Earticle

본 연구는 경관평가를 위한 3차원 데이터베이스 프레임워크를 제안하기 위한 기초연구로, 경관평가의 가장 기본형 데이터인 지형데이터를 구조 단계에서 재검토하여 새로운 다중 지형 정보 모델을 제안하였고, 이를 바탕으로 프로그래밍 기법을 사용하여 데이터 모델을 구현하였고, 또한 적용 가능한 경관 분석 도구들을 사용자정의를 통하여 재구성함으로써 다중 지형 정보 모델의 활용성 및 유용성을 검토하여 보았다. 그 결과 분석 소요 시간을 줄일 수 있었으며, 지형의 높이 정보 이외에 영상정보, 토지피복정보, 토지이용정보 등의 다양한 정보를 담는 복합적 지형정보모델의 가능성을 확인하였다.

This study is a basic research to develop a 3D database framework for landscape evaluation. A new multi Terrain Information Model is suggested by reviewing the stage of Terrain Data, the most basic data form for land space evaluation. In the next stage, based on this information model, a data model is implemented with programming technique. In addition, the usability and usefulness are studied by restructuring the applicable landscape evaluation tool with customization. In consequence of this study, the amount of analysis time is reduced. Also, it is identified the possibility of complex geospatial information model including imagery information terrain height information, land cover information and land use information in addition to terrain height information.

Smart home technologies have become, in the last few years, a very active topic of research. However, many scientists working in this field do not possess smart home infrastructures allowing them to conduct satisfactory experiments in a concrete environment with real data. To address this issue, this paper presents a new flexible 3D smart home infrastructure simulator, which is developed in Java specifically to help researchers working in the field of activity recognition. A set of pre-recorded scenarios, made with data extracted from clinical trials, will be included with the simulator in order to give a common foundation to test activity recognition algorithms. The goal is to release the SIMACT simulator with a visual scenario editor as an open source component that will benefit the whole smart home research community.

The purpose of this study is to establish 3D equipment database for BIM because of efficient using a BIM tool. In this study (or paper), we analysis the mechanism of using equipment database. And then, a based on this results we apply and conduct the results. Therefore we expect to make better using method of BIM and efficient planning method of equipment.

3D models applied to the domestic nuclear power plant industry are mainly 3D models for interference review at the design stage, and as construction is completed, the need for 3D models that consider the operation stage has emerged. Accordingly, it is necessary to develop a 3D model for an operating power plant based on the 3D model at the design stage, and a BIM-based information classification system was developed to link information at the operation stage. The nuclear power plant BIM-based 3D model information classification system diversifies the existing PBS classification system and separates the spatial classification system (Building Breakdown Structure) and the system classification system (System Breakdown Structure) to form a classification system and an object classification system (Object Breakdown Structure). was additionally configured. Currently, 3D models that are produced and managed based on physical files act as a significant limitation in the use of 3D models at the operation stage, causing the problem that 3D models are excluded at power plant sites and 2D drawings are mainly used. In order to solve these problems, a method to diversify the 3D model search system must be developed, and to do so, creating a 3D model database that takes object composition into account at the operation stage is an essential method. Therefore, in this study, Propose a method of creating a 3D model database based on the nuclear power plant BIM information classification system to utilize the nuclear power plant 3D model in the operational stage. As a result, it became possible to manage 3D models of nuclear power plants, which were previously managed based on files, as a database, and by applying an information classification system, it became possible to link detailed information down to the facility and component units from an operation and maintenance perspective.

We have released five Java Application Programming Interface (API) packages for viewing three-dimensional structures of proteins from the Protein Data Bank. To this end, the user interface of an earlier version has been refactored in an object-oriented fashion, in which refactoring is the process of changing a software system to improve its internal structure, without altering the external behavior. Various GUI design and features have been provided conveniently thanks to the Model-View-Control (MVC) model, which is an architectural pattern used in software engineering. Availability: The source code and API specification can be downloaded from https://sourceforge.net/projects/j3dpsv/.

인간 행동 분석은 컴퓨터 비전 및 패턴인식 분야에서 활발하게 연구가 이루어지는 분야이다. 이러한 행동 분석하고 평가하기 위해서는 다양한 환경과 종류의 제스쳐를 포함하고 있는 데이터베이스의 구축이 필수적이다. 본 논문에서는 총 40명의 사람에 대하여 일상생활에서 일어날 수 있는 14개의 정상 제스처, 위급한 상황에서 발생할 수 있는 10개의 비정상 제스처 그리고 30개의 명령형 제스처를 수집한 KU(Korea University) 제스처 데이터베이스를 소개한다. 각각의 제스처는 스테레오 카메라를 통해 얻어진 2차원 제스처 동영상, 3차원 동작 카메라를 통해 얻어진 3차원 모델의 좌표 정보 그리고 2차원 실루엣 동영상을 포함하고 있다.

