• Journal of Digital Contents Society
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• v.15 no.1
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• pp.69-76
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• 2014

In this study, by using the control technique of the user using augmented reality technology, to provide a game system touch-based. The augmented reality technology, can be advantageously used vehicle is easily recognized as a technique for synthesizing (images, video, text) object of the virtual image of the real world. Augmented reality technology has been studied to make the application in various fields. Studies of natural marker-based marker and base are underway, but there is no sense of incongruity in reality research natural marker-based and has been studied much. By using the augmented reality technology natural marker-based In this paper, we implemented a game system. The system also has the advantage that can be absorbed in the game by using the techniques of the interaction through a user's touch. Touch interface-based, are available as well as user environments, even in mobile devices such as smart-phone and touch pad.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.215-220
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• 2006

오늘날 우리는 모바일 기기의 눈부신 성장과 보급으로 인해 누구나 손쉽게 모바일 게임을 즐길 수 있게 되었다. 많은 게임 제작 업체들은 모바일 게임개발에 총력을 기울이고 있고, 단말기 제조업체들 역시 게임 전용폰을 출시하는 등 모바일 게임에 대한 호응이 고조되고 있는 상황이다. 이는 모바일 게임이 시간과 공간적 개념을 뛰어넘는 이동성(Mobility)이라는 큰 장점을 가지고 있기 때문이다. 그러나 이러한 장점에도 불구하고 현재까지 모바일 게임의 컨텐츠는 기존의 다른 게임에 비해 그다지 큰 차별성을 가지고 있지 않다. 고스톱이나 단순한 퍼즐게임 등이 호응을 얻고 있기는 하지만 '이동성' 이라는 큰 장점을 살리기 위해서는 거 적극적이고 새로운 개념의 접근이 필요하기 때문이다. 더구나 요즘은 PSP 와 같은 막강한 휴대용 게임기가 등장하면서 휴대폰에서 즐기는 모바일 게임은 작은 화면이나 낮은 메모리 등의 한계로 인해 점점 더 그 자리를 내어주고 있는 실정이다. 그렇다면 '이동성'을 적극적으로 활용할 수 있는 모바일 개임 제작에 대한 새로운 접근방식은 어떻게 이루어져야 할까? 이를 위한 효과적인 방법으로 본 논문에서는 게임의 무대를 우리가 살고 있는 '현실-Reality'로 옮겨 올 것을 제안한다. 그렇게 되면 게이머는 모바일 기기가 가진 제약에서 벗어나 그 자신이 직접 현실세계를 배경으로 한 게임캐릭터가 되고, 물리적 이동에 따라 게임이 진행되는 전혀 새로운 방식의 모바일 게임을 경험할 수 있게 될 것이다. 현재 국내외적으로 이러한 실험적 시도가 조금씩 이루어지고 있기는 하지만 아직 호응은 그리 높지 않다. 그리하여 본 논문에서는 그러한 사례들을 조망하고 가장 효과적인 방법을 국내의 현실에 적합하게 적용할 새로운 모바일 게임의 방식을 제안하고자 한다. 연구사례로 제안 할 모바일 게임은 인터넷 미니홈피, GPS, 멀티미디어 메시지, 카메라 폰, 전자상거래의 기능을 통합하여 활용하는 'Dice Adventure Meeting'이라는 이름의 모바일 미팅 게임이며, 게임의 구체적인 시나리오를 살펴보면서 현실을 배경으로 한 새로운 모바일 개임의 제작에 대한 접근방법을 제시하고자 한다.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06d
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• pp.304-306
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• 2006

본 논문은 16비트 칼라 LCD 디스플레이 장치를 갖는 휴대용 단말기에 영상을 이용한 그래픽 사용자 인터페이스(Graphic User Interface : GUI)를 제공함에 있어 단말기의 저장 공간을 효율적으로 사용하기 위하여 대부분 비손실 영상 압축 기법을 사용하는데, 이들 압축 기법의 압축 효과를 높이기 위한 전처리 과정 방법에 대하여 기술한다. 전처리 과정은 일반적인 칼라 영상의 각 8비트로 구성된 R, G, B 컴포넌트를 16비트로 구성된 RGB 비트 수에 맞도록 원 영상의 칼라를 조정, 16비트로 축소된 칼라 영상에서 사용된 칼라 수를 계산하는 단계 칼라 수가 사용자가 입력한 칼라수의 임계값 보다 작은 경우 인덱스 칼라 이미지를 만드는 단계, 인덱스화된 영상과 칼라 수가 임계값 보다 큰 경우 16비트 칼라 영상을 대상으로 영상을 겹치지 않게 분할하는 단계 분할된 영상의 각 블록 단위로 Run의 평균 개수가 가장 많은 스캐닝 방법을 결정하는 단계 그리고 스케닝 순서에 따른 기존의 비손실 압축 기법을 적용의 순으로 이루어진다. 본 논문에서 기술한 전처리 단계를 거친 영상을 JPEG-LS에 적용하였을 경우 동일한 영상에서 약 $10{\sim}20%$의 압축 효율을 얻을 수 있었다.

