• Proceedings of the KIEE Conference
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• 2006.10b
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• pp.175-180
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• 2006

In this paper, we develope a type of humanoid robot which can express its emotion against human actions. To interact with human, the developed robot has several abilities to express its emotion, which are verbal communication with human through voice/image recognition, motion tracking, and facial expression using fourteen Servo Motors. The proposed humanoid robot system consists of a control board designed with AVR90S8535 to control servor motors, a framework equipped with fourteen server motors and two CCD cameras, a personal computer to monitor its operations. The results of this research illustrate that our intelligent emotional humanoid robot is very intuitive and friendly so human can interact with the robot very easily.

• Proceedings of the KIEE Conference
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• 2004.11c
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• pp.385-387
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• 2004

In this paper, we have designed a fingerprint cognition system based on the embedded Linux. The proposed algorithm in this paper use the wavelet transform to derive the special feature vector from the captured fingerprint and a probabilistic neural network is used to compare the feature vectors for the fingerprints. The system consists of server PC based on the Linux and the client based on the embedded Linux. The client is a Tynux box-x board using the PXA-255 CPU. For the acquisition of the fingerprint image, we use d the AS-S2 semiconductor sensor. The system is likely to be used to develop a police inspection system.

• Journal of Advanced Marine Engineering and Technology
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• v.25 no.2
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• pp.375-382
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• 2001

In this study, an adapted Turbo Coding Algorithm for reducing communication error of a fire detection system for marine vessels, especially image transmission via power lone. Because it is necessary that this system communicate larger and faster than previous method, this study carried out enhancement a decoding speed by adaptation CRC with Turbo Code Algorithm, improvement of metric method, and reduction of decoding delay by using of Center-to-Top method. And the results are as follows: (1) Confirmed that a Turbo Code is so useful methods for reducing communication error in lots of noise environments. (2)Proposed technology in this study speed increasing method of Turbo Coding Algorithm proves 2 times faster than normal Turbo Code and communication error reducing as well in the board made by VHDL software & chips ALTERA company.

• Journal of Families and Better Life
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• v.18 no.2
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• pp.191-202
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• 2000

The purpose of this study was to clarify the wall components of Sarang-taechong in the upper class houses of Chosun dynasty. Physical trace method was used for this study. The samples were taken from the Sarang-taechong of 6 traditional Korean houses; Yunkyungdang, the ancient Chusa estate, Sunkyojang, Chunghyodang, Yangjindant, Unjorn. The makor findings were summarized as follows; 1) The common components of each wall were pillars, sanginbangs(upper horizontal beams), hainbangs (lower horizontal beams), door and windows. Changbangs(wood eave pieces that suported decoration blocks), changyos(a pice of wood fitted between the tops of pillars and upper tori cross beams), and morums(the top wainscot board laid horizontally between the bottom beam and the bottom portion of a window frame) were additional. 2) The composition of every south wall was symmetrical and the other threes were mixed symmetrical and asymmetrical. 3) The image of wall was classified-fine, strong, and modera e, according to the symmetry or asymmetry of wall composition, the width of each components, the kind of window.

• Journal of the Korean Society of Industry Convergence
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• v.18 no.2
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• pp.75-81
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• 2015

This study proposes an articulated robot control system using an on/off-line robot graphic simulator with multiple networks. The proposed robot control system consists of a robot simulator using OpenGL, a robot controller based on a DSP(TMS320) motion board, and the server/client communication by multiple networks. Each client can control the real robot through a server and can compare the real robot motion with the virtual robot motion in the simulation. Also, all clients can check and analyze the robot motion simultaneously through the motion image and data of the real robot. In order to show the validity of the presented system, we present an experimental result for a 6-axis vertical articulated robot. The proposed robot control system is useful, especially, in the industrial fields using remote robot control as well as industrial production automation with many clients.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2017.06a
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• pp.237-240
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• 2017

