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GPU-based implementation of adaptive octree texture painting technology research

Author: LiHang
Tutor: DangGang
School: National University of Defense Science and Technology
Course: Computer Science and Technology
Keywords: Octree Adaptive octree textures GPU Texture Retrieval Pixel -level auto painting techniques
CLC: TP391.41
Type: Master's thesis
Year: 2009
Downloads: 30
Quote: 0
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Abstract


At present, although the two-dimensional image based on the traditional 2D texture mapping definition has been widely used, but it has many limitations. This is because a lot of space in the texture three-dimensional model parameterization is very difficult, such as those containing implicit surfaces, subdivision surfaces, and high density or high detail polygon mesh. D body texture is not an issue, by its spatial coordinates used directly as the texture coordinates, in a building element, while the body to get the texture coordinates, and achieve a uniform sampling, coordinates continuous and without distortions. But there is also a body texture problem is that as the resolution increases, the rapid growth of its memory footprint and even harder to achieve, which affects the body texture in the scientific imaging applications to use. Octree textures are a volumetric textures, the basic idea is the body element and the model surface intersects those nodes octree structure for storage, to achieve significant savings in memory space purposes. Octree textures provides an efficient means of storing and texture lookups, and thus become one of the most common three-dimensional texture mapping data structure. However, a higher resolution, octree textures still exist occupy too much memory problems and build too slow, so far only applied to the modeling of smaller objects. Based on octree textures definition and use this to build a new kind of based on GPU (graphics processing unit) to achieve adaptive octree textures. And traditional octree texture mapping algorithms, adaptive octree textures take up less storage space, but this GPU-based algorithm to achieve the texture query, so there is a faster search speed. In addition, in this paper the adaptive octree textures GPU implementation based on the introduction of the tri-linear interpolation and Mipmapping technology to improve the rendering. GPU implementation based adaptive octree textures based paper designs and implements a pixel-level auto-painting technology, which can be three-dimensional texture mapping method will be beautifully simple and effective two-dimensional images into three-dimensional model drawn surface, and keep the original image with high detail and realism. In the design and implementation process, for the problems, this paper has proposed and implemented a regional color, break repair methods, the final experimental results obtained good results.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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