• Proceedings of the Korean Society of Computer Information Conference
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• 2018.07a
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• pp.95-96
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• 2018

본 논문에서는 신체기관에 대한 거부감을 귀여운 스프라이트를 사용하여 거부감을 완화 시키고 플랫폼을 모바일로 사용해 언제 어디서나 쉽게 플레이 할 수 있는 게임을 개발한다. 신체 감염을 소재로 한 제안 게임은 신체를 보호하는 위주의 게임에 반대적인 신체를 감염시키는 흥미로운 느끼게 하는 게임으로 신체기관이 대해 거부감을 느낄 수 있는 요소를 귀엽고 심플한 리소스를 사용하여 거부감을 덜게 하였고 플랫폼을 모바일로 하여 장소에 상관없이 간단한 조작으로 플레이 할 수 있는 장점을 가진다.

• The Journal of Society for e-Business Studies
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• v.26 no.3
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• pp.55-66
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• 2021

The mobile application (APP) market is growing at an unprecedented speed. Amid such growth, the global platform providers are mandating exclusive in-app payments and charging 30% for platform commission fees. A serious tension has arisen between mobile global platform providers and local content providers. The present study attempts to analyze the domestic mobile game market and in-app payment commission fees. This study estimates the size of the domestic mobile game market and platform commission fees by directly using publicly available financial statements and footnote information of some representative listed mobile game firms. Also, the study analyzes the cost structures of the same sample firms and attempts to draw some implications on sustainable growths of the mobile game ecosystem. We estimated that, in 2019, the domestic mobile game market is around 4.9 trillion Won and the ensuing in-app payment commission fees market was 1.5 trillion Won. High market share firms display a proportional increase in in-app payment commission fees in relation to sales growth. This, in turn, makes the in-app payment commission fees a primary cost item far exceeding employee salaries and R&D expenses. During the same period, low market share firms generated a mere profit or experienced net loss. Analysis of the cost structure reveals that these firms are even more liable to higher in-app payment commission fee cost structure than high market share. Most constituents of the mobile game ecosystem are small business entrepreneurs. By employing a micro-level analysis, the study estimates that, in 2019, a representative median firm generates 530 million Won in sales. At the same time, it spends 190 million Won in employee salaries, 50 Won million in R&D and 190 million Won in in-app payment commission fees, respectively. In the absence of other cost items, these three cost items alone account for 73.8% of sales revenue. The results imply that a sustainable growth of the local mobile game market heavily depends upon the cost structure of such representative median firm, the in-app payment commission fees being the primary cost item of such firm.

• Journal of the Korean Society for Precision Engineering
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• v.26 no.10
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• pp.32-39
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• 2009

Most mobile devices provide limited input interfaces in order to maximize the mobility and the portability. In this paper, the author proposes a small cubic-shaped tangible input interface which tracks the location, the direction, and the velocity using MEMS sensor technology to overcome the physical limitations of the poor input devices in mobile computing environments. As the preliminary phase for implementing the proposed tangible input interface, the prototype design and implementation methods are described in this paper. Various experiments such as menu manipulation, 3-dimensional contents control, and sensor data visualization have been performed in order to verify the validity of the proposed interface. The proposed tangible device enables direct and intuitive manipulation. It is obvious that the mobile computing will be more widespread and various kinds of new contents will emerge in near future. The proposed interface can be successfully employed for the new contents services that cannot be easily implemented because of the limitation of current input devices. It is also obvious that this kind of interface will be a critical component for future mobile communication environments. The proposed tangible interface will be further improved to be applied to various contents manipulation including 2D/3D games.

• Journal of Korea Multimedia Society
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• v.11 no.6
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• pp.869-874
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• 2008

The work of creating character motion needs the higher professional technology and sense and the creating work of realistic and natural motion possess the most part of production term. In this paper we introduce the easy and convenient 3D animation authoring tool which makes the motion based on whole-body inverse kinematics and motion editing function. The proposed 3D animation authoring tool uses the forward kinematics using quaternion and whole-body inverse kinematics to determine the rotation and displacement of skeleton. Also, it provides the motion editing function using multi-level B-spline with quasi-interpolant. By using the proposed tool, we can make 3D animation easily and conveniently.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.32 no.8C
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• pp.788-799
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• 2007

This paper presents a watermarking method for copyright protection and illegal copy prevention of mobile 3D contents. The proposed method embeds copyright information and user's phone number into spatial domain and encryption domain of mobile animation data based on Buyer-Seller watermarking protocol. Furthermore, we insert user's operation key so that only authorized user can play 3D animation game in mobile device. We implemented the proposed method by using mobile animation tool, G3-SDK. From experimental results, we verified that the proposed method is capable of copyright protection and illegal copy prevention since the watermark can be well extracted against geometrical attacks, such as noise addition, data accuracy variableness and data up/down scaling.

