• IEIE Transactions on Smart Processing and Computing
• /
• v.5 no.3
• /
• pp.178-184
• /
• 2016

This paper proposes a new path-finding scheme using viewpoint-invariant landmarks. The scheme introduces the concept of landmark detection in images captured with a vision sensor attached to a mobile robot, and provides landmark clues to determine a path. Experiment results show that the scheme efficiently detects landmarks with changes in scenes due to the robot's movement. The scheme accurately detects landmarks and reduces the overall landmark computation cost. The robot moves in the room to capture different images. It can efficiently detect landmarks in the room from different viewpoints of each scene. The outcome of the proposed scheme results in accurate and obstacle-free path estimation.

• Proceedings of the KIEE Conference
• /
• 2008.10b
• /
• pp.276-277
• /
• 2008

본 논문에서는 효율성 높은 차선 인식 및 장애물 검출을 위한 알고리즘을 제안한다. 입력된 영상을 배경영상과 도로 영상으로 나눈 후 도로영역에서 Hough 변환을 이용하여 차선을 검출 하도록 한다. 또한 자동차의 그림자와 같은 특징 정보를 활용하여 주행 중인 차량을 검출한다. 영상의 잡음을 최소화하기 위한 알고리즘을 적용하여 파선 인식률을 높일 수 있는 방법을 연구한다.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
• /
• 2003.11a
• /
• pp.1231-1232
• /
• 2003

This paper reports results of a recent survey of 184 Information Technology(IT) development practitioners and 90 User Interface (UI)/usability practitioners. This survey covered a broad range of issues including the respondents' profile, current development environment, usability and user-centered design (UCD) adoption issues in development, overall assessment of usability/UCD in Korea, and the most widely used methods and techniques. The results of this study are expected to provide an empirical basis for usability and UCD planning, training, adoption and execution in IT industry of Korea.

• Proceedings of the KIEE Conference
• /
• 2005.07d
• /
• pp.2790-2792
• /
• 2005

This paper proposes a path-planning algorithm that enables a robot to reach the goal position while avoiding obstacles. The proposed method, which is based on dynamic programming, finds an optimum path to follow using a modified skeleton map method which exploits information on obstacle positions. Simulation results show the feasibility of the proposed method.

• Proceedings of the IEEK Conference
• /
• 2008.06a
• /
• pp.1057-1058
• /
• 2008

In this paper, the algorithm and the computer simulation of a effective homing navigation system are presented. it is a combination of Path integration by using population coding and neural network and simple avoidance obstacle algorithm. Also, through the computer simulation, we demonstrated the feasibility of the suggested method.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2003.06a
• /
• pp.1127-1130
• /
• 2003

This paper introduces histogramic in-motion mapping for real-time map building with the Eyebot in motion. A histogram grid used in HIMM is updated through three PSD sensors. HIMM makes it possible to make fast map-building and avoid obstacles in real-time. Fast map-building allows the robot to immediately use the mapped information in real-time obstacle-avoidance algorithms. HIMM has been tested on the Eyebot. The Eyebot sends PSD data to computer and computer builds a 3D-Map based on PSD data.

• 제어로봇시스템학회:학술대회논문집
• /
• 1990.10a
• /
• pp.722-725
• /
• 1990

This paper proposes a new path planning method for obstacle avoidance of mobile robot. In order to achieve easy planning of the path, a simple representation of the empty space is achieved based on thinning algorithm. The proposed Planning technique facilitates the direct use of information obtained by camera. Comparing to the V-graph method, the task of determining the shortest path from the resulting skeleton of empty space is optimized in terms of number of computation steps. The usefulness of the proposed method is ascertained by simulation.

• 제어로봇시스템학회:학술대회논문집
• /
• 1987.10b
• /
• pp.83-86
• /
• 1987

A vision algorithm is presented for the separation of near objects from distant objects. In the algorithm, a difference field of a stereo pair of images is computed to obtain the range information and the median filter is used for the suppression of distant objects. The objects within a given distance is segmented by thresholding the gray scale cross-section of the median filtered difference field. The experiment is performed in a laboratory setting.

• Korean Journal of Oriental Medicine
• /
• v.13 no.3
• /
• pp.21-27
• /
• 2007

Most of studies on tobacco have researched it as economic or cultural factor. These studies, certainly, have the value of their own. But from time to time these studies have brought about romantic view regarding tobacco, and have been an obstacle to approach it as a medical factor. Thus this thesis will introduce documents of tobacco as medical factor. Through it we will be able to furnish researchers with information to treat poison caused by tobacco.

• International Journal of Fuzzy Logic and Intelligent Systems
• /
• v.13 no.3
• /
• pp.171-177
• /
• 2013

This paper presents a fuzzy set method to enforce complementarity constraints (CCs) in a nonlinear interior point method (NIPM)-based optimization. NIPM is a Newton-type approach to nonlinear programming problems, but it adopts log-barrier functions to deal with the obstacle of managing inequality constraints. The fuzzy-enforcement method has been implemented for CCs, which can be incorporated in optimization problems for real-world applications. In this paper, numerical simulations that apply this method to power system optimal power flow problems are included.