• Title/Summary/Keyword: 3-D Information

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A Study on 3D View Design of Images and Voices Integration for Effective Information Transfer (효과적 정보전달을 위한 영상정보의 3D 뷰 및 음성정보와의 융합 연구)

  • Shin, C.H.;Lee, J.S.
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.35 no.1B
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    • pp.35-41
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    • 2010
  • In this paper, we propose a 3D view design scheme which arranges 2D information in a 3D virtual space with a flexible interface and voice information. The scheme allows the user interface of the 2D image in 3D virtual space anytime from any view point. Voice information can be easily attached. It is this simple and efficient image and voice information arrangement in 3D virtual space that improves information transfer.

Comparative Experiment of 2D and 3D DCT Point Cloud Compression (2D 및 3D DCT를 활용한 포인트 클라우드 압축 비교 실험)

  • Nam, Kwijung;Kim, Junsik;Han, Muhyen;Kim, Kyuheon;Hwang, Minkyu
    • Journal of Broadcast Engineering
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    • v.26 no.5
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    • pp.553-565
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    • 2021
  • Point cloud is a set of points for representing a 3D object, and consists of geometric information, which is 3D coordinate information, and attribute information, which is information representing color, reflectance, and the like. In this way of expressing, it has a vast amount of data compared to 2D images. Therefore, a process of compressing the point cloud data in order to transmit the point cloud data or use it in various fields is required. Unlike color information corresponding to all 2D geometric information constituting a 2D image, a point cloud represents a point cloud including attribute information such as color in only a part of the 3D space. Therefore, separate processing of geometric information is also required. Based on these characteristics of point clouds, MPEG under ISO/IEC standardizes V-PCC, which imitates point cloud images and compresses them into 2D DCT-based 2D image compression codecs, as a compression method for high-density point cloud data. This has limitations in accurately representing 3D spatial information to proceed with compression by converting 3D point clouds to 2D, and difficulty in processing non-existent points when utilizing 3D DCT. Therefore, in this paper, we present 3D Discrete Cosine Transform-based Point Cloud Compression (3DCT PCC), a method to compress point cloud data, which is a 3D image by utilizing 3D DCT, and confirm the efficiency of 3D DCT compared to V-PCC based on 2D DCT.

Improvement Scheme for 3D Land Geospatial Information Construction (3차원 국토공간정보 구축 개선방안 연구)

  • Park, Jun-Ku;Cho, Woo-Sug;Noh, Myoung-Jong;Song, Nak-Hyeon;Kim, Min-Chul
    • Journal of Korean Society for Geospatial Information Science
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    • v.16 no.4
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    • pp.89-99
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    • 2008
  • In Korea, currently 10 local governments have completed the construction of the 3D Land Geospatial Information, since the pilot project started in 2004 and many other local governments are additionally constructing the 3D Land Geospatial Information. Technical Guidance for the 3D Land Geospatial Information has made out the construction methodology and concept of the ordinances in 2006 by the basis of the research results of the pilot project for the 3D Geospatial Information construction in 2005. But the result that applied the existing 3D Land Geospatial Information of the local governments, many problems rearing up on the methods and expression accuracy of the 3D Land Geospatial Information. This research analyzed and derived problems of established guideline for the zero-defects construction of the 3D Land Geospatial Information and it is aim at the present standardized criterion of the reestablished and method of the 3D Geospatial Information construction items. Improvement scheme of the 3D Land Geospatial Information is considered to be contribute to the standardized good quality of 3D Land Geospatial Information construction and its application.

