• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.10a
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• pp.109-112
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• 2007

Definition-Enhancement of the digitalized image has been being made researches continuously due to application a camera to a mobile-apparatus and the advent of a digital camera. In particular, the inputted image from a sensor goes through the process of ISP(Image Signal Process) prior to output as a visual image. The high-frequency components are offset by LPF(Low Pass Filter) that eliminates the noise of high spatial-frequency at the moment. In this paper, we propose an algorithm that outputs more vivid image by using adaptive-HPF(High Pass Filter) that has apt coefficients for diverse conditions of an image edge, nevertheless we do not employ any Edge-Detection algorithm to enhance a blurred image.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.4 no.2
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• pp.96-102
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• 2011

In this study, we performed algorithm development of automatic symptom degree for patient with hallux valgus one of the representative foot disease of morden. And this study proposes an efficient automated technique that is different from the original analog diagnosis for treatment and surgery of hallux valgus using digital image process. And we used X-Ray images of both a normal and a patient with hallux valgus in the procedure. First, we marked the standard angle on the X-Ray image of normal through Overlap & Add technique. Then we created a standard image through thinning filter and roberts filter(edge detection algorithm). Second, we used sobel filter of edge detection algorithm on the X-Ray image of patient. Moreover, we went another overlap & add technique procedure with both normal and patient image that we made. With the output, we projected the display detection image onto the screen. Finally, with the display detection image, we could measure and project the diagnosis angle of hallux valgus. And this confirms that this method is much more practical and applicable for another orthopedics disease than the prior one.

• Journal of the Korea Society of Computer and Information
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• v.27 no.5
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• pp.93-100
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• 2022

Korea's ancestral culture has limited travel and contact due to Corona (COVID-19). In addition, Korean ancestral culture meets in person to commemorate the deceased. In this paper, we propose a non-face-to-face metaverse memorial platform service that can commemorate the deceased and perform ancestral rites in the cyber world (virtual reality) by applying the metaverse technology. The services proposed in the study consisted of a remembrance hall that displays the life story of the deceased, a ancestral hall that conducts ancestral rites for the deceased, and a deceased pavilion that checks the remains and wills of the deceased. In addition, the virtual reality device (HMD: Head Mounted Display) set the teleportation and content resolution to 4K to minimize dizziness. In particular, the priests applied interaction technology to provide an immersive service for ancestral rites between family members. The researched memorial hall metaverse service is a metaverse-based platform service that allows anyone to commemorate the deceased as a family unit in a non-face-to-face state rather than face-to-face.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2007.04a
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• pp.257-260
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• 2007

The government is spending a large amount of budget to establish NGIS due to the importance of geospatial information. This paper deals with the study of schema mapping technique which can efficiently establish military topographic DB forest layer using digital forest map and other existing geospatial DB. In order to accomplish this 1) each schema of these types of DB was analyzed then, 2) mapping table which connects related attributes was created and finally, 3) military topographical DB forest layer of the area of interest was efficiently established. This research was able to display solutions that resolved compatibility issues between existing geospatial DB of these types, established by the schema mapping techniques described in this research.

• Proceedings of the IEEK Conference
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• 2001.09a
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• pp.849-852
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• 2001

본 눈문에서는 뒤틀림, 응력, 압력[1], 토크, 가속도 등의 물리적인 동적 현상을 측정하여 수집된 데이터를 처리하기 위한 신호처리(Signal Processins) 기능이 결합되어 넓은 용도로 활용할 수 있는 센서 신호 수집 시스템을 구현하였다. 구현된 시스템은 data acquisition board 의 하드웨어와 소프트웨어로 나누어 볼 수 있다. 하드웨어의 구성은 아날로그부, 디지털부, 그리고 시스템 인터페이스 처리부로 되어 있다. 아날로그부에서는 센서신호를 받아서, PGA (Programmable Gain Amplifier)[2]와 Op-Amp를 사용하여 signal conditioning 처리하여 8차 Lowpass Filter 로 보낸다. Filtering 된 신호는 ADC (Analog to Digital Converter) 가 내장되어 있는 PIC(3) microcontroller로 보내져 AD변환과 디지털 신호 처리를 한다. 처리된 신호는 RS232 인터페이스를 통해 호스트 컴퓨터로 보내 사용자가 분석할 수 있도록 한다. 또한 LCD display 실시간으로 확인, 분석할 수 있으며 동시에analog output에서 센서신호의 특징을 분석 할 수 있도록 한다.

