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Image-based metrology for nanoscale lamellar structures.

机译:基于图像的纳米级片状结构的计量学。

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摘要

Nanoscale lamellar structures are ridge like structures that have shown great promise for device oriented applications. In order to study multiple device oriented structures simultaneously, fingerprint-like lamellar structures are produced. The device oriented structural features that we are interested in are subsets of the fingerprint patterns. Manual detection and evaluation of critical device oriented structural features in the fingerprint pattern is impractical and hence we need automated image analysis techniques. In this thesis we develop automated image analysis techniques for the quantitative study of these lamellar structures. The contributions of this thesis are: an accurate propose-and-verify methodology for the extraction of lamellar structural features; a point-set registration technique that finds the (partial) overlap between two related lamellar patterns; and, the development of quantitative analysis and visualization tools for the lamellar structures. The structural features are accurately extracted using a combination of Gabor (proposal) and wedge (verification) filters. The registration is achieved by using a speeded-up, distance map based iterative closest point technique with uniform parameter space binning. Two application case studies, spatial variation of structural similarity and defect density estimation, are presented.
机译:纳米级片状结构是类似脊的结构,已显示出对面向设备的应用的巨大希望。为了同时研究多个面向设备的结构,产生了类似指纹的层状结构。我们感兴趣的面向设备的结构特征是指纹模式的子集。手动检测和评估指纹图案中面向关键设备的结构特征是不切实际的,因此我们需要自动图像分析技术。在本文中,我们开发了用于这些层状结构定量研究的自动图像分析技术。本论文的贡献是:一种准确的提出并验证层状结构特征的提取方法;一种点集配准技术,用于发现两个相关层状图案之间的(部分)重叠;以及开发用于层状结构的定量分析和可视化工具。使用Gabor(建议)滤镜和楔形(验证)滤镜的组合可以准确地提取结构特征。通过使用具有均匀参数空间合并的基于加速距离映射的迭代最近点技术来实现配准。提出了两个应用案例研究,结构相似性的空间变化和缺陷密度估计。

著录项

  • 作者

    Ravindran, Prabu.;

  • 作者单位

    The University of Wisconsin - Madison.;

  • 授予单位 The University of Wisconsin - Madison.;
  • 学科 Engineering Mechanical.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 99 p.
  • 总页数 99
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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