• 한국정보통신학회논문지
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• 제8권3호
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• pp.694-701
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• 2004

본 논문에서는 능동카메라 환경에서 카메라의 움직임에 의해 유발되는 광역움직임(global motion)과 이동물체에 의해 발생하는 지역움직임(local motion)을 분리한 후, 카메라 팬틸트를 제어하여 물체를 추적하는 특징기반의 추적 시스템을 제안했다. 제안한 시스템은 블록기반 움직임 계측을 통해 연속한 2 프레임 사이의 이동 움직임을 찾고, 이 움직임에서 카메라의 움직임으로 인한 광역 움직임을 제거함으로써 전경물체의 지역 움직임만을 추적한다. 이때, 배경만의 움직임만으로 카메라 움직임을 강건하게 계측하기 위하여, 블록기반 움직임에서 배경움직임을 분류하기 위한 지배적인 움직임 추출방법을 제시한다. 또한 분리된 지역움직임으로부터 잡음물체의 움직임을 제거하기 위하여 꼭지점 특징의 추적궤적 속성에 따른 군집화 알고리즘을 제안한다. 제안한 추적시스템은 여러가지 실험에서 좋은 결과를 보였다.

• ETRI Journal
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• 제44권3호
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• pp.450-461
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• 2022

The Gen-Z protocol is a memory semantic protocol between the memory and CPU used in computer architectures with large memory pools. This study presents the implementation of the Gen-Z hardware system configured using Gen-Z specification 1.0 and reports its performance. A hardware prototype of a DDR4 Gen-Z memory pool with an optimized character, a block device driver, and a file system for the Gen-Z hardware was designed. The Gen-Z IP was targeted to the FPGA, and a 512 GB Gen-Z memory pool was configured on an ×86 server. In the experiments, the latency and throughput of the Gen-Z memory were measured and compared with those of the local memory, SATA SSD, and NVMe using character or block device interfaces. The Gen-Z hardware exhibited superior throughput and latency performance compared with SATA SSD and NVMe at block sizes under 4 kB. The MySQL and File IO benchmark of Gen-Z showed good write performance in all block sizes and threads. Besides, it showed low latency in RocksDB's fillseq dbbench using the ext4 direct access filesystem.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.1247-1252
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• 2004

ATC(Automatic Train Control) system employed in Bundang urban transit is operated in accordance with automatic blocking equipment. Using AF(Audio Frequency) track circuits installed at a block section, the block signal is automatically controlled and the safety of train operation is supported. In this paper, we investigate the operation mode of bundang urban transit and analyze the operation algorithm of ATC on-board system.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2006년도 춘계학술발표논문집
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• pp.394-396
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• 2006

본 논문은 새로운 영상 압축 알고리즘 BOSS (Block-Based Object Selection System) 을 제안한다. 본 알고리즘은 디지털 감시시스템 (Digital Surveillance System: DSS)을 위한 영상 압축 부호화 기법으로서 영역분할을 통해 Macro block 단위로 물체 영역과 배경영역을 재구성해서 부호화에 이용하는 방식이다. 제안된 알고리즘은 매우 효율적인 압축 성능을 보여주며, 저 전송률 상황에서도 높은 질의 영상을 복원할 수 있다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.1092-1099
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• 2011

This paper is concerned with the ATO speed profile generation method in the moving block system. The ATO speed profile is calculated using the acceleration limit and the jerk limit to improve ride comfort. In addition, the speed limit and stop distance provided from ATP profile should be considered to ensure safety. In the moving block system, the speed limit and the stop position are frequently changed in real-time. Therefore, the ATO speed profile should be regenerated immediately according to change of the speed limit and the stop position, within the acceleration limit and the jerk limit. In this paper, the ATO speed profile generation method is proposed, which considers not only frequent changes of the speed limit and the stop position but also acceleration limit and jerk limit. Futhermore the simulation result is presented to verify usefulness of this method.

• 한국컴퓨터정보학회논문지
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• 제9권3호
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• pp.127-133
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• 2004

본 연구에서 개발하고자 하는 기기는 K형 열전대를 이용하여 온도를 제어 할 수 있는 온도제어 시스템으로써, 안정된 전압 레귤레이터, 22Bit 디지털 변환기와 분해능이 22Bit로 이루어졌다. 미소 전압을 25배 증폭 할 수 있게 하였고, 0～1200도 사이의 온도를 DC 0.1V～DC 4.7V내에서 제어하도록 설계하였다. PIC16C74로 Micro-controller의 software와 hardware의 블록 다아이 그램을 고안하였으며, VFD기능과 Power Block간에 인터페이스가 가능하도록 구성하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2010년도 춘계 학술논문 발표대회 1부
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• pp.13-16
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• 2010

This study is an Investigation on the Watertightness Properties of Rain-Block System on the Sliding-Roof Joint of Large-Span Membrane Structures. In this experimental, we test the watertightness performance of joint part of sliding door in roof of large span membrane structure(for pilot project) under environment of rain and wind. A shape of rain water blocking systems of joint part in sliding door verifies the defects and effects of water leakage prevention in precipitation with the wind conditions. For obtaining watertightness of large span membrane structures, it is necessary quality of joints and performance, and quality of membrane material of a retractable roof as well as a closed roof. Also, for obtaining quality in joints, it is essential to make a watertightness guideline for design of large-span membrane.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.140.2-140
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• 2001

In this paper, we develop the system which inspects the metal mask using area scan camera and belu type xy-table and introduce its inspection algorithm. Thes whole area of the metal mask is divides into several inspection block and the sixe of a inspection block is decided by FOV(Field of View). To compare with the camera image of each block, the reference image is made by gerber file. The ratation angle of the metal mask is calculated through the linear equation that is substituted two end points of horizontal boundary of a specific hole in a camera image for. To calculate the position error caused by belt type xy-table, hough-transform using the distances among the holes in two images os used. The center of the reference image is moved as much as the calculated position error to be coincide with the camera image ...

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1992년도 춘계학술대회 논문집
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• pp.297-300
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• 1992

For the most part of machine design, assembly drawing isaffected byits inserted parts. When a part is inserted in assembly, alreadyd stablished parting line is modified for reasonable representation. for example, break or trim fuction between the lines gives more recognizable drqwing. Most of parts is composed of such that point, line, arc, circle and block. If the part is composed of block, it is very difficult to operate because its attribution is unknown before exploding, but, It is very easy to operate except block. In this paper, it is required that basic feature recognition rules are caused by knowledge-based. This system which shows a good modify tool using AutoCAD system and ADS (Autocad Development System).

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2008년도 춘계학술대회 논문집
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• pp.249-251
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• 2008

In Factory Automation(FA) used by Programmable Logic Controller(PLC), Ladder Diagram(LD) is the most widely utilized and plays an important role in industrial control system. But recently, the study about Sequential Function Chart(SFC) is performed actively. When we program by SFC, generally, we design one routine from start to end. This method is difficult to design block control system, and we often make mistakes. In this paper, we propose the method that we design block control system and we analysis the difference of the method used this paper from conventional method.