• Proceedings of the IEEK Conference
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• 2000.09a
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• pp.309-312
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• 2000

최근에 국내에서도 DTV 시험방송을 하고 있고 고해상도의 DTV 수상기도 개발되고 있다. DTV 수상기는 기본적인 TV 기능에 다양한 멀티미디어 기능을 더해 멀티미디어 단말기로서 역할을 할 것으로 기대된다. 이러한 DTV 수상기가 다양한 멀티미디어 인터페이스를 갖도록 하는 것은 기본 요구 사항이 될 것이다. 이중에 최근에 널리 보급되고 있는 디지털 카메라의 출력을 DTV 수상기를 이용하여 디스플레이 하는 것은 필수적인 기능이라 할 수 있다. 이러한 정지영상을 DTV 수상기에 디스플레이 하는 기능은 DTV set-top에서 Monitor를 통한 OSD(On Screen Display)에 적용할 수 있다. 따라서 본 논문에서는 JPEG 포맷의 정지영상 파일을 MPEG-2와 호환되는 파일로 변환하여 DTV 수상기에 출력하는 시스템을 개발하였다 Windows 환경에서GUI(Graphic User Interface)를 통해 JPEG Image를 디코딩 하여 영상의 픽셀 정보를 복원한 후에 다시 MPEG-2로 압축하여Transport Stream으로 변환하고. 이 stream을 PCI Card를 이용하여 VSB modulator의 요구 타이밍에 맞추어 LVDS 레벨로 출력하도록 하였다.

• Proceedings of the KSRS Conference
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• 1999.11a
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• pp.63-69
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• 1999

The purpose of this study is to develop Water Quality Management System(WQMS), which performs calculating pollutant discharge and forecasting water quality with water pollution model. Operational water quality management requires not only controlling pollutants but acquiring and managing exact information. A GIS software, ArcView was used to enter or edit geographic data and attribute data, and MapObject was used to customize the user interface. PCI, a remote sensing software, was used for deriving land cover classification from 20 m resolution SPOT data by image processing. WQMS has two subsystems, Database Subsystem and Modelling subsystem. Database subsystem consisted of watershed data from digital map, remote sensing data, government reports, census data and so on. Modelling subsystem consisted of NSPLM(NonStorm Pollutant Load Model)-SPLM(Storm Pollutant Load Model). It calculates the amount of pollutant and predicts water quality. This two subsystem was connected through graphic display module. This system has been calibrated and verified by applying to Mokhyun stream watershed.

• Journal of Multimedia Information System
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• v.3 no.3
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• pp.47-52
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• 2016

This research paper examines the usage of graphic imaging in Holographic Projections to further advance the medical field. It highlights the importance and necessity of this technology as well as avant-garde techniques applied in the process of displaying images in digital holography. This paper also discusses the different types of applications for holograms in society today. Different tools were utilized to transfer a set of a cancer patient's brain tumor data into data used to produce a 3D holographic image. This image was produced through the transfer of data from one program to another. Through the use of semi-automatic segmentation through the seed region method, we were able to create a 3D visualization from Computed Tomography (CT) data.

• Electronics and Telecommunications Trends
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• v.29 no.6
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• pp.31-42
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• 2014

2007년 애플의 아이폰 출시 이후에 본격적으로 터치센서 시장이 성장하면서, 최근에는 스마트폰 뿐만 아니라 태블릿 PC, 노트북 PC, AIO(All-in-One)-PC 및 DID(Digital Information Display) 등 각종 디스플레이 제품으로 응용이 확대되고 있다. 터치패널 시장은 장기적으로 이러한 IT 제품을 넘어 자동차 시장과 같은 타 분야로 확대될 잠재력이 높다. 터치센서 기술은 슬림화, 경량화, 다기능화 등을 지향하는 고기능화 전략과 시장지배력을 확보하기 위한 저가격화 전략이 상충되면서 단일 전극층 터치센서, 플랙시블 터치센서, 내장형 터치센서, 대면적 터치센서, 지문인식 및 디지타이저 등이 내재화된 다기능 융/복합 터치센서의 개발이 촉진될 것으로 예측된다. 본고에서는 이러한 터치센서 기술동향과 산업동향을 기술하고자 한다.

• Journal of the Optical Society of Korea
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• v.18 no.4
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• pp.406-413
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• 2014

An optical true-time delay beam-forming system using a tunable dispersion compensating module (DCM) for dense-wavelength division modulation (DWDM) and a multiwavelength fiber ring laser for a phased array antenna is proposed. The multiwavelength fiber ring laser has one output that includes four wavelengths; and four outputs that include only single-wavelength. The advantage of such a multiwavelength fiber ring laser is that it minimizes the number of devices in the phased array antenna system. The time delays according to wavelengths, which are assigned for each antenna element, are obtained from the tunable DCM. The tunable DCM based on a temperature adjustable Fabry-Perot etalon is used. As an experimental result, a DCM could be used to obtain the change of the beam angle by adjusting the dispersion value of the DCM at the fixed lasing wavelengths of the fiber ring laser in the proposed optical true-time delay.