• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.658-660
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• 2004

본 논문에서는 입체 영상을 이용한 몰입형 3차원 게임 제작 기법을 제안한다. 제안하는 기법은 셔터글래스를 이용하여 좌안과 우안의 영상을 분리 투영하여 사용자로 하여금 입체감 을 느낄 수 있도록 한다. 이때, 사용자가 느끼는 눈의 피로를 최소화하기 위하여 입체 영상 디스플레이에 필요한 인자들을 최적으로 선택하는 방법을 제안한다. 또한, 예시되는 블록격파게임에서의 충돌처리를 효율적으로 구현하기 위하여 본 논문에서는 체적소와 광선 추적법을 응용한 효율적인 알고리즘을 제안한다.

• The Optical Journal
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• s.139
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• pp.58-59
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• 2012

아시아 최고의 사진영상분야 전시회인 '2012 서울국제사진영상기자재전(이하 P&I 2012)'이 지난 4월 26일부터 29일까지 4일간 서울 코엑스 본관 1층 A홀에서 화려하게 펼쳐졌다. 이번 전시회에는 국내 토종카메라 업체인 삼성을 비롯하여 캐논, 니콘, 올림푸스, 파나소닉, 소니, 후지필름 등 카메라 제조사와 프린터 및 사진 액세서리 업체 등 세계 18개국 117개사가 참가했으며 전시기간동안 전년도보다 많은 총 7만4000여명의 참관객이 다녀간 것으로 나타나 카메라를 비롯한 사진영상분야에 대한 뜨거운 열기가 가득했다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.20 no.1
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• pp.21-31
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• 2002

This study applied each Neural Networks theory and Fuzzy Set theory to improve accuracy in remotely sensed images. Remotely sensed data have been used to map land cover. The accuracy is dependent on a range of factors related to the data set and methods used. Thus, the accuracy of maps derived from conventional supervised image classification techniques is a function of factors related to the training, allocation, and testing stages of the classification. Conventional image classification techniques assume that all the pixels within the image are pure. That is, that they represent an area of homogeneous cover of a single land-cover class. But, this assumption is often untenable with pixels of mixed land-cover composition abundant in an image. Mixed pixels are a major problem in land-cover mapping applications. For each pixel, the strengths of class membership derived in the classification may be related to its land-cover composition. Fuzzy classification techniques are the concept of a pixel having a degree of membership to all classes is fundamental to fuzzy-sets-based techniques. A major problem with the fuzzy-sets and probabilistic methods is that they are slow and computational demanding. For analyzing large data sets and rapid processing, alterative techniques are required. One particularly attractive approach is the use of artificial neural networks. These are non-parametric techniques which have been shown to generally be capable of classifying data as or more accurately than conventional classifiers. An artificial neural networks, once trained, may classify data extremely rapidly as the classification process may be reduced to the solution of a large number of extremely simple calculations which may be performed in parallel.

• Journal of the Institute of Convergence Signal Processing
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• v.11 no.3
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• pp.203-208
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• 2010

In this paper, we convert underwater acoustic signal made by sonar system into digital image. We propose the algorithm that detects target candidate and emphasizes information of target introducing image processing technique for the digital image. The process detecting underwater target estimates background noise in underwater acoustic signal changing irregularly, recomposes it. and eliminates background from original image. Therefore, it generates initial target group. Also, it generates weighted map through proceeding doppler information, ensures information for target candidate through filtering using weighted map for image eliminated background noise, and decides the target candidate area in the single frame. In this paper, we verified that proposed algorithm almost had eliminated the noise generated irregularly in underwater acoustic signal made by simulation, targets had been displayed more surely in the image of underwater acoustic signal through filtering and process of target detection.

• Journal of Environmental Impact Assessment
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• v.27 no.5
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• pp.475-488
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• 2018

Surveying urban tributary vegetation is based mainly on field sampling at present. The tributary vegetation survey integrating UAV NIR(Unmanned Aerial Vehicle Near Infrared Radiance) imagery and in-situ point photo has received only limited attentions from the field ecologist. The reason for this could be the largely undemonstrated applicability of UAV NIR imagery by the field ecologist as a monitoring tool for urban tributary vegetation. The principal advantage of UAV NIR imagery as a remote sensor is to provide, in a cost-effective manner, information required for a very narrow swath target such as urban tributary (10m width or so), utilizing very low altitude flight, real-time geo-referencing and stereo imaging. An exhaustive and realistic comparison of the two techniques was conducted, based on operational customer requirement of urban tributary vegetation survey: synoptic information, ground detail and quantitative data collection. UAV NIR imagery made it possible to identify area-wide patterns of the major plant communities subject to many different influences (e.g. artificial land use pattern), which cannot be acquired by traditional field sampling. Although field survey has already gained worldwide recognition by plant ecologists as a typical method of urban tributary vegetation monitoring, this approach did not provide a level of information that is either scientifically reliable or economically feasible in terms of urban tributary vegetation (e.g. remedial field works). It is anticipated that this research output could be used as a valuable reference for area-wide information obtained by UAV NIR imagery in urban tributary vegetation survey.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.29 no.2
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• pp.141-147
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• 2011

