2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing最新文献

Introduction to GPU Programming with GLSL 使用GLSL进行GPU编程简介

2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing Pub Date : 2009-10-11 DOI: 10.1109/SIBGRAPI-Tutorials.2009.9

R. Marroquim, André Maximo

{"title":"Introduction to GPU Programming with GLSL","authors":"R. Marroquim, André Maximo","doi":"10.1109/SIBGRAPI-Tutorials.2009.9","DOIUrl":"https://doi.org/10.1109/SIBGRAPI-Tutorials.2009.9","url":null,"abstract":"One of the challenging advents in Computer Science in recent years was the fast evolution of parallel processors, specially the GPU – graphics processing unit. GPUs today play a major role in many computational environments, most notably those regarding real-time graphics applications, such as games. The digital game industry is one of the main driving forces behind GPUs, it persistently elevates the state-of-art in Computer Graphics, pushing outstanding realistic scenes to interactive levels. The evolution of photo realistic scenes consequently demands better graphics cards from the hardware industry. Over the last decade, the hardware has not only become a hundred times more powerful, but has also become increasingly customizable allowing programmers to alter some of previously fixed functionalities. This tutorial is an introduction to GPU programming using the OpenGL Shading Language – GLSL. It comprises an overview of graphics concepts and a walk-through the graphics card rendering pipeline. A thorough understanding of the graphics pipeline is extremely important when designing a program in GPU, known as a shader. Throughout this tutorial, the exposition of the GLSL language and GPU programming details are followed closely by examples ranging from very simple to more practical applications. It is aimed at an audience with no or little knowledge on the subject.","PeriodicalId":113732,"journal":{"name":"2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127449165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 37

Digital Image Processing in Remote Sensing 遥感中的数字图像处理

2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing Pub Date : 2009-10-11 DOI: 10.1109/SIBGRAPI-Tutorials.2009.13

Leila Maria Garcia Fonseca, L. Namikawa, E. Castejon

引用次数: 69

Multiscale Methods for Image Processing: The Wavelet and the Scale-Space Approaches 图像处理的多尺度方法:小波和尺度空间方法

2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing Pub Date : 2009-10-11 DOI: 10.1109/SIBGRAPI-Tutorials.2009.11

L. Dorini, N. J. Leite

引用次数: 3

Geometric Algebra: A Powerful Tool for Solving Geometric Problems in Visual Computing 几何代数:在视觉计算中解决几何问题的强大工具

2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing Pub Date : 2009-10-11 DOI: 10.1109/SIBGRAPI-Tutorials.2009.10

Leandro A. F. Fernandes, M. M. O. Neto

{"title":"Geometric Algebra: A Powerful Tool for Solving Geometric Problems in Visual Computing","authors":"Leandro A. F. Fernandes, M. M. O. Neto","doi":"10.1109/SIBGRAPI-Tutorials.2009.10","DOIUrl":"https://doi.org/10.1109/SIBGRAPI-Tutorials.2009.10","url":null,"abstract":"Geometric problems in visual computing (computer graphics, computer vision, and image processing) are typically modeled and solved using linear algebra (LA). Thus, vectors are used to represent directions and points in space, while matrices are used to model transformations. LA, however, presents some well-known limitations for performing geometric computations. As a result, one often needs to aggregate different formalisms (e.g., quaternions and Plücker coordinates) to obtain complete solutions. Unfortunately, such extensions are not fully compatible among themselves, and one has to get used to jumping back and forth between formalisms, filling in the gaps between them. Geometric algebra (GA), on the other hand, is a mathematical framework that naturally generalizes and integrates useful formalisms such as complex numbers, quaternions and Plücker coordinates into a high-level specification language for geometric operations. Due to its consistent structure, GA equations are often universal and generally applicable. They extend the same solution to higher dimensions and to all kinds of geometric elements, without having to handle special cases, as it happens in conventional techniques. This tutorial aims at introducing the fundamental concepts of GA as a powerful mathematical tool to describe and solve geometric problems in visual computing.","PeriodicalId":113732,"journal":{"name":"2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130763370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Advanced Techniques in CBIR: Local Descriptors, Visual Dictionaries and Bags of Features CBIR的先进技术:局部描述符、视觉字典和特征包

2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing Pub Date : 2009-10-11 DOI: 10.1109/SIBGRAPI-Tutorials.2009.14

Eduardo Valle, M. Cord

引用次数: 22

Unleashing the Power of the Playstation 3 to Boost Graphics Programming 释放Playstation 3的力量来促进图形编程

2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing Pub Date : 2009-10-11 DOI: 10.1109/SIBGRAPI-Tutorials.2009.12

André Maximo, Guilherme Cox, C. Bentes, R. Farias

{"title":"Unleashing the Power of the Playstation 3 to Boost Graphics Programming","authors":"André Maximo, Guilherme Cox, C. Bentes, R. Farias","doi":"10.1109/SIBGRAPI-Tutorials.2009.12","DOIUrl":"https://doi.org/10.1109/SIBGRAPI-Tutorials.2009.12","url":null,"abstract":"This tutorial is intended for programmers who are interested in boosting their graphics application using a different architectural paradigm: the Cell Broadband Engine (Cell~BE). Our main idea is to focus on performance issues that can be efficiently handled by the multicore and vector facilities of the Cell~BE. We aim to offer to programmers an alternative way for high-performance graphics rather than the use of Graphics Processing Units (GPUs). The Cell~BE processor is the first implementation of a chip multiprocessor with a significant number of general purpose programmable cores. It is a heterogeneous multicore chip capable of massive floating point processing optimized for computation-intensive workloads that opens up the possibility of implementing highly parallel graphics application on a single chip. Our goal in this tutorial is to introduce the Cell~BE Architecture, show the main differences in its programming model, describe its development environment, and give some step-by-step examples of Cell~BE programs. We also introduce the usage of a Playstation 3 (PS3) as a high-performance Cell platform.","PeriodicalId":113732,"journal":{"name":"2009 Tutorials of the XXII Brazilian Symposium on Computer Graphics and Image Processing","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122656944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1