• Title/Summary/Keyword: 김준철

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고정밀 얼라인을 위한 기판 조작장치 기구설계

  • Lee, Dong-Eun;Kim, Suk-Han;Kim, Jun-Cheol;Lee, Eung-Gi
    • Proceedings of the Korean Society Of Semiconductor Equipment Technology
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    • 2006.10a
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    • pp.82-85
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    • 2006
  • OLED TV의 실현뿐만 아니라 생산성 향상을 위한 OLED의 유리기판의 대면적화가 요구되고 있다. 그러나 대면적 유리 기판은 얇은 두께로 인해 조작이 매우 어렵다. 이 연구는 굽힘지지의 새로운 대면적 유리 기판의 조작방법으로 유리 기판의 처짐을 최소화 하려 한다. 또한 대면적 유리기판의 최소 처짐을 위해 다양한 실험이 수행되고 있다. 이 새로운 유리 기판의 조작방법은 OLED 디스플레이의 제조과정에 사용될 수도 있다.

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A Comparative Study on Object Recognition about Performance and Speed (물체 인식의 성능 및 속도 개선 방향에 대한 비교 연구)

  • Kim, Jun-Chul;Kim, Hak-Il
    • Proceedings of the IEEK Conference
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    • 2008.06a
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    • pp.1055-1056
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    • 2008
  • In this paper, we survey various Robust Object Recognition Algorithms. One of the core technologies for local feature detector is Scale Invariant Feature Transform. And we compared several algorithms with SIFT based on IPP technology. As a result, the conversion of source codes using IPP is sped up. And this will be more improved recognition speed using SIMD Instructions.

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병렬 영상처리 기반의 고속 머신 비전기술동향

  • Park, Eun-Su;Choe, Hak-Nam;Kim, Jun-Cheol;Jeong, Eum-Han;Kim, Hak-Il
    • ICROS
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    • v.15 no.3
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    • pp.31-39
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    • 2009
  • 본 고에서는 병렬 영상처리를 이용한 고속 머신 비전(Machine Vision) 기술의 동향에 관해 다룬다. 머신 비전에서 사용되는 대표적인 고속 상용 영상처리 라이브러리인 MIL, HALCON, IPP에 대해 소개하고 현재 활발히 연구되고 있는 SSE, OpenMP, CUDA와 같은 병렬 처리 기술에 대하여 알아 본다. 이러한 병렬 처리 기술을 실제 영상처리 알고리즘에 적용하여 그 성능을 고속 상용 영상처리 라이브러리의 성능과 비교하여 소개된 병렬 처리 기술을 실제 PCB 기판 자동검사와 같은 머신 비전에 적용한 연구사례에 대해서 알아본다.

A Study on the correcting and updating the Digital Map using Remotely Sensed Data (위성영상을 이용한 수치지도 수정/갱신 방안 연구)

  • 윤여상;김준철;박수영;최종현
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2003.10a
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    • pp.391-396
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    • 2003
  • The digital map expresses natural topography and artificial things with 3D position coordinates in the computer such as the road, railway, building, river, mountain, paddy and dryland. Therefore, those should contribute to the information-oriented society by maintaining information and providing it to users quickly. However it is difficult to maintain the most recent topographic information all the time because of restricted budget and time. The purpose of this study is to investigate and analyze the updating area of the digital map using remotely sensed data, and to furnish the useful information reducing cost and time. To predict updating area of the digital map, we applied the urban changes analysis method to Landsat TM images from produced date of the digital map to up-to-date. Classification method for urban change analysis applied single band process algorithm. This study presents that updating area of the digital map is predicted by only the rate of 40% on total research area.

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A study on the generation of Road DEM with high accuracy using Laser scanning data (레이저 스캐닝 데이터를 이용한 정밀 도로 수치표고모델 제작에 관한 연구)

  • 김준철;박수영;윤여상;주영은;최종현
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2003.10a
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    • pp.245-250
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    • 2003
  • Digital Elevation Model(DEM) is basic spatial information used in various GIS areas such as spatial analysis, 3D modeling, etc. In particular, DEM of road inclined plane is need for the plan, design, construction and maintenance of social infrastructures such as roads and bridges in construction technology, one of GIS application. However, generating DEM of road inclined plane with high accuracy is very difficult. Therefore, the purpose of this study is to propose how to generate road DEM with high accuracy through extracting road inclined plane automatically using Laser scanning data.

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Heritabilities, Genotypic and Phenotypic Correlations, and Selection Indices in Aromatic Tobacco Varieties(Nicotiana tabacum L. (향끽미종 잎담배 유전에 관한 연구)

  • 김준철;황주광
    • Journal of the Korean Society of Tobacco Science
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    • v.3 no.1
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    • pp.49-57
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    • 1981
  • To obtain genetic information for breeding aromatic tobacco, broad sense heritabilities, phenotypic, and genotypic correlations were obtained for the following characters : days to frowert, plant height, number of leaves, leaf shape and nicotine. Six pure line varieties and the first and second generations of 5 crosses among them were employed in this study. The heritabilities for number of leaves and nicotine were very high in pure line varieties. However, the heritabilities for days to flower and yield were low in six varieties as well as in F2. Genotypic correlations had higher values than phenotypic did. Heritabilities calculated from segregating generations were lower than those from pure varieties, regardless of crosses involved. Positive phenotypic correlations between yield and plant height were observed in all crosses. Same phenomenon was observed with correlations between days to flower and number of leaves. The genotypic and phenotypic variances and covariances entering into the computation of correlations were used to construct the seletion indices for yield. The use and limitation of selection index was also discussed.

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