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Theses

Rendering Algorithms for Natural Scenes

Weiming Dong 1
1 ALICE - Geometry and Lighting
INRIA Lorraine, LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
Abstract : Aiming at developing feasible rendering algorithms for natural scenes, this thesis focus on complex optical phenomena, i.e. generate realistic images of natural objects in outdoor environments. What we mean by "realistic" is that the interactively generated appearance of the natural objects should well catch their optical characteristics. This property makes the rendering algorithms optimum in a simulation point of view.

To solve this problem, we propose several new algorithms from different angles. We first propose a framework that combines the traditional rendering system with spectra representation. With our framework, computing a scene with an object producing wave-based optics effects costs only a few additional seconds and is more efficient than previous methods for the same quality images. Then we introduce a system for modeling and visualization of flower color patterns. We build a connection between the user-controllable image synthesis and real botanical patterns. An additional application on the simulation of seasonal maples is also presented.

For the natural phenomena whose physical complexities are out of current rendering capability, we employ sample images especially natural textures, and decorate the natural scenes with texture synthesis. In this part, we first present approaches for tile-based texture synthesis that are based on the optimization of tile set quality within Genetic Algorithm-based framework. Then we present an interactive tool for anisotropic 2D texture synthesis guided by feature maps, which preserves some global perceptual characteristics of the example.
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https://tel.archives-ouvertes.fr/tel-01746531
Contributor : Weiming Dong <>
Submitted on : Wednesday, June 6, 2007 - 5:02:20 PM
Last modification on : Friday, February 26, 2021 - 3:28:08 PM
Long-term archiving on: : Friday, November 25, 2016 - 3:22:13 PM

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  • HAL Id : tel-01746531, version 3

Citation

Weiming Dong. Rendering Algorithms for Natural Scenes. Modeling and Simulation. Université Henri Poincaré - Nancy 1, 2007. English. ⟨tel-01746531v3⟩

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