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Description: 二进制格式的STL文件，可用于测试STL编辑可视化软件
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Size: 15227 |
Author: zengxy1226@126.com |
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Description: 基于小波变换的三维模型提取技术的毕业论文,包括代码和答辩ppt.1．实现了三维模型的表示和规范化预处理过程，在此基础上，开发了进行检索实验的可视化特征提取实验平台。
2．结合球面调和变换获取旋转不变量具有降低特征向量维数的特性，实现了基于光线投射的特征提取方法，通过检索评价实验确定了参数的最佳取值。
3．分析了基本的光线投射方法和改进的光线投射方法的缺陷，提出了一种基于三维小波变换的特征描述方法。对光线投射算法进行了扩展，将切比雪夫采样点序列进行离散小波变换，然后利用球面调和变换获得旋转不变的特征向量。
4．将小波变换引入到体素表示的三维模型中，分别实现了表面体素小波变换和实体体素小波变换的特征提取，通过实验比较分析实体体素小波变换优于表面体素小波变换。
-Wavelet-Based Extraction of three-dimensional model of thesis, including the reply code and ppt.1. Three-dimensional model of the implementation and standardization of the express pre-treatment process, on this basis, developed a visual search experiment of feature extraction experiment platform.
2. Combination of spherical harmonic transform to obtain rotation invariant feature vector with reduced dimension of the characteristics of ray-casting based on the implementation of feature extraction methods, the evaluation by searching the parameters of the experiment to determine the best value.
3. Analysis of the basic ray casting method and the ray casting method to improve the shortcomings, a wavelet transform based on the three-dimensional characterization of the Ways. Ray-casting algorithm for the expansion of the sampling points Chebyshev sequences discrete wavelet transform, then the use of spherical harmonic transform to obtain rotation invariant feature vector.
4. Wavelet tr
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Size: 2632704 |
Author: 周光有 |
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Description: 研究了三角形表面模型的布尔运算。传统的CSG 算法是基于基本实体的布尔运算进行的，对于由三角形或多边形描述的表面模
型的复杂模型运算则十分困难。通过构建模型的BSP 树，利用BSP 树的空间分割能力，把参与运算的模型分割成两部分，然后，根据交、并、差
各种布尔运算，组合分割后的结果，实现了不规则三维模型的布尔运算-Researched on Boolean Operation of triangle facial model. Traditional CSG algorithm based on the Boolean Operation of primitive
solid model, which hard to deal with the complex model defined by triangles or polygons. Construct the BSP Trees of 3D models, using the ability of
space partioning to divide up the model into two partions，and then，you will get the Boolean Operation results such as intersection, union, difference
by combine different partions. Implemented the Boolean Operation of unregulated 3D model.
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Size: 175104 |
Author: browser_movie |
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Description: 设定相关参数如表面材质、光源、光照和着色参数等 完成绘制(Set the parameters such as surface, material, light, illumination and shading parameters to complete the drawing)
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Size: 7168 |
Author: hhaijoy
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