• Title, Summary, Keyword: Vector Graphics

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A Design of Vector Processing Based 3D Graphics Geometry Processor (벡터 프로세싱 기반의 3차원 그래픽 지오메트리 프로세서 설계)

  • Lee, Jung-Woo;Kim, Ki-Chul
    • Proceedings of the IEEK Conference
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    • pp.989-990
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    • 2006
  • This paper presents a design of 3D Graphics Geometry processor. A geometry processor needs to cope with a large amount of computation and consists of transformation processor and lighting processor. To deal with the huge computation, a vector processing structure based on pipeline chaining is proposed. The proposed geometry processor performs 4.3M vertices/sec at 100MHz using 11 floating-point units.

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SVG Editing System based on XML for Structured Graphic Representation (구조화된 그래픽 표현을 위한 XML 기반의 SVG 저작 시스템)

  • Kim Tak-chen;Kim Jin-soo;Jung Hoe-kyung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.8 no.8
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    • pp.1661-1669
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    • 2004
  • A rapid development of Internet is changing users' desire from existing static contents to dynamic and diverse ones. Thus the SVG provides more affluent and sophisticated graphic expressions than an existing method based on bitmap, it can faithfully display vector graphics without scarifying any functions or the problem of device compatibility. In addition, it allows indexing, searching, storing, and sharing by the description of the logical structure of graphics. Since there are, however, very few people who know the complex SVG syntax and make use it, an editing system, which enables users to utilize the SVG graphics easily, has been in need. Therefore, in this thesis, we do research on basic technology on the SVG, design and make an editing system for SVG documents. The system, therefore, provides uses with a user-friendly editing interface and enables them to write graphic objects easily, and generates complex SVG documents automatically.

Implementation of Khronos OpenVG 1.0 Standard for Vector Graphics (Khronos OpenVG 1.0 벡터 그래픽 표준 API 구현)

  • Lee, Hwan-Yong;Lee, Jun-Young;Oh, Ae-Kyung;Sung, Hyun-Chan;Park, Ki-Hyun
    • Journal of the Korea Computer Graphics Society
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    • v.12 no.3
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    • pp.7-11
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    • 2006
  • 최근 임베디드 환경에서 2차인 Vector Graphics에 대한 요구는 크게 증가하고 있으며, Flash Lite, SVG등의 응용이 이미 널리 사용되고 있다. 반면 이러한 응용을 지원하기 위한 API의 표준은 전무한 실정이었다. OpenVG 1.0은 임베디드 시스템을 위한 미디어 표준 제정 기관인 Khronos Group에서 제정한 2차원 벡터 그래픽스를 위한 API (Application Programming Interface)로 2005년 8월 발표되었다. 본 논문에서는 OpenVG 표준에 대해 간략히 소개하고 (주)휴원에서 세계최초로 상용화 개발에 성공한 AlexVG Engine의 개발과정과 결과에 대하여 설명한다.

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New feature and SVM based advanced classification of Computer Graphics and Photographic Images (노이즈 기반의 새로운 피쳐(feature)와 SVM에 기반한 개선된 CG(Computer Graphics) 및 PI(Photographic Images) 판별 방법)

  • Jeong, DooWon;Chung, Hyunji;Hong, Ilyoung;Lee, Sangjin
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.24 no.2
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    • pp.311-318
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    • 2014
  • As modern computer graphics technology has been developed, it is hard to discriminate computer graphics from photographic images with the naked eye. Advances in graphics technology has brought a lot of convenience to human, it has side effects such as image forgery, malicious edit and fraudulent means. In order to cope with such problems, studies of various algorithms using a feature that represents a characteristic of an image has been processed. In this paper, we verify directly the existing algorithm, and provide new features based a noise that represents the characteristics of the computer graphics well. And this paper introduces the method of using SVM(Support Vector Machine) with features proposed in previous research to improve the discrimination accuracy.

Visualization of Convolution Operation Using Scalable Vector Graphics (SVG를 이용한 컨벌루션 연산의 시각화)

  • Kim, Yeong-Mi;Kang, Eui-Sung
    • The Journal of Korean Association of Computer Education
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    • v.10 no.1
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    • pp.97-105
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    • 2007
  • In this paper, visualization of convolution operation is presented, which is implemented by scalable vector graphics (SVG). Convolution operation is one of the basic essential concepts in the area of signal and image processing. However, it is difficult for students to intuitively understand the operation of convolution since it is mainly based on mathematical representation. We present the visualization of convolution operation and its applications which are implemented by SVG. The effects of the proposed approach have been analyzed by interviews. It has been seen that the proposed visualization of convolution operation could be effectively applied to learn the convolution operation and its applications.

