• Title, Summary, Keyword: Vector Graphics

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A Design of 3D Graphics Geometry Processor for Mobile Applications (휴대 단말기용 3D Graphics Geometry Processor 설계)

  • Lee, Ma-Eum;Kim, Ki-Chul
    • Proceedings of the IEEK Conference
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    • pp.917-920
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    • 2005
  • This paper presents 3D graphics geometry processor for mobile applications. Geometry stage needs to cope with the large amount of computation. Geometry stage consists of transformation process and lighting process. To deal with computation in geometry stage, the vector processor that is based on pipeline chaining is proposed. The performance of proposed 3D graphics geometry processor is up to 4.3M vertex/sec at 100 MHz. Also, the designed processor is compliant with OpenGL ES that is widely used for standard API of embedded system. The proposed structure can be efficiently used in 3D graphics accelerator for mobile applications.

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Extracting Graphics Information for Better Video Compression

  • Hong, Kang Woon;Ryu, Won;Choi, Jun Kyun;Lim, Choong-Gyoo
    • ETRI Journal
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    • v.37 no.4
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    • pp.743-751
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    • 2015
  • Cloud gaming services are heavily dependent on the efficiency of real-time video streaming technology owing to the limited bandwidths of wire or wireless networks through which consecutive frame images are delivered to gamers. Video compression algorithms typically take advantage of similarities among video frame images or in a single video frame image. This paper presents a method for computing and extracting both graphics information and an object's boundary from consecutive frame images of a game application. The method will allow video compression algorithms to determine the positions and sizes of similar image blocks, which in turn, will help achieve better video compression ratios. The proposed method can be easily implemented using function call interception, a programmable graphics pipeline, and off-screen rendering. It is implemented using the most widely used Direct3D API and applied to a well-known sample application to verify its feasibility and analyze its performance. The proposed method computes various kinds of graphics information with minimal overhead.

A Parallel-Architecture Processor Design for the Fast Multiplication of Homogeneous Transformation Matrices (Homogeneous Transformation Matrix의 곱셈을 위한 병렬구조 프로세서의 설계)

  • Kwon Do-All;Chung Tae-Sang
    • The Transactions of the Korean Institute of Electrical Engineers D
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    • v.54 no.12
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    • pp.723-731
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    • 2005
  • The $4{\times}4$ homogeneous transformation matrix is a compact representation of orientation and position of an object in robotics and computer graphics. A coordinate transformation is accomplished through the successive multiplications of homogeneous matrices, each of which represents the orientation and position of each corresponding link. Thus, for real time control applications in robotics or animation in computer graphics, the fast multiplication of homogeneous matrices is quite demanding. In this paper, a parallel-architecture vector processor is designed for this purpose. The processor has several key features. For the accuracy of computation for real application, the operands of the processors are floating point numbers based on the IEEE Standard 754. For the parallelism and reduction of hardware redundancy, the processor takes column vectors of homogeneous matrices as multiplication unit. To further improve the throughput, the processor structure and its control is based on a pipe-lined structure. Since the designed processor can be used as a special purpose coprocessor in robotics and computer graphics, additionally to special matrix/matrix or matrix/vector multiplication, several other useful instructions for various transformation algorithms are included for wide application of the new design. The suggested instruction set will serve as standard in future processor design for Robotics and Computer Graphics. The design is verified using FPGA implementation. Also a comparative performance improvement of the proposed design is studied compared to a uni-processor approach for possibilities of its real time application.

Accelerating OpenVG and SVG Tiny with Multimedia Processors (멀티미디어 프로세서를 이용한 OpenVG 및 SVG Tiny의 가속)

  • Lee, Hwan-Yong;Baek, Nak-Hoon
    • Journal of The Korea Computer Graphics Society
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    • v.17 no.2
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    • pp.37-43
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    • 2011
  • OpenVG and SVG Tiny are the most widely used 2D vector graphics technologies for outputs in the various embedded environments including smart phones. Especially, to show high refresh rates on the high resolution screens, it is necessary to effectively accelerate them. Until now, OpenVG and SVG Tiny are available as hardware implementations such as the fully-dedicated graphics chips or full software implementations. Currently available vector graphics silicon chips are relatively expensive and require high power consumption. In contrast, previous full software implementations show lower performance even with almost 100% CPU usages, which would disrupt other multi-threaded applications, In this paper, we present a cost-effective way of accelerating both of OpenVG and SVG Tiny, based on the multimedia-processing hardware, which is wide-spread on the media devices and mobile phones. Through the effective use of these multimedia processors, we successfully accelerated OpenVG and SVG Tiny at least 3.5 times to at most 30 times, even with lower power consumption and lower CPU usage.

Implementation of OpenVG on Embedded Systems (임베디드 시스템을 위한 OpenVG 구현)

  • Lee, Hwan-Yong;Baek, Nak-Hoon
    • Journal of Korea Multimedia Society
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    • v.12 no.3
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    • pp.335-344
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    • 2009
  • Embedded systems and web browsers have started to provide two-dimensional vector graphics features, to finally support scalability of graphics outputs, while traditional graphics systems have focused on the raster and bitmap operations. Nowadays, SVG and Flash are actively used while OpenVG from Khronos group plays the role of a de facto low-level API standard to support them. In this paper, we represent the design and implementation process and the final results of an OpenVG implementation, AlexVG. From its design stage, our implementation aims at the cooperation with SVG-Tiny, another de facto standard for embedded systems. Currently, our overall system provides not only the OpenVG core features but also variety of OpenVG application programs and SVG-Tiny media file playing capabilities. For the conformance with the standard specifications, our system completely passed the whole OpenVG conformance test suites and the graphics output portions of the SVG-Tiny conformance test suites. From the performance point of view, we focused on the efficiency and effectiveness especially on the mobile phones and embedded devices with limited resources. As the result, it showed impressive benchmarks on the small-scale CPU's such as ARM's, even without neither any other libraries nor acceleration hardware.

