• Korean Journal of Remote Sensing
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• v.32 no.5
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• pp.511-527
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• 2016

We propose a rotating stereo frame camera system to acquire indoor images with a low cost. For experiments, we selected a test site and acquired images using the proposed system and control points using a total station. Using these data, we generated various indoor 3D models using commercial photogrammetric software, PhotoScan. We then performed qualitative and quantitative analysis of the generated indoor 3D models to investigate the possibility of the indoor modeling using the proposed system. From the results, it is confirmed that the generated indoor models using the proposed system can be applicable to the services not inquiring high accuracy.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.1609-1611
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• 2013

녹색 도시 조성의 주요 요소인 수목(tree)을 대상으로 도시 대기오염 개선수준을 평가하는 연구가 활발하다. 그러나 측정을 통해 수집된 데이터는 수목의 종류와 밀도에 따라 실시간으로 직관적인 도시 대기오염 개선 정도를 판단하는 데 애로가 있다. 본 연구는 이 문제를 해결하는 데 일조하는 소프트웨어 도구를 제시한다. 본 연구에서 개발한 소프트웨어 도구는 대기환경을 개선할 지역별 대기환경측정 정보를 이용하여 3 차원 모델링과 Google Map 서비스를 매쉬업(mash-up)하여 가상으로 수목을 심고 이에 따른 도시 대기오염 개선효과를 시각화한다. 본 연구결과는 도시대기환경 개선을 위한 정책개발과 예산수립에 일조할 것이다.

• The KIPS Transactions:PartD
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• v.10D no.3
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• pp.489-500
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• 2003

Due to the rapid growth of Internet, modern software applications must support many web-based functionalities than traditional software applications. These web-based functional supports increase the complexity of software architecture and the cost of software development. Therefore, the development of an efficient environment that web characteristics are well reflected is the most important. In this thesis, we have presented an efficient environment for development of web applications. For the presented environment, after considering the web characteristics, we defined a Process for web applications and modeling environment. The Presented environment has three main functions : $\circled1$ it Provides a modeling environment for design of web-based applications, $\circled2$ it has a modeling language called WML(web-application modeling language), $\circled3$ it automatically extracts web pages from diagrams. As a result, using the three main functions of the presented environment, we can easily design, develop, and maintain the web applications.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.05a
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• pp.95-98
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• 2020

최근 스마트 홈에서 슬립테크를 제어할 수 있는 어플리케이션 개발 및 연구의 필요성이 높아지고 있다. 기존 스마트 홈 제어 어플리케이션들은 텍스트 형식의 UI, 직관적인 정보 제공의 부재, 스마트 스위치 수준의 서비스 제공 등의 문제점을 가지고 있다. 이러한 문제점을 개선하기 위해 본 논문에서는 증강현실과 3D 모델링을 통해 스마트 홈을 보다 직관적이고 편리하게 사용할 수 있는 슬립테크 제어 방법을 제안한다.

• Journal of Digital Contents Society
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• v.19 no.8
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• pp.1565-1573
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• 2018

The recent breakthroughs of multimedia computing have expanded its scope of application to the fields not been touched before. The reproduction of late artists' performance, especially dancers', which had put on the back burner until now, also beginning to shed the light. This study showed how to apply it to the reproduction of these late performers. Through this work, not only did we reduce the working time by applying the software to the manual process which has been dominantly practiced for reproducing the existing stage, but also made it possible to be reused in the subsequent work.

• The KIPS Transactions:PartD
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• v.16D no.3
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• pp.381-394
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• 2009

As a technique to enhance reusability for the created artifacts in software modeling process, the model driven method such like MDA has been applied. Unfortunately, the hierarchical and systematic MDA based development technique using UML is poor yet. This causes the problem that the MDA modeling with high consistency and reusability based on MDA metamodel is not being realized. To solve this problem, this paper proposes a MDA (PIM/PSM) component modeling technique using 2+1 view integrated metamodel. At first, the meta-architecture view model which can represents development process view and MVC view is defined. Then, the hierarchical integrated metamodels per view are addressed separately for modeling process and MVC at metamodel level on the hierarchy of the defined meta-architecture view model. These metamodels are defined hierarchically by layering the modeling elements in PIM and PSM pattern for UML models and GUI models. Appling the proposed metamodel to an ISMS application system, it is shown as a component modeling case study based on MDA. Through this approach, we are able to perform a component model with consistency and hierarchy corresponding to development process and MVC way. Accordingly, this may improve more independence and reusability of model.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.12
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• pp.2681-2690
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• 2010

This paper proposes 3D facial modeling system without using 3D scanner and camera or expensive software. This system enables efficient 3D facial modeling to cost reduction and effort saving for natural facial modeling. It detects edges of component of face using edge detection based on fuzzy logic from any 2D image of front face. It was mapped fitting position with 3D standard face model by detected edge more correctly. Also this system generates 3D face model more easily through floating and flexible control and texture mapping after fitting that connection of control point on detected edge from 2D image and mesh of 3D standard face model.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.6 no.4
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• pp.632-638
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• 2002

Extensible 3D(X3D) is a software standard for defining interactive web and broadcast-based 3D content integrated with multimedia. The data size of Web3D representation based on polygon meshes is so large that transferring practical data fast is a hard problem. This paper proposes 3D object structure, a new framework for compact 3D representation with high quality surface shape. By utilizing a free form surface technique, qualified surface are transferred with limited amount of data size and rendered. 3D graphic structure can be regarded ad both polygon meshes and free form surfaces. Therefore, it can be easily integrated to existing Web3D data formats, for example VRML ＆ XML. 3D object structure also enables modeling free form surface shapes intuitively with polygon modeling like operations.

• The Journal of the Korea institute of electronic communication sciences
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• v.17 no.5
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• pp.809-814
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• 2022

ADHD is a disorder showing inattentiveness and hyperactivity. Since symptoms diagnosed in childhood continue to the adulthood, it is important to diagnose ADHD and start treatments in early stages. However, it has the problems to acquire enough and accurate data for the diagnosis because the mental state of children is immature using the self-diagnosis method or the computerized test. In this paper, we present the classification method based on the CNN model and execute experiment using the EEG data to improve the objectiveness and the accuracy of ADHD diagnosis. For the experiment, we build the 3D convolutional networks model and exploit the 5-folds cross validation method. The result shows the 97% accuracy on average.

• Proceedings of the KAIS Fall Conference
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• 2012.05b
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• pp.461-465
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• 2012

본 논문에서는 태양광발전의 3상 계통연계형 인버터를 모델링하기 위하여, d-q좌표변환을 통한 상태방정식을 유도하고, 전류제어 알고리즘과 Sinusoidal PWM방식의 이론적 알고리즘 제시하였다. 이를 바탕으로 배전계통의 상용소프트웨어인 PSCAD/EMTDC를 이용하여 태양광발전의 모델링을 수행하였으며, 시뮬레이션 결과와 이론적인 수치해석과의 비교, 분석을 통하여 본 연구에서 제시한 모델링의 유효성을 확인하였다.