This study analyzed the issues and its usefulness of drawing small-scale digital map by using the large-scale digital map which was producted with high-resolution digital aerial photograph which are commonly photographed in recent years. To this end, correlation analysis of the feature categories on the digital map was conducted, and this map was processed by inputting data, organizing, deleting, editing, and supervising feature categories according to the generalization process. As a result, 18 unnecessary feature codes were deleted, and the accuracy of 1/5,000 for the digital map was met. Although the size of the data and the number of feature categories increased, this was proven to be shown due to the excellent description of the digital aerial photograph. Accordingly, it was shown that drawing a small-scale digital map with the large-scale digital map by digital aerial photograph provided excellent description and high-quality information for digital map.

• Korean Journal of Remote Sensing
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• v.16 no.1
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• pp.25-36
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• 2000

To evaluate the feasibility of using lineaments for the interpretation of regional geological structures, the extracted lineaments from satellite image and surveyed surface geological features mapped in the field were analyzed for the Euiseong Sub-basin. The lineaments extracted from Landsat-5 TM images show primary directions of N20$^{\circ}$~30$^{\circ}$E, N60$^{\circ}$~70$^{\circ}$E, N60$^{\circ}$~70$^{\circ}$W, which represent the trends of faults, strikes, and joints. In the sedimentary formation in the northern part of Palgongsan Uplift Zone, primary directions of the lineaments are NNE and NWW, and NEE in southern parts. The analysis of satellite lineaments is proved to be very useful to study the large-scale structures and surface geology of the Euiseong Sub-basin, whereas the previous research using brittle tectonics approach was advantaged in the outcrop scale in interpretation.

• The Optical Journal
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• s.132
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• pp.60-64
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• 2011

사진인들의 축제마당인 '2011 서울국제사진영상기자재전'이 4월21일부터 24일까지 나흘간의 일정으로 코엑스 본관 1층 A홀에서 성대하게 개최된다. 올해로 20회 째를 맞이하며 국내에서 개최되는 국제 규모의 사진 관련 행사 중 최대 규모를 자랑하는 이 전시회에는 삼성, 올림푸스, 소니, 니콘, 캐논, 파나소닉 등 메이저 카메라 업체가 대거 참가해 다양한 시연행사와 이벤트를 선보일 예정이다. 또한 출력장비, 사진 소프트웨어, 사진 액세서리, 사진 스튜디오 관련 장비 등을 한자리에서 봄으로써 최신 기술동항의 흐름 파악과 함께 참관객들에게 잊지 못할 즐거운 체험의 장을 선사할 예정이다.

• The Optical Journal
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• s.140
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• pp.42-43
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• 2012

세계 최대 규모의 사진 영상기기 전시회인 '포토키나(photokina) 2012'가 오는 9월 18일부터 23일까지 독일 퀼른에서 펼쳐진다. 퀼른메세(Koelnmesse)와 사진협회(Photographic Industry Association)가 주최하는 포토키나는 40여 개 이상의 국가에서 약 1,200개 공급업체가 참여할 것으로 보인다. 사진 영상기기 업계는 이번 전시회를 통해 전 세계 관람객들에게 업그레이드된 제품과 서비스를 선보일 예정이다. 특히 캐논, 파나소닉, 엡손, 라이카, 올림푸스, 니콘, 소니, 후지필름, 시그마, 로우프로 등과 같은 주요 이미징 업체들이 대거 신제품을 출품해 풍성함을 더한다.

• The Optical Journal
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• s.126
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• pp.40-41
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• 2010

사진영상기술과 전문사진작품을 동시에 만날 수 있는 아시아 최대의 사진 페스티발이 열린다. 올해로 19회 째를 맞이하는 2010 서울국제사진영상기자재전(이하 P&I 2010)이 오는 4월 29일(목)부터 5월2일(일)까지 총 4일간의 일정으로 서울 코엑스 본관1층 A홀(구 태평양홀)에서 열린다. 올해 전시회에는 토종 카레마업체인 삼성을 비롯하여 니콘, 캐논, 소니, 올림푸스, 파나소닉 등 메이저 카메라 업체 및 글로벌 기업들이 대거 참여해 다양한 시연행사와 함께 참관객들에게 잊지 못할 즐거운 체험의 장을 선사할 예정이다.