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Design and Implementation of Self-networking and Replaceable Structure in Mobile Vector Graphics

  • Jeong Gu-Min;Na Seung-Won;Jung Doo-Hee;Lee Yang-Sun
    • Journal of Korea Multimedia Society
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    • v.8 no.6
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    • pp.827-835
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    • 2005
  • In this paper, self-networking and replaceable structure in vector graphics contents are presented for wireless internet service. The wireless networks over 2G or 3G are limited in the sense of the speed and the cost. Considering these characteristics of wireless network, self-networking method and replaceable structure in downloaded contents are introduced in order to save the amount of data and provide variations for contents. During the display of contents, a certain data for the contents is downloaded from the server and it is managed appropriately for the operation of the contents. The downloaded materials are reflected to the original contents using replaceable structure. Also, the downloading and modification are independent of the play. In this implementation, the data consists of control data for control and resource data for image, sound or text. Comparing to the conventional methods which download the whole data, the amount of the transmitted data is very small since only the difference is downloaded. Also, during the play of the contents, the changes are adopted immediately. The whole functions are implemented in wireless handset and the various applications are discussed.

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Design Automation System for Concrete Slab Bridge using Vector Graphic (벡터 그래픽을 이용한 콘크리트 슬래브교의 설계자동화)

  • Lho, Byeong Cheol;Kim, Jeong Hoon;Kim, Jong Woo
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.12 no.2
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    • pp.181-192
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    • 2008
  • A Web-based design automation system for concrete slab bridge has been developed to manage the resultant documents as well as to speed up the repetitive design process. Manipulation of engineering drawings in the Web page is one of the critical functions needed for Web-based design automation. Active Server Pages (ASP) is used to that collects design parameters in the database, and eXtensible Markup Language (XML) and XML-based vector graphics are expected to facilitate the representation of engineering drawings in the Web page. In this paper, we present how we used XML and Scalable Vector Graphics (SVG) to compose engineering drawings and represent them in the Web page. XML Data Island we designed to define drawing components turned out effective in manipulating the engineering drawings in the Web page.

Tessellation-independent Approximation of Normal Vectors (Tessellation에 독립적인 법선 벡터 근사에 대한 연구)

  • Ahn, Jaewoo;Kim, Woongsoon
    • Journal of the Korea Computer Graphics Society
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    • v.4 no.2
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    • pp.29-32
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    • 1998
  • When rendering polyhedral models, normal vectors at polygon vertices are necessary for smooth shading. The most commonly used technique of approximating a vertex normal vector by averaging normal vectors of faces around the vertex yields, however, different results on different tessellations Further, continuous deformation of models may cause abrupt discontinuous changes in normal vector directions. In this paper, a variation of the above technique is proposed to avoid these problems. Specifically, it uses a weighted average of normal vectors of faces around the vertex, where the weight of a face being the angular span of the two edges incident on the vertex.

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Effective design of 2d vector graphics rasterizer for mobile device (모바일용 2D Vector Graphics에 효율적인 Rasterizer 설계)

  • Park, Jaekyu;Lee, Yeongho;Jeong, Junmo;Lee, Kwangyeob
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.221-224
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    • 2009
  • 본 논문에서는 OpenVG Specification에서 제안한 파이프라인을 기능별, 혹은 연산별로 그룹화 하여 하드웨어 구현에 적합한 새로운 파이프라인을 제안하였다. 래스터라이저에서는 스캔라인 알고리즘과 엣지 플래그 알고리즘의 장점들을 포함하는 스캔라인 엣지 플래그 알고리즘을 구현하여 적용하였으며, Non-Zero 룰을 만족하기 위해 엣지의 방향에 따라 Winding 횟수를 기록하기 위한 추가 버퍼를 이용하였다. 또한, 래스터라이저는 안티 앨리어싱을 위해 슈퍼 샘플링 과정을 수행한다. 액티브 엣지 생성 시 클리핑을 동시에 수행하여 이후 과정에서의 불필요한 연산을 줄였고, 액티브 엣지들의 정렬을 수행하지 않는 방법을 사용하여 처리 속도를 향상 시켰다. 본 연구에서 설계된 OpenVG Rasterizer는 크로노스 그룹에서 제공하는 샘플 이미지들을 사용하여 검증하였다.

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Architecture Exploration of Optimal Many-Core Processors for a Vector-based Rasterization Algorithm (래스터화 알고리즘을 위한 최적의 매니코어 프로세서 구조 탐색)

  • Son, Dong-Koo;Kim, Cheol-Hong;Kim, Jong-Myon
    • IEMEK Journal of Embedded Systems and Applications
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    • v.9 no.1
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    • pp.17-24
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    • 2014
  • In this paper, we implement and evaluate the performance of a vector-based rasterization algorithm for 3D graphics by using a SIMD (single instruction multiple data) many-core processor architecture. In addition, we evaluate the impact of a data-per-processing elements (DPE) ratio that is defined as the amount of data directly mapped to each processing element (PE) within many-core in terms of performance, energy efficiency, and area efficiency. For the experiment, we utilize seven different PE configurations by varying the DPE ratio (or the number PEs), which are implemented in the same 130 nm CMOS technology with a 500 MHz clock frequency. Experimental results indicate that the optimal PE configuration is achieved as the DPE ratio is in the range from 16,384 to 256 (or the number of PEs is in the range from 16 and 1,024), which meets the requirements of mobile devices in terms of the optimal performance and efficiency.