016

본 논문에서는 실시간 방송 및 스마트 미러 등과 같은 사용자 개인 또는 다른 사용자들과의 상호 작용이 가능한 인터렉티브 텔레프롬프터의 개념을 소개, 논의하고 실제 제작 사례를 제시한다. 이 적용 분야에서는 사용자 자신 또는 사용자와 제3자 사이의 시선의 일치가 심리적인 측면과 비음성적 커뮤니케이션에서 중요한 역할을 차지한다. 그러나 일반적인 모니터와 카메라의 조합만으로는 실제 거울을 보는 것과 같은 시선 일치를 구현하기가 쉽지 않기 때문에, 기존 방송 현장에서 널리 사용하는 텔레프롬프터의 원리를 응용한다. 제안하는 설계에서는 기존 방식과는 달리 깊이 정보를 통한 제스처 인식까지 구현하며 가시광선 정보와 적외선 정보 각각의 효율적인 처리를 위해서 텔레프롬프터에서 핵심적인 역할을 담당하는 빔 스플리터의 설계 사례와 실험 결과를 제시한다.

• 천문학회보
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• 제40권1호
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• pp.71.1-71.1
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• 2015

We prensent the near-infrared(NIR) images of the asymmetric circumstellar disk around a T-Tauri star in the ${\rho}$ Ophiuchi star-forming region, and two faint stellar objects around central star. These results were obtainted with the Subaru Telescope with HiCIAO(the High-Contrast Instrument with Adaptive Optics) and IRCS(the InfraRed Camera and Spectrograph). The disk shows center-offset from the star and a strong morphological asymmetry along both the major and minor axis. The physical conditions in the disk is derived from the infrared visibilites results and the complete spectral energy distribution using HOCHUNK3D, Monte-Carlo radiative transfer code. Two companion candidates are separated by 11.6 arcsec(~1450 au at 125 parsec) and 4.34 arcsec(~540 au at 125 parsec). This could be the first case, which imaged both of planetary mass companions and disk around same star. We discuss physical structures of the disk, and probablity that two candidates are real companions.

• 천문학논총
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• 제27권4호
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• pp.381-382
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• 2012

InfraRed Survey Facility (IRSF) is our facility for near-infrared (NIR) observation located at South African Astronomical Observatory. The NIR camera SIRIUS on the 1.4m telescope provides three $7.7^{\prime}{\times}7.7^{\prime}$ images in the J ($1.25{\mu}m$), H ($1.63{\mu}m$), and $K_S$ ($2.14{\mu}m$) bands simultaneously with a pixel scale of 0.45". IRSF has three unique capabilities, which are suitable for follow-up observations of AKARI-selected objects. Several synergistic studies with AKARI are in progress from stars to galaxies. We introduce advantages of the above unique capabilities of IRSF for further synergistic studies between AKARI and IRSF.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집E
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• pp.169-174
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• 2001

This paper reports on the development of high aspect ratio structure and 3-D integrated process for MEMS-based micro gas turbines. To manufacture high aspect ratio structures, Deep Reactive Ion Etching (DRIE) process have been developed and optimized. Specially, in this study, structures with aspect ratios greater than 10 were fabricated. Also, wafer direct bonding and Infra-Red (IR) camera bonding inspection systems have been developed. Moreover, using glass/silicon wafer direct bonding, we optimized the 3-D integrated process.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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• pp.529-532
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• 2004

The spatio-temporal variation of Infra Red(IR) emission images were obtained from a real 3-dimensional discharge space of a surface discharge type, alternating current plasma display panel(AC PDP) cell with the Ne-Xe(4%) 400Torr gas mixture. IR emissions were observed in each period of the ADS(Address and Display Separation) driving scheme with ramp initializing waveform using an images intensified charge coupled device(ICCD) camera. The roles of each electrode were identified and it was compared with the results of the discharge simulation and of the wall charge distributions measured by the electro-optic technique.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2006년도 제27회 추계학술대회논문집
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• pp.353-356
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• 2006

본 논문에서는 초음속 유동장내에 분사된 이차제트 주변에서의 열전달 현상을 고찰 하였다 초음속 유동장내에 등열유속조건이 적용된 표면을 설치하고, jet to freestream momentum ratio의 변화에 따른 2차분사를 하여, 2차분사 노즐 주변의 표면온도변화를 적외선카메라를 통하여 측정하였으며, 이를 바탕으로 대류열전달계수를 계산하였다.

• 한국마이크로전자및패키징학회:학술대회논문집
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• 한국마이크로전자및패키징학회 2003년도 기술심포지움 논문집
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• pp.270-277
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• 2003

Thermal performance of flip chip bonding with Sn-3.5Ag solder ball was studied. The temperature distribution was measured with IR(InfraRed) camera of 25 urn resolution. The measurement shows that most of the samples had much higher maximum temperature than average temperature. With central heater and 2.5 (W), the difference between maximum and average temperature is over $80^{\circ}C$. The distribution was influenced by the location of heater, the distance from heater to flip chip bonding, and the passivation opening of solder bumps. To reduce the maximum temperature, the bigger passivation opening, the smaller chip size, and the closer location of heater to flip chip bumps are preferrable.

• Applied Science and Convergence Technology
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• 제23권4호
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• pp.161-168
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• 2014

A real-time monitoring of immersed antenna type inductively coupled plasma (ICP) was done with a homemade 2 dimensional voltage probe array to check the uniformity of the plasma. Measured voltage values with a high impedance voltmeter are close to the floating potential of the plasma. As the substrate carrier was moving into a magnetron sputtering plasma diffusive from a $125mm{\times}625mm$ size cathode, measured results showed reliably separation of plasma into the upper and lower empty space over the carrier. Infra red thermal imaging camera was used to observe the cross corner effect in situ without eroding a target to the end of the usage. 3 dimensional particle trace model was used to analyze the magnetron discharge's behavior.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2002년도 춘계학술대회 논문집
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• pp.205-209
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• 2002

인체의 피부온도는 쾌적성과 감성에 크게 영향을 미치며 의류의 개발이나 건축환경의 설계 등에 활용되고 있다. 단순히 몇몇 측정점에서의 피부온도 데이터가 아니라 인체표면에 걸친 온도분포를 파악함으로써 다양한 정보를 이용하여 보다 광범위한 응용분야에 활용될 수 있을 것이다. 현재 인체표면의 온도분포를 측정하기 위하여 대부분 적외선 열화상 카메라를 활용하고 있다 그러나 열화상 카메라는 서미스터 등을 이용한 피부온 센서에 비하여 온도분해능이 떨어지며 특히 의복내의 피부온을 측정하는 것이 불가능하고 노출된 인체표면에 대해서만 측정이 가능하다. 따라서 본 연구에서는 피부온 센서를 이용한 인체표면 온도분포 측정시스템을 개발하기 위하여 각 센서의 위치와 간격, 그리고 인체 곡면을 따라서 보간법에 따라 온도분포 결과에 미치는 영향을 파악하고 적외선 화상 결과와 비교하고자 한다.