Graphics Algorithms
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Numerical fundamentals and interactive computer graphics system for the nonlinear analysis of planar frames
Abstract Recent scientific and computational advances have facilitated the analysis of slender structural systems subject to instability. With the employment of more sophisticated numerical tools and algorithms, it is possible to accurately determine the critical points (limit and bifurcation loads) as well as the post-critical behavior of the structural sys
REM, Int. Eng. J.. Publicado em: 2019-06
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2. Geração de b-splines via FPGA / B-spline generation via FPGA
The b-splines are used in CAD/CAM/CAE systems to represent and define complex curves and surfaces, being adopted by the main computer graphics standards due to features like compact mathematic representation, flexibility and affine transformations. In 3D acquisition systems and integrated CAM-CNC systems, the use of the b-spline in the geometric information
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2012
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3. ESTRATÉGIAS PARALELAS INTELIGENTES PARA O MÉTODO BRANCH-AND-BOUND APLICADAS AO PROBLEMA DO CAIXEIRO VIAJANTE ASSIMÉTRICO / PARALLEL STRATEGIES FOR INTELLIGENT METHOD BRANCH-AND-BOUND TO APPLY traveling salesman problem ASYMMETRICAL
To the use of different architectures to process distinct portions of the same code, in order to maximize the performance, it is given the name Heterogeneous Computing. The Heterogeneous Computing is closely related to the high performance computing, and raised in a moment when the parallel computers, in that time with homogeneous execution, could no longer
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/07/2012
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4. Implementation and analysis of algorithms for motion estimation onto parallels processors type GPU / Implementação e análise de algoritmos para estimação de movimento em processadores paralelos tipo GPU (Graphics Processing Units)
A demanda por aplicações que processam vídeos digitais têm obtido atenção na indústria e na academia. Considerando a manipulação de um elevado volume de dados em vídeos de alta resolução, a compressão de vídeo é uma ferramenta fundamental para reduzir a quantidade de informações de modo a manter a qualidade viabilizando a respectiva transmis
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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5. CALCULUS OF AFFINE STRUCTURES AND APPLICATIONS FOR ISOSURFACES / CÁLCULO DE ESTRUTURAS AFINS E APLICAÇÃO ÀS ISOSSUPERFÍCIES
Differential Geometry provides a set of measures invariant under a set of transformations, in particular rigid, affine, and projective. The invariants by rigid motions are using almost all applications of computer graphics and geometric modeling. The affine case, since it is more general, allows to extend these tools. In this work, geometric properties are p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2011
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6. A scalable multi-projector system. / Um sistema de multiprojeção escalável.
Multi-projector systems offer both higher resolution and brightness by using a cluster of projectors, providing better visual quality when compared to traditional systems using a single high performance projector. When we consider the high cost associated with high-end projectors, the use of multiple low cost projectors can reduce considerably the cost of su
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/07/2011
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7. ALGORITMOS PARALELOS PARA MOTORES DE JOGOS EM MULTIPROCESSADORES / PARALLEL ALGORITHMS FOR MULTICORE GAME ENGINES
This thesis presents several techniques about parallel technology on electronic games. The thesis begins presenting several possible architectures for a game engine. A new architecture is presented, more flexible and adequate for the processors of the future that will have a higher level of parallelism. Following, a new technique for processing an octree, a
Publicado em: 2010
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8. WARPING-BASED METHODOLOGY TO CORRECT DISTORTION IN ENDOSCOPY SYSTEMS / METODOLOGIA BASEADA EM WARPING PARA CORREÇÃO DE DISTORÇÕES EM SISTEMAS DE ENDOSCOPIA
Images captured in endoscopy examinations show some distortion, the radial is the most visible. The radial distortion appears in images due to lens used in endoscopes. When a doctor or researcher is analyzing a distorted image, he can not see the exact size of an organ, tumor or lesion, due the magnification in the center of the image and a contraction in th
Publicado em: 2010
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9. CompressÃo de texturas utilizando sÃntese de texturas
In spite of graphics hardware advancements, graphics memory is still a scarce resource for usual applications. Besides, for most raster-based applications, the available bandwidth is one important limiting factor for increasing performance in the system. Texture compression addresses both of these problems. We introduce a new technique for texture compressio
Publicado em: 2009
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10. Uma arquitetura para o desenvolvimento de aplicações de visão computacional e processamento digital de imagens em sistemas embutidos
This paper describes an architecture of hardware and software that helps the development of applications of Computer Vision and Digital Image Processing in Embedded Systems, specically Smart Cameras. Smart Cameras are cameras that, in addition to image capturing, is capable of extracting application-specic information. Embedded systems are systems composed o
Publicado em: 2009
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11. IMAGE PROCESSING AND COMPUTER VISION ALGORITHMS FOR GRAPHICS CARDS PARALLEL ARCHITECTURES / ALGORITMOS PARA PROCESSAMENTO DE IMAGENS E VISÃO COMPUTACIONAL PARA ARQUITETURAS PARALELAS EM PLACAS GRÁFICAS
Diversas tarefas de Visão Computacional (VC) são formadas por operações aritméticas, replicadas sobre grandes volumes de dados. Esta caracterização descreve também as qualidades desejadas ao considerar uma aplicação qualquer como boa candidata a usufruir do crescente poder de processamento do hardware gráfico. Esta tese formula um conjunto de algo
Publicado em: 2009
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12. Utilizando mapas de conectividade fuzzy no desenvolvimento de algoritmos reparadores de imagens binárias 3D
A 3D binary image is considered well-composed if, and only if, the union of the faces shared by the foreground and background voxels of the image is a surface in R3. Wellcomposed images have some desirable topological properties, which allow us to simplify and optimize algorithms that are widely used in computer graphics, computer vision and image processing
Publicado em: 2008