• 건강소식
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• v.14 no.1 s.134
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• pp.11-11
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• 1990

• The Optical Journal
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• v.10 no.2 s.54
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• pp.7-9
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• 1998

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1135-1136
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• 2023

자율주행에서의 경로 계획을 위해서는 costmap을 활용할 수 있다. Costmap은 map 정보와 센서 데이터를 토대로 해당 지역을 통과할 때의 위험도를 cost로 할당한다. 그러나 local costmap에는 센서로 인식한 장애물만이 고려되며, 차선 정보를 경로 계획에 포함하기 위해서는 별도의 정보 처리가 필요하다. 본 연구에서는 카메라로 인식한 차선 정보를 costmap에 포함함으로써 통합적인 판단 방법론을 탐색하고, 위치 추정 및 경로 계획에서의 활용 가능성을 제시한다.

• Journal of the Korean Society for Railway
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• v.13 no.1
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• pp.23-30
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• 2010

In the construction phase, the existing schedule management system by 4D CAD has been difficult to check for a status and progress of construction product in real-time because it simulates only VR (virtual reality) object based on a planned schedule. This study suggests a construction schedule management system by telepresence technique that can visualize progress status in real-time by using 4D CAD system based on remote monitoring. The telepresence methodology and system were developed in the study and they were verified for a railway construction project. The developed system can examine the status and progress of construction because it can compare 4D simulation based on planned schedule with real-time site images through web-camera.

• Elastomers and Composites
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• v.44 no.4
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• pp.366-372
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• 2009

The present study covers the optimal design for a lens module in a mobile phone camera by using the design of experiments (DOE) and finite element (FE) analysis. FE analyses are performed to investigate the effect of design parameters on the amount of torque required to assemble a barrel and a housing part. The DOE approach is then performed to optimize the design parameters in order to maintain an appropriate torque with less variations.

• Journal of Korean Society for Geospatial Information Science
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• v.11 no.4 s.27
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• pp.13-19
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• 2003

This paper Non-metric digital video camera against subject of study, stone cultural heritages such as stone pagodas. Non-metric digital video camera can perform functions that metric or quasi-metric camera cm not. Thus we could easily acquire still-images which are for analyzing from moving picture part. When we analyze a location of cultural heritages using a Non-metric digital video camera, we could get a accuracy from 2mm to 4mm. Finally, it can be said that study also suggests the efficient measurement when planning to restore prototype of cultural heritages in the future and providing specific three-dimensional information on them.

• The Optical Journal
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• s.108
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• pp.44-46
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• 2007

열상광학시스템용 초정밀가공기술 분야에 주력해온 프리시젼옵텍스(대표.한상현.www.poptechs.com)는 군수분야에서만 활용도가 집중되어 있는 적외선카메라 기술을 민수분야에까지 다양하게 사용할 수 있도록 기술 개발에 매진하고 있다. 설립 4년여 만에 자체 사옥을 마련하고 '제2의 창업'을 다짐한 이 회사는 올해 1차적 목표로 모듈상품을 선보이며 적외선카메라 시스템 전문회사로 거듭나기 위한 일보 전진을 계획하고 있다.

• Journal of the Korea Computer Graphics Society
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• v.14 no.2
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• pp.9-17
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• 2008

We propose a method to determine camera parameters for character motion, which confiders the motion by itself. The basic idea is to approximately compute the area swept by the motion of the character's links that are orthogonally projected onto the image plane, which we call "Motion Area". Using the motion area, we can determine good fixed camera parameters and camera paths for a given character motion in the off-line or real-time camera control. In our experimental results, we demonstrate that our camera path generation algorithms can compute a smooth moving camera path while the camera effectively displays the dynamic features of character motion. Our methods can be easily used in combination with the method for generating occlusion-free camera paths. We expect that our methods can also be utilized by the general camera planning method as one of heuristics for measuring the visual quality of the scenes that include dynamically moving characters.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.24 no.3
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• pp.281-288
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• 2006

Recent increase in the number of pixels of a non-metric digital camera encourages to use it for close-range photogrammetry such as modeling cultural asset and buildings. However, these cameras have to be calibrated far close-range photogrammetry application. For self-calibration, an appropriate pbotograrnmetric network and object field should be designed. In this paper, we studied the effect on self-calibration accuracy changes according to the change of the number of ground control points, dimensions of the ground control points, and the combination of images. We concluded that self-calibration with three photos including a vertical photo can give the stable accuracy of interior orientation parameters and 10 ground control points on a plane can give high accuracy for object reconstruction.

• Proceedings of the KSRS Conference
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• 2007.03a
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• pp.97-102
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• 2007

3차원 공간정보는 2차원에 비해 공간적 현실감이 뛰어나기 때문에 최근 경관분석，도시 계획 및 웹(Web) 을 통한 지도 서비스 분야 등에서 이에 대한 관심이 증가하고 있으나，3차원 공간 정보의 기하학적 특성상 기존의 2차원 공간정보에 비해 데이터 량이 방대해 지고 있으며 이를 활용한 또 다른 콘텐츠 제작과 빠르고 효율적인 처리에 많은 문제점을 가지고 있다. 본 논문에서는 이러한 문제점을 해결하기 위한 방법으로 위성 및 항공으로부터 획득한 DEM(Digital Elevation Model)을 이용하여 생성된 3차 원의 지형정보와 도시 모델링 및 텍스처 맵핑 과정을 통해 획득한 정보를 기반으로 하여 각각의 위치에 카메라를 설정하고， 설정된 카메라 위치를 기반으로 Camera Matrix를 구한다. 이렇게 획득한 카메라의 정보엔 깊이 정보를 포함하고 있는데，깊이 정보를 기반으로 하여 3차원의 워핑(Warping)작업을 통해 계층적 핍이 영상(LDI)를 생성하고，생성된 계층적 깊이 영상을 이용하여 3차원의 공간정보를 구현한다.