• Journal of the Korea Society for Simulation
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• v.15 no.1
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• pp.77-85
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• 2006

The cost of downloading content from the Internet may be costly for mobile device users using its 3G connection, because the 3G connection cost to download data from the Internet is a function of the amount of data downloaded. This paper introduces an approach in which mobile devices, called peers, form an ad hoc network and share their downloaded content with others. As an example, spectators may want to collect/share information about players and game records in a stadium. In an art gallery, visitors may want to retrieve some background information about the displayed work from the nearby ad hoc network. In an outdoor class, a teacher may download today's topic files from the Internet, and all students may share the content with minimal or no cost paid. This is possible if mobile device has both a 3G interface and a wireless LAN interface. If the peers want to improve privacy md discourage traffic analysis when sharing content, this paper describes a low-delay anonymous connection between the sending peer and the receiving peer using two additional peers. Simulation results show that the transmission time overhead of the anonymous connection may increase 50% or less as the number of peers increase or the peers are scattered over the larger area.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37C no.11
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• pp.1094-1103
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• 2012

Recently, software industry regarding national defense increases system development of distributed simulation system of M&S based to overcome limit of resource and expense. It is one of key technologies for offering of mutual validation among objects and reuse of objects which are discussed for developing these systems. RTI, implementation of HLA interface specification as software providing these technologies uses Federation Object Model for exchanging information with joined federates in the federation and each federate has a characteristic that is supposed to have identical FOM in the federation. This technology is a software which is to provide the core technology which was suggested by the United state's military M&S standard framework. Simulator, virtual simulation, and inter-connection between military weapons system S/W which executes on network which is M&S's core base technology, and it is a technology which also can be used for various inter-connection between S/W such as game and on-line phone. These days although RTI is used in military war game or tactical training unit field, there is none in Korea. Also, it is used in mobile-game, distribution game, net management, robot field, and other civilian field, but the number of examples are so small and informalized. Through this developing project, we developed the core technique and RTI software and provided performance of COTS level to improve communication algorithms.

• 한국정보교육학회:학술대회논문집
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• 2011.01a
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• pp.241-246
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• 2011

There are many discussions nowadays about utilizing smartphones to create a mobile computing educational environment. The purpose of this study is to develope an application which addresses the growing importance of mental arithmetic maps in lower elementary grades. Considering current theories on developmental characteristics for the target levels I decided that a gesture based input interface increase the users concentration and interest. Students using this application will learn and reinforce the basics of the addition, subtraction, multiplication, and division of natural numbers. By removing the limitations of time and space as afforded by the convenience of a smartphone and utilizing a gesture based input interface we can combine an application which increases users mental arithmetic speed and precision with the enjoyment of a game.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.6
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• pp.1183-1188
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• 2016

Kinect sensor version 2 is a kind of camera released by Microsoft as a computer vision and a natural user interface for game consoles like Xbox one. It allows acquiring color images, depth images, audio input and skeletal data with a high frame rate. In this paper, using depth image, we present a surveillance system of a certain area within Kinect's field of view. With computer vision library(Emgu CV), if an object is detected in the target area, it is tracked and kinect camera takes RGB image to send it in database server. Therefore, a mobile application on android platform was developed in order to notify the user that Kinect has sensed strange motion in the target region and display the RGB image of the scene. User gets the notification in real-time to react in the best way in the case of valuable things in monitored area or other cases related to a reserved zone.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.7
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• pp.184-192
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• 2017

This study was a pilot test of serious educational game content(named Roly Poly 160) designed to enhance self-care by elderly diabetics. Roly Poly 160 was developed in eight steps (literature review, demand survey and consultation, extraction of serious content using games, development of Roly Poly 160, pretest for users, workshop for health care workers, final completion of Roly Poly 160 and user satisfaction survey of Roly Poly 160). Roly Poly 160 is intuitively structured in three modules (self-management, card games, and quiz games) that can be self-managed by the elderly and is designed based on six principles. First, we constructed an intuitive interface considering the age of users. Second, the menu was selected as the main menu for Koreans and calorie learning was made at the same time. Third, the calories and nutrients (carbohydrate, fat, protein, calcium, sodium) of selected foods are analyzed, and all test data recorded in the questionnaire chart are graphically displayed by year, month and week so that the change trends can be grasped at a glance. Fourth, necessary data were saved and output and used as educational data. Fifth, user data are made compatible and aggregated and up to 100 million members can be registered. Sixth, it is designed to be developed as a mobile app if necessary. Using Roly Poly 160, 119 diabetic patients were diagnosed with diabetes, and the satisfaction score was 4.26 out of 5. These findings indicate that Roly Poly 160 is appropriate as a diabetes self-care tool and suggests that there is a possibility to use it as a program to educate people about diabetes in public health centers, hospitals and clinics.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.1
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• pp.89-94
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• 2018

This paper investigated the design method of the smart sensor for implementing IoT (Internet of Things) service. The power supply of sensor consistently acquisting data is based on the energy harvesting technology and designed with piezoelectric transducer not affected by surrounding circumstances. The wireless communication interface for the transmission of data is designed with BLE (Bluetooth Low Energy). BLE is highly adequate wireless communication technology for low power consumption and short distance wireless communication. The main application of BLE is beacon whose usage range is extended from O2O (Online to Offline) service, navigator based on indoor positioning technology, and anti-theft/lost child prevention service to mobile game. This paper studied the method to extend wireless coverage for complementing the short wireless transmission distance of BLE. The wireless sensor network based on CATV network is proposed for the easy construction of BLE sensor network and extended wireless coverage.