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An OpenVG Vector Graphics Accelerator (OpenVG 기반 벡터 그래픽 가속기)

  • Choi, Y.;Hong, E.K.;Lee, G.H.;Shen, Y.L.;Kim, T.G.;Kim, H.G.;Oh, H.C.
    • Proceedings of the IEEK Conference
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    • pp.761-762
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    • 2008
  • This paper presents a hardware accelerator for accelerating vector graphics applications based on the OpenVG standard. Since our design mainly targets embedded applications, we focus on efficient uses of limited resources, especially the memory bandwidth. The designed accelerator can process the images of $640{\times}240$ pixels with moderate complexity at the rate of 30 frames per second.

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A Study on Perspective Display Using 3D Elevation Data with 2D Information Overlay (2차원 지형정보와 격자형 고도자료의 중첩도시 기법 연구)

  • 이병길;이상지
    • Journal of Broadcast Engineering
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    • v.2 no.1
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    • pp.36-44
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    • 1997
  • We propose 3D perspective display using elevation matrix data with 2D information overlay. This algorithm is based on ID scan-line method and we used color index of the newly developed raster map, VRRG(Vector Restored Raster Graphics). The proposed method allows the fast generation of perspective view of 3D data with 2D overlay and the fast selective display of the features of 2D overlay.

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Implementation of OpenVG API for Mobile Vector Graphics Accelerator (모바일 벡터 그래픽 가속기 설계를 위한 OpenVG API 구현)

  • Kim, Young-Ouk;Ro, Young-Sup;Oh, Sam-Kwan
    • Proceedings of the Korean Society of Computer Information Conference
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    • pp.251-255
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    • 2008
  • 최근 모바일 시스템의 성능이 향상되면서 다양한 형태의 동적인 메뉴 구성과, 메일 및 이차원 지도 등의 표현에 벡터 그래픽을 도입하고 있다. 모바일 기기에서 사용되는 벡터 그래픽 처리 기술은 Flash Lite, SVG(Scalable Vector Graphics)등이 널리 사용되고 있는데 두 가지 모두 소프트웨어 방식으로 사용되고 있다. 매크로미디어사의 Flash Lite는 연산에 많은 메모리를 필요로 하고, SVG는 웹 표준에 맞춘 스크립트 해석 기반으로 구동 속도가 느리다. 모바일 컴퓨팅 환경에서 벡터 그래픽스에 대한 필요성과 사용빈도가 증가함에 따라 메모리를 적게 사용하고 하드웨어 가속기를 지원 할 수 있도록 저 수준의 API(Application Programming Interface)인 OpenVG 1.0을 크로노스 그룹(Khronos Group)에서 제정하였다. 본 논문은 모바일 사용 환경에 맞추어 사용될 수 있도록 OpenVG 1.0에 기반한 API를 구현하고 실험하였다. 구현된 API는 느린 소프트웨어의 한계를 벗어나기 위해 하드웨어 가속기 설계에 적합하도록 각각의 API 블록 및 형태를 하드웨어 파이프라인 형태의 관점에서 설계하였고, 구현된 API를 윈도우즈 환경에서 기능을 검증하였다.

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GML Document Editing and Translation System based on Vector Graphic (벡터 그래픽 기반의 GML 문서 편집 및 변환 시스템)

  • Kim, Chang-Su;Yeom, Sung-Keun;Jung, Hoe-Kyung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.13 no.6
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    • pp.1058-1064
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    • 2009
  • According to development of Information Technology and generalization of internet, practical use field of geography information became various. Therefor various Geographic Information System (GIS) constructed to manage geography information efficiently. However, geography information data of various form is depending on graphic authorizing tool of various form being not normalized each other. So, OGC(Open Geospatial Consortium) proposed GML(Geography Markup Language) that describe normalized geography information data that can apply mutually and W3C proposed SVG(Scalable Vector Graphics) of vector base. In this paper creates GML data of XML base for geography information data processing to vector graphic object, and design and implementation of GML document editing and translation system that define code converter that create GML document through created graphic objects and change vector graphic to logic structure of XML base.

GML document editing and translation system based on GML and vector graphic (GML과 벡터 그래픽 기반의 GML 문서 편집 및 변환 시스템)

  • Kim, Chang-Su;Cho, Young-Soon;Cho, Tae-Beom;Bang, Jin-Suk;Jung, Hoe-Kyung
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.645-648
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    • 2009
  • According to development of Information Technology and generalization of internet, practical use field of geography information became various. Therefor various Geographic Information System (GIS) constructed to manage geography information efficiently. However, geography information data of various form is depending on graphic authorizing tool of various form being not normalized each other. So, OGC (Open Geospatial Consortium) proposed GML (Geography Markup Language) that describe normalized geography information data that can apply mutually and W3C proposed SVG (Scalable Vector Graphics) of vector base. In this paper creates GML data of XML base for geography information data processing to vector graphic object. and design and implementation of GML document editing and translation system that define code converter that create GML document through created graphic objects and change vector graphic to logic structure of XML base.

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