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Research and Implemantation of Realistic Texture Mapping on3D Models

Author: QianShuo
Tutor: YaoZuo
School: Donghua University
Course: Computer Software and Theory
Keywords: texture mapping regional texture mapping triangular mesh model regiongrowing texture coordinate plane projection
CLC: TP391.41
Type: Master's thesis
Year: 2014
Downloads: 75
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Abstract


Texture mapping is the process that mapping the pixels of texture image to the pixels of the screen space. Texture mapping, on the one hand, can describe the surface details of3D models; on the other hand, greatly simplifies the process of modeling. In some cases, texture mapping is only for the region of model, which is called regional texture mapping.The subject is based on the National Natural Science Foundation Project "The application of computer-aided individualized human3D model in assessment of burn area". The texture mapping technology is mainly applied in the region of3D models. The target is getting the burn area from the photo to save in the2D texture space, then mapping to the right position of the3D human. The reason that do not use the three-dimensional color scanning but the texture mapping is mainly that the former requires too much of the scanning environment and it spends a lot of time and space in the registration process because of the point cloud with RGB. In addition, three-dimensional color scanning is still at the initial stage. The accuracy and details of insufficient is not enough.A method based on region growing and plane projection algorithms is proposed for regional texture mapping on triangular mesh models after the analysis and summary on different kinds of texture mapping methods. The subject also design and realize the texture mapping system and do large number of experiments on it.The work of this paper mainly includes:1. The paper proposed a3D region growing algorithm to ensure the integrity of the mapping area and cannot cause the broken. At the same time, users can change the location and size of the mapping area.2. Using plane projection method that projecting3D vertices onto the reference plane, we can create the relationship between the tow-dimension coordinate system and the texture coordinate system. Then the suitable texture coordinate of each3D vertex can be found.3. On interactive operation, user can modify the texture mapping by using keyboard and mouse. These modifications include the selection of the mapping region, the direction of texture mapping, and the size of texture and so on.4. The regional texture mapping system designed for testing and using, was built on the Visual Studio2008platform using C++language combined with VTK.The experiment compared and verified several key parameters on the effect of texture mapping to prove the accuracy, efficiency and robustness of the algorithm. The algorithm has been successfully used in experiments which proved the feasibility of this method. At the same time, the experiment have analyzed the efficiency and evaluated the quantification. Finally, this paper summarized the work of research and proposed some views about the development and the future of texture mapping.

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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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