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A Study on 3D CAD/NFEA modeling Interface of A-Type RC Bridge Pylon (A-Type RC 주탑의 3차원 정보모델과 비선형 구조해석모델 생성을 위한 인터페이스 연구)

  • Eom, Ji-Young;Choi, Saem-Lee;Lee, Heon-Min;Shin, Hyun-Mock
    • Journal of KIBIM
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    • v.4 no.3
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    • pp.1-9
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    • 2014
  • As BIM application continues to increase in civil engineering, in this study, 3D information model for RC(Reinforced Concrete) bridge pylon was developed and verified its effectiveness at the structural-design stage. To define 3D information model of RC A-Type pylon, characteristics of pylon were analyzed and 3D model structure was constructed. The 3D information model, one of the core product of BIM, manages all information generated during all life-cycle of a structure and consequently maximizes the efficiency of utilizing information. Also, this study proposes interface module between input data in structural analysis and 3D model of RC pylon. The module can create the input data for non-linear structural analysis. It is essential to study on method of developing 3D information model and propose a structural analysis model by utilizing 3D model for the effective use of BIM techniques in construction industry. The results of this study can be used as the base data for developing the 3D information model of RC pylon in the structural analysis field.

Development of 3D Simulation Systems for the 3D Visualization of University Campus Building Information (대학 캠퍼스 건물 정보의 입체적 가시화를 위한 3D 시뮬레이션 시스템의 개발)

  • Kim, Sung-Ho
    • Journal of Digital Convergence
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    • v.11 no.11
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    • pp.327-333
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    • 2013
  • The campus has been composed of a very variety buildings. However, there is almost no easy way to see information about room number of each floor of the buildings and all buildings. For that reason, in this paper, we have developed a 3D simulation system for the 3D visualization of campus building information. Each building and cross section of floor was modeled in 3D based on the actual drawing. And texture mapping were using real photos. The user interface was divided into frames for menu and 3D viewer. When you select a building name from the menu, 3D viewer shows the selected building by zooming. And menu frame is shown the various information related to the building. Also when you select a room number of each floor, a separate web browser shows the cross section by VRML viewer. Conversely, when you click on the building in the 3D viewer, menu frame is shown the various information related to the building. This system is very useful in that provide realistic building information of campus.

A Study on the Algorithm for 3D Writing Support Software (3D 판서 소프트웨어용 알고리즘의 연구)

  • Kim, Doo-Hoon;Lee, Byung-Kwon;Seo, Yu-Jeong;Lee, Ju-Seong;Kwack, Hong-Kyu;Yoo, Gab-sang
    • Proceedings of the Korea Information Processing Society Conference
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    • 2012.04a
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    • pp.340-343
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    • 2012
  • 현재 상용화되고 전자칠판에 쓰이는 모든 소프트웨어는 2D 판서를 지원하는 소프트웨어였으나 최근 3D TV등의 지속적인 보급과 3D 전자칠판의 점차적인 보급으로 인하여 최근의 추세에 맞추어 3D 화면에 동작하는 3D 판서를 요구하고 있다. 업계에서는 점차 3D 판서가 대두됨에 따라 3D판서를 할 수 있는 새로운 기법이 등장해야 하는 시기이다. 본 논문은 3D 전자칠판의 하드웨어에 이용될 수 있는 알고리즘의 연구이다. 3D 전용 패널을 활용한 하드웨어에 최적화된 3D 판서 소프트웨어에 포함 될 방법론을 제시한다. 이를 위해 기존의 판서 소프트웨어의 방법론과 함께 기본적인 3D의 원리를 이용하여 구현된 알고리즘을 제안한다.

A Study on the 3-D Information Communication on the World Wide Web (웹에서의 3차원 정보 전달에 관한 연구)

  • 이수경;임창영
    • Archives of design research
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    • v.16 no.1
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    • pp.53-62
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    • 2003
  • This paper purports to propose a new logic of 3D information structure, based on the analysis of the features of the existing 3D information structures on the web, especially to help designers establish a proper design process and a guideline. So first it is needed to define the 3D information and 3D information transmission in general and to research the features of them. Next, focusing on the 3D information transmission on the World Wide Web, this paper takes a look at various qualities and related technologies of it, to analyze different forms of 3D information and classify them into some logical types of the information structure. Then the issues of the existing 3D information on WWW can be outlined, and with those results, this paper proposes what logic of information structure it should have to make an effective 3D information transmission.

