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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Normalpaint: uma ferramenta interativa de pintura de normal maps em modelos 3D

Gehling, Maurício Bammann 28 February 2007 (has links)
Made available in DSpace on 2015-03-05T13:58:26Z (GMT). No. of bitstreams: 0 Previous issue date: 28 / Bolsa para curso e programa de Pós Graduação / Este trabalho apresenta um novo modelo de criação e alteração de mapas de normais, usando uma interface intuitiva que se assemelha a um sistema de pintura. Estes mapas são cruciais para aplicações gráficas, processadas em tempo real, que buscam maior realismo visual. Principalmente jogos digitais atuais se utilizam desta tecnologia, permitindo recriar o visual complexo de um modelo geométrico tridimensional com muitos polígonos, em um modelo simplificado. Desta forma o jogo utiliza somente o modelo mais leve para processar, mas consegue renderizar detalhes no objeto que criam a ilusão de complexidade geométrica. O processo original de criação deste mapa de normal (também conhecido como normal map), é muito trabalhoso. Um artista deve criar o modelo otimizado que será utilizado pelo jogo, além de outro modelo que contém tantos detalhes geométricos quantos forem desejados. Este último modelo servirá apenas como base para a criação do normal map, utilizando algum software 3D que contenha uma ferramenta para / This work presents a novel model of creation and modification of normal maps, using a intuitive interface similar of a paint system. These maps are crucial to graphical applications, processed in real time, that claims better visual realism. Most digital games use this technology, allowing the recreation of the visual complexity of a dense geometric 3D model, in a simplified model. That way game utilize only the lighter model to process, but can render the details on the object that create the illusion of geometric complexity. The creation process of this normal map is very labor intensive. An artist must create the simplified model that will be used in game, besides another model that is as complex as desired. This last model will be used only as a reference to extract the normal map in a 3D software. Then the normal map is applied in the simpler model, that is rendered with the visual detail the normal map represent. This work presents a computacional model that propose the concept of eliminate the creati
2

Real-time vizualizace povětrnostních vlivů v terénu / Realtime Weather in a Landscape Visualisation

Vlček, Adam January 2009 (has links)
Thanks to the increasing computation power the complexity and dynamism of virtual reality is continuously improving. This work aims to examine influences of weather in a landscape and the means to simulate and dynamically visualize them in real time on the current personal computer hardware. The main goal is to find quick well looking approximations rather than a complex physically correct simulation. The work covers using modern programmable GPU not only for visualization but also as a powerful simulation instrument. The main topic is water movement in the terrain and its effects on it like erosion, snow melting and moisture impact on vegetation. This requires dynamic terrain texturing and algorithms supporting fast geometry and normals updates.

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