최근 바둑에 대한 관심이 급증함에 따라 바둑에 관련된 연구가 많이 진행되고 있다. 바둑에 관련된 연구가 진행 되기 위해서는 많은 양의 바둑 데이터를 취득할 필요가 있다. 바둑 데이터 중 아직도 사람의 도움없이 취득하기 어려운 데이터로는 대표적으로 기보 데이터가 있다. 따라서 기보를 자동으로 저장하는 연구가 활발하게 진행 되고 있다. 기보를 자동으로 저장하는 연구 중 바둑돌이 착수될 위치를 예측하여 기보를 저장하는 시스템은 카메라의 정보를 취득하는 것으로부터 시작된다. 많은 양의 데이터를 수집하기 위해서는 일반 사용자가 사용할 수 있는 어플리케이션의 역할이 중요하다. 하지만 카메라의 정보를 취득하는 것은 어플리케이션의 환경을 구축하는데 어려움을 야기한다. 따라서 본 논문은 어플리케이션의 환경 구축 문제점인 카메라의 정보를 바둑판 최 외각 네 끝점과 비교적 간단한 방법으로 예측하는 방법을 제안한다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.10a
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• pp.921-924
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• 2004

This paper is to investigate a crack for plasma sprayed MCrAlY coated material by acoustic emission method in 4-point bending test. The CoNiCrAlY is coated on Inconel-718 by vacuum plasma spray process. Micro-hardness measurement was conducted by means of Micro Vickers-hardness indentor. The porosity of coating layer was measured using a SEM and Image Analyzer. AE monitoring system is composed of PICO type sensor, a wide band preamplifier(40dB), a PC and AE DSP(16/32 PAC) board. The AE count, Hit and energy of coating specimens is measured according to coating thickness.

• Journal of information and communication convergence engineering
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• v.15 no.3
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• pp.187-192
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• 2017

Autonomous driving vehicle research demands complex road and lane understanding such as lane departure warning, adaptive cruise control, lane keeping and centering, lane change and turn assist, and driving under complex road conditions. A fast and robust road lane detection subsystem is a basic but important building block for this type of research. In this paper, we propose a method that performs road lane detection from black box input. The proposed system applies Random Sample Consensus to find the best model of road lanes passing through divided regions of the input image under HSV color model. HSV color model is chosen since it explicitly separates chromaticity and luminosity and the narrower hue distribution greatly assists in later segmentation of the frames by limiting color saturation. The implemented method was successful in lane detection on real world on-board testing, exhibiting 86.21% accuracy with 4.3% standard deviation in real time.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04a
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• pp.733-735
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• 2004

게시판 시스템은 양방향으로 정보를 교환하는 정보 시스템으로서의 높은 효용을 지니고 있으며, 웹과 결합하여 다양한 정보 시스템의 핵심 요소로 자리잡고 있다. 또한 이미지 등의 멀티미디어 정보를 게시물에 포함하여 효율적인 정보 공유에 사용되고 있다. 그러나 지금까지의 게시판 시스템은 게시물의 내용에 접근하기 위해, 단순한 텍스트 패턴 매칭에 의존하고 있다. 이러한 접근 방식은 텍스트 중심의 게시판에서는 어느 정도 효용을 갖지만. 멀티미디어를 포함하는 게시판의 경우에는 적용되기 어려운 단점을 갖고 있다. 본 논문에서는 이의 해결을 위해 이미지 데이터를 포함하는 게시물에 대해 시맨틱 태깅을 할 수 있는 게시판 시스템에 관하여 논한다. 제안된 시스템은 사전에 정해진 태깅 정보가 코드에 고착되지 않고, 외부에서 지정한 시맨틱 태깅을 동적으로 수용하는 구조물 갖고 있다. 이러한 구조를 통하여 이미지의 종류나 성격에 가장 적합한 태깅을 동적으로 지정할 수 있게 되며. 의미 기반의 검색을 지원하게 된다.

• IE interfaces
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• v.10 no.1
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• pp.223-235
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• 1997

The process of determining the optimal tool path in PCB(printed circuit board) drilling operations is identical with that of solving a TSP(traveling salesman problem). However, the optimal solution will be ruined when a drill bit needs tracking back in its tool paths. The back tracking occurrences shorten a life of the main spindle and result in inaccurate mechanical movements. In this study, the performances of four heuristics(Nearest Neighbor, Convex Hull, Greatest Angle and Most Eccentric Ellipse) are evaluated to obtain feasible tool paths along with less number of back trackings for a large number of holes(more than 2000holes/bit) and to generate corresponding NC codes for a given CNC drill. Also, the operations of these algorithms are visualized to show a user the graphic image of tool visitation with PCB holes on a computer screen.