首页> 外文学位 >Wavelet-based multiresolution method for surface reconstruction.
【24h】

Wavelet-based multiresolution method for surface reconstruction.

机译:基于小波的多分辨率曲面重构方法。

获取原文
获取原文并翻译 | 示例

摘要

One of the areas of research that has achieved tremendous importance over the recent past is the problem of reconstructing a surface of a solid polyhedral object. This problem has found vast applications in human anatomy, automobile design, medical imaging and therapy, etc.; One of the foremost techniques used to solve this problem included constructing the solid from a series of slices parallel to each other. This slice data was obtained by taking horizontal cross-sections passing through the interior of the solid like slicing an apple through a number of thin horizontal planes.; The piecewise linear interpolation technique was one of the traditional algorithms based on the above slicing technique. One of the problems with this algorithm was that the running time of the algorithm was large and it required fine-tuning of certain external parameters.; In the 1980s, multiresolution methods using wavelets emerged as an alternative to solve problems then solved by the windowed Fourier transforms. Wavelets were basically useful for sparse representations of various functions.; Our thesis aims at implementing the multiresolution tiling algorithm using wavelets for the purpose of surface reconstruction. This technique also uses data from slices taken through the surface being reconstructed. In this thesis, we have discussed the pros and cons of using either algorithm and our implementation provides a stable workbench for surface reconstruction using wavelets to enable further research. Experiments show that the running time of the multiresolution tiling algorithm is much lesser than that of the piecewise linear technique. Experiments also show that both algorithms show good resemblances with that of the original.
机译:在最近的过去中已获得极大重要性的研究领域之一是重建固体多面体物体的表面的问题。这个问题已经在人体解剖学,汽车设计,医学成像和治疗等领域得到了广泛的应用。用于解决此问题的最重要的技术之一包括根据一系列彼此平行的切片构造实体。该切片数据是通过截取穿过实体内部的水平横截面获得的,就像将苹果切成许多薄的水平平面一样。分段线性插值技术是基于上述切片技术的传统算法之一。该算法的问题之一是该算法的运行时间长并且需要对某些外部参数进行微调。在1980年代,出现了使用小波的多分辨率方法作为解决问题的替代方法,然后通过开窗傅立叶变换解决了问题。小波基本上对于稀疏表示各种功能很有用。我们的论文旨在使用小波实现多分辨率平铺算法,以进行表面重建。该技术还使用通过重建曲面获取的切片中的数据。在本文中,我们讨论了使用这两种算法的优缺点,我们的实现为使用小波进行曲面重建提供了一个稳定的工作台,以进行进一步的研究。实验表明,多分辨率平铺算法的运行时间比分段线性算法的运行时间短得多。实验还表明,这两种算法都与原始算法非常相似。

著录项

  • 作者

    Iyer, Shobha.;

  • 作者单位

    University of Windsor (Canada).;

  • 授予单位 University of Windsor (Canada).;
  • 学科 Computer Science.
  • 学位 M.Sc.
  • 年度 2003
  • 页码 91 p.
  • 总页数 91
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自动化技术、计算机技术;
  • 关键词

  • 入库时间 2022-08-17 11:44:44

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号