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Korean 3D Models DB and Body Deformations for 3D Fashion Coordination (3D 패션코디를 위한 한국인 3D 모델DB와 인체 변형)

  • Choi, Woo-Hyouk;Shin, Min-Yung;Choi, Chang-Seok;Kim, Hyo-Sook
    • Proceedings of the Korea Information Processing Society Conference
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    • 2001.04b
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    • pp.1217-1220
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    • 2001
  • 본 논문에서는 한국인의 3D 모델을 구성하고, 개인 체형에 따라 3D 모델을 변형하여, 3D 패션코디 방법을 제안하고 있다. 한국인에 대한 다양한 체형을 표현하기 위하여, 성별, 체형별, 나이별로 세분화하여 3D 모델 36종을 구성하고 있다. 개인 체형에 대한 3D 모델을 얻기 위해 구성된 3D 모델의 높이 12 항목, 넓이 6항목, 두께 5항목, 둘레 13항목을 변형하고 있다. 나아가서, 셔츠와 치마의 의복 3D 모델의 체형변화에 따라 의복 3D 모델을 정합하고 있다.

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Current Status of the 3-D Spatial Information Systems for Local Government and Their Revitalization Plan (지자체 3차원 공간정보시스템의 현황 및 활성화 방향에 관한 연구)

  • Yun, Jeong-Mi;Kim, Tae-Woo;Suh, Yong-Cheol
    • Journal of the Korean Association of Geographic Information Studies
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    • v.14 no.4
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    • pp.22-32
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    • 2011
  • The 3-D spatial information systems are effective for systematical urban management and civil administration. They have more visibility than the 2-D spatial information systems with height information. However, the 3-D spatial information systems for local government were developed by central government's master plan of national spatial informatization. It means that the systems are biased toward the 3-D viewing as the visibility like a 3-D display and simulation, without reflected distinct characteristics of the local society. In order to utilize municipalities'3-D spatial information systems efficiently, above all, we have to understand the current status of municipalities'3-D spatial information systems and then have to search the ways applying actively. Therefore, we reviewed the current 3-D spatial information systems and discussed the development directions with central government's national spatial informatization master plans in order to perform properly on the 3-D spatial information system's excellent functions. We analyzed each system characteristics based on the applicability to civil administration which has the potential usage of spatial information. Additionally we suggested the development directions of 3-D spatial information systems for municipalities'through reviewing which civil administrative tasks 3-D spatial information can be applied. The consideration was based on the user demand research of the 3-D spatial information system in Chungcheongnam-do.

3D Font Library for Android Platform (안드로이드 플랫폼을 위한 3D 폰트 라이브러리)

  • Kim, KyoungYeon;Bae, HaYeun;Gwon, Ryu-Hyeok;Kim, Yoo-Sung
    • Proceedings of the Korea Information Processing Society Conference
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    • 2013.11a
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    • pp.1470-1473
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    • 2013
  • 본 논문에서는 안드로이드 플랫폼에서 3D 타이포그래피를 쉽게 표현할 수 있도록 지원하는 라이브러리를 설계 구현하였다. 현재까지 모바일 플랫폼에서 3D 타이포그래피를 지원하기 위한 라이브러리는 iOS에서 사용가능한 FTGL ES만이 공개되었고 이를 직접 안드로이드 플랫폼에서 사용할 수 없으며 제공되는 3D 표현 기능 또한 제한적이었다. 본 연구에서는 iOS용 FTGL ES를 안드로이드 플랫폼에서 사용할 수 있도록 변환하고 OpenGL ES기능을 활용하여 다양한 3D 폰트 표현을 지원할 수 있는 3D 폰트 라이브러리를 개발하였다. Freetype 라이브러리를 통해 폰트의 Glyph 정보들을 얻고 이를 이용해 테두리, 양각, 음각 등 다양한 3D 문자 표현 기능을 구현하였고, 공간상에서 문자들의 배치를 수학적으로 모델링하여 다양한 3D 문자 배치 기능을 구현하였다. 개발된 3D 폰트 라이브러리를 이용하여 다양하게 문자들을 3D 공간에 표현할 수 있으면서, 기존 3D 타이포그래피 표현 방법들에 비해 더 쉽고 빠르게 3D 타이포그래피를 표현할 수 있도록 지원한다.