현재 21세기 지식정보화사회와 유비쿼터스국토의 기반을 조성하는 3차원 국토공간정보의 구축을 위한 품질 관리의 중요성이 강조되고 있다. 통합품질관리를 통한 3차원 국토공간정보 품질관리의 향상은 공급자가 효과적으로 데이터를 갱신하고, 사용자가 최상의 자료를 취득할 수 있게 해준다. 본 연구는 기존 3차원 품질관리와 사례분석를 통하여 3차원 국토공간정보 품질관리개선안을 마련하고자 하였다. 본 연구에서는 첫째, 3차원 국토공간정보 품질관리의 개념을 수립하였고 둘째, 3차원 국토공간정보 품질관리의 범위와 내용 및 절차는 구체적인 세부 항목으로 분류하여 설정하였으며, 마지막으로 구축지침 개선안에 따라 3차원 국토공간정보의 구축 공정과정별로 품질관리표 등 품질과 관련된 개선사항을 도출하였다.

Recently, The importance of a quality control for implementing 3D geospatial database has being emphasized to build a 21st century knowledge society and an ubiquitous land. The improvement of 3D geospatial database quality control through establishing an integrated quality control makes data suppliers update data efficiently and users get high quality data. The purpose of this study was to derive the improvement plan of 3D geospatial database quality control through the analyses of the existing 3D geospatial database quality control and case studies. The results of this study are as follows. Firstly, we defined the concept of 3D geospatial database quality control. Secondly, we set the boundary, factors and process of 3D geospatial database quality control through classifying it in detail. Lastly, we drew improvement contents such as the quality control checklist by implementation process according to the improvement plan of 3D geospatial database implementation.

본 논문에서는 중국 현지 염색 기업의 열 센서망에 적용 가능한 원격 가상 현실 제어 플랫폼에서 실행할 수 있는 데이터베이스 액세스를 가상 현실 모델링 언어 (VRML)를 소개하였다. 또한, 3차원 실시간 자료 시각화를 위한 가상 현실 모델링 언어-액티브엑스 서버 페이지(VRML-ASP)를 소개하였다. 나아가 이와 관련된 스크립트도 다루었을 뿐만 아니라, 열 센서 노드와 센서 영역에서의 움직임을 분석하였다. 이 데이터베이스 프레임워크는 마이크로칩에서 발표한 마이와이$^{TM}$($MiWi^{TM}$)의 표준에 최적화되었다. 이러한 분석 결과를 근거로, 시스템 구성에 따라 가상 현실 모델링 언어-액티브엑스 서버 페이지(VRML-ASP) 데이터 액세스 프레임워크가 가상 현실 원격 산업 공정 제어 시스템을 위한 하나의 경쟁력 있는 데이터 관리 해결책이 될 수 있음을 확인할 수 있었다.

A Virtual Reality Modeling Language (VRML) database access in remote virtual reality control platform for dyeing enterprise $MiWi^{TM}$ thermal sensor network is presented in this paper. The VRML-ASP framework is introduced for 3D real-time data plotting in this application. The activities of thermal sensor nodes and sensor area are analyzed. The database access framework is optimized for $MiWi^{TM}$ wireless sensor networks. The experimental results show that VRML-ASP database access framework could be a reliable and competitive data-manage candidate for targeted virtual reality remote industrial visualization application.

본 논문에서는 웹 기반 3차원 가상 문화재 데이터베이스에 대해 기술한다. 가상 문화재를 위한 3차윈 모델링 기법으로서 영상기반 모델링 기법 및 레이저 스캐닝 기반 모델링 기법 에 대한 연구를 수행하였다. 디지털 문화재 데이터베이스 구축을 위해 3차원 가상 문화재 모델의 데이터 구조를 XML을 기반으로 설계 하였다. 또한 ASP 기술을 이용하여 웹 기반 3차원 사이버 문화재 관리 및 검색 시스템 구현하였다.

최근 인터넷에는 3차원 그래픽 데이터를 이용하는 그래픽 응용 프로그램들이 증가하고 있다 이에 따라 색상, 질감, 모양, 공간관계 등의 3차원 그래픽 데이터의 특징 정보를 이용한 검색에 관련된 많은 기법이 제안되고 있다. 그러나 효율적인 3차원 그래픽 데이터의 모델링이나 데이터베이스 저장 기법에 대한 연구는 미진한 실정이다. 따라서 본 논문에서는 XML 기반의 3DGML로 모델링된 3차원 그래픽 데이터를 데이터베이스에 저장하고 SQL을 이용하여 3차원 그래픽 데이터를 내용기반으로 검색할 수 있는 시스템을 제시한다. 3DGML로 모델링된 3차원 그래픽 데이터에서 의미 있는 객체들을 추출하여 관계형 데이터베이스에 저장하는 객체단위 데이터베이스 매핑 기법을 제시하고, 이 데이터베이스로부터 3차원 그래픽 데이터 객체의 특징 정보와 3차원 장면의 설명정보 및 장면에 포함된 객체간의 공간 관계 등을 이용한 SQL 질의를 보인다.