• Journal of Digital Contents Society
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• v.14 no.3
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• pp.381-390
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• 2013

Almost all the mobile phone users already moved or are now moving away to smartphones for their various applications like games. If we are to speak about game applications, due to the performance limits of smartphones, 2D games are predominant over 3D games in every app. store. In this paper, we implement a 3D cube game application by porting an existing visual c++ irrlicht cube application to android platform library using the android Native Development Kit. After the porting is done, we add a few new features for more fun. Because the android NDK makes the existing C/C++ codes run directly on the android operating systems, we found by real execution tests that our 3D cube app. is well executed on a low-end android smartphone without any performance problem.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.1341-1347
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• 2006

기존의 모바일 게임의 경우에는 간단한 스토리를 갖는 2D 게임이 주종을 이루었다. 그러나 이 논문에서는 PC 에서만 가능하다고 여겨지던 3D 경영 시뮬레이션 게임을 모바일에 접목해 보고자 하였다. 시공간의 제약이 없으며 간편성과 이동성을 가진 모바일 게임의 장점을 살리며 3D 게임의 현실감, 시뮬레이션 게임의 재미를 모두 가질 수 있는 게임을 제작하고자 하였다. 게임의 기본적인 줄거리에는 고구려의 역사적 사건을 넣어서 게임을 하면서 고구려의 역사를 직접 느껴보도록 하였다. 세금의 단위나 정책에 관한 내용은 고구려의 실제 역사적 내용을 따랐으며 게임의 중간 중간에 시행되는 고구려의 정책 결정 과정을 통하여 고구려 왕의 생각과 흐름을 느끼도록 하였다. 게이머는 왕을 보조하는 입장에서 고구려의 정책을 간언할 수 있으며 왕의 정책을 지지할 수도, 반대할 수도 있다. 시간의 변화에 따라 왕도 변화하며 왕족의 계도도 고구려의 수순을 따르며, 왕의 역사적인 주요 정책도 게임을 통하여 자연스럽게 적용된다. 이로써 단순한 도시 경영이 주 테마가 아닌 고구려의 역사적 배경을 자연스럽게 삽입한 게임을 제작함으로써 게임의 사실성을 높였으며 한국적인 그래픽과 음악을 삽입하여 통적인 감각을 살렸다. 전본 논문에서는 3D 경영 시뮬레이션 게임 [한고을]의 전체적인 구성과 본 게임의 알고리즘을 소개하고 있다. 본 게임 개발의 가장 큰 목적은 모바일 기반의 3D게임 개발을 통한 사실적인 게임을 제작하고 탄탄한 스토리를 가진 게임 제작이다. 그러나 역사적인 내용을 사용함으로써 부가적으로 교육적인 효과도 있었다. 이 게임개발을 계기로 하여 급속하게 성장하고 있는 모바일 컨텐츠 시장에서도 컨텐츠의 수가 아닌 질적인 증가가 이루어 졌으면 하는 바램을 가진다.

• Journal of the Korea Institute of Building Construction
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• v.20 no.3
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• pp.289-296
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• 2020

This study suggests a methodology for automatically extracting placing information from 2D reinforced concrete details drawings and generating a 3D reinforcement placing model to develop a mobile augmented reality for bar placing work. To make it easier for users to acquire placing information, it is suggested that users takes pictures of structural drawings using a camera built into a mobile device and extract placing information using vision recognition and the OCR(Optical Character Registration) tool. In addition, an augmented reality app is implemented using the game engine to allow users to automatically generate 3D reinforcement placing model and review the 3D models by superimposing them with real images. Details are described for application to the proposed methodology using the previously developed programming tools, and the results of implementing reinforcement augmented reality models for typical members at construction sites are reviewed. It is expected that the methodology presented as a result of application can be used for learning bar placing work or construction review.

• Proceedings of the Korean Society of Computer Information Conference
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• 2015.07a
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• pp.149-150
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• 2015

게임 앱은 현재 앱 시장에서도 상위를 차지하는 분류 중에 하나이다. 게임을 앱 사용자에게 널리 이용하게 하기 위해서는 게임이 재미있고, 쉽게 접근할 수 있어야한다. 본 프로젝트에서는 인기리에 방영한 TV프로그램인 '더 지니어스'에 나온 보드게임들 중 1vs1(데스매치) 게임중 레이저장기, 결합, 인디언홀덤, 십이장기, 기억의 미로, 혹과 백을 온라인 안드로이드 모바일 게임으로 구현하였다. 게임을 만들기 위한 툴로는 세계적인 게임 개발 엔진으로 사용되고 있는 유니티(Unity)를 사용하였다. 유니티는 멀티플랫폼 3D/2D 게임 및 인터랙팁브(interactive) 콘텐츠를 말들 수 있는 개발 엔진이다. 본 프로젝트는 오목, 체스 등과같이 누구나 가볍게 즐길 수 있는 2인 실시간 보드게임으로 '더 지니어스'를 통해 게임을 접한 사람들의 흥미를 이용하여 쉽게 다가갈 수 있을 것이다.

• Journal of Korea Game Society
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• v.17 no.6
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• pp.19-28
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• 2017

There exist a variety of VR(Virtual Reality) contents that have been developed by the use of the latest VR technologies. Unlike the rapid advances in the recent VR devices however, the development of VR based game contents that fully utilize such cutting-edge devices has been lackluster. Using more accessible form of smartphone-based HMDs(Head-Mounted Displays), we compare two popular VR presentation methods(a realistic 3D VR karaoke room and a 360 degree video karaoke room) and analyze their users' immersion and realistic perception. We expect that our study can be utilized as a supporting guideline for future smartphone-based VR content developments.