Recently, there have been increased many 3 dimensional graphic applications in Internet. Thus, a growing number of methods have been proposed for retrieving 3-D graphic data using their 3D features such as color, texture, shape, and spacial relations. However, few researches focus on 3D graphic modeling and database storage techniques. In this paper, we introduce a system that can store 3D graphics data modeled by XML-based 3D graphics markup language, 3DGML, and support content-based retrievals on 3D data by using SQL. We also present a mapping technique of 3DGML to relational database. The mapping process includes the extraction of semantic information from 3DGML and translate it into relational format. Finally, we show examples of SQL queries which use the 3D information contained in a 3D scene such as objects, 3D features, descriptions and scene-object component hierarchy.

A hierarchical motion control system for animation of 3D human character is implemented using the motion database in realtime. The proposed motion control system consists of coordination controller for gait timing and balancing of walking motion, joint servo controller for realistic limb movement, and motion database for goal-directed character animation which makes time-consuming animation relatively easy task. As one example among the various applications of the proposed motion control system. We present a simple virtual reality system in which the motion control system plays a central role in generating realistic motion of virtual human character.

A Building Information Model (BIM) is an attempt to simulate the process of building structures in a three-dimensional (3D) digital space. While the technology is usually applied to structured buildings, bridges, and underground facilities, it is rarely applied to an unstructured environment of earthwork operations. If a BIM is used for earthworks, the 3D simulation can be used for construction equipment guidance and earthwork management. This paper presents a real-time, 3D earthwork BIM that provides a 3D graphical simulation of excavators in conjunction with geographic modeling. Developing a real-time, 3D earthwork BIM requires handling a variety of factors, such as geographical information and vehicular movement. This paper mainly focuses on the management of these attributes and provides a database design for storing and retrieving data. In an example application, a prototype of the 3D earthwork BIM is presented to understand what it would provide when used during earthwork operations at a construction site.

In the computational molecular analysis, 3D structural comparison for protein searching plays a very important role. As protein databases have been grown rapidly in size, exhaustive search methods cannot provide satisfactory performance. Because exhaustive search methods try to handle the structure of protein by using sphere set which is converted from atoms set, the similarity calculation about two sphere sets is very expensive. Instead, the filter-and-refine paradigm offers an efficient alternative to database search without compromising the accuracy of the answers. In recent, a very fast algorithm based on the inter-atomic distance has been suggested by Ballester and Richard. Since they adopted the moments of distribution with inter-atomic distance between atoms which are rotational invariant, they can eliminate the structure alignment and orientation fix process and perform the searching faster than previous methods. In this paper, we propose a new 3D shape descriptor. It has properties of the general shape distribution and useful property in screening the molecular database. We show some experimental results for the validity of our method.

Turbulent properties of the wake of a circular cylinder were measured The diameter of the cylinder is l0mm and the Reynolds number is 420. A new 3D-PTY system was constructed and a genetic algorithm (GA) was introduced in order to increase the number of instantaneous three-dimensional velocity vectors. In the GA two fitness functions were introduced in order to enhance the correspondences of the particles. The measurement system consists of three CCD cameras, Ar-ion laser, an image grabber and a host computer. More than 3000 instantaneous three-dimensional velocity vectors were obtained by the system. The database of the turbulent properties of the circular cylinder was constructed by the constructed 3D-PTV system.

인터넷 사용자들이 정적인 정보 페이지 검색의 형태를 벗어나 인터넷상에서 프로그램을 실행하여 정보를 해석하고 볼 뿐만 아니라, 변경하고 새롭게 창조할 수 있는 동적인 정보를 제공하기 위해 가장 보편적인 3차원 데이터, 3D MAX-Studio의 텍스트 출력물인 ASE 포맷 파일을 파싱하여 렌더링 해주는 3D Viewer 프로그램 구현 하고, 이를 ActiveX 컴포넌트인 OCX로 만들어 웹 페이지 상에서 실행 가능하게 한다. 그리고 데이터의 효율적 관리와 사용자와의 상호작용을 위하여 ASE 모델들을 위한 데이터베이스를 구축하여 사용자 상호작용적인 3D View Web Service를 실현한다. 이를 통하여 인터넷을 통한 실시간적인 정보 교환이나, 네트워크상의 가상공간 내에서의 공통 업무 작업의 가능성을 내다 보았다.