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Validation of a radiometric normalization procedure for satellite-derived imagery within a change detection framework.

机译:在变化检测框架内验证卫星衍生图像的辐射归一化程序。

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摘要

Detecting changes in land cover through time using remotely sensed imagery is a powerful application that has seen increased use. Before a time series of remotely sensed imagery can be used for change detection, images must first be standardized for effects outside of real surface change. This thesis established a validation protocol to evaluate the effectiveness of an automated technique for normalizing temporally separate but spatially coincident imagery. Using the concept of pseudo-invariant features between master-slave image pairs, spatially coincident points are identified from images and a regression equation is calculated to normalize slave images to a master.; Image subtraction showed decreases in master-slave differences as a result of the standardization process, and the process behaved appropriately when there should be no difference between master and slave images. I also found that comparable bands between MSS and TM sensors are similar enough that linear regression may not significantly reduce between-sensor differences.
机译:使用遥感图像检测土地覆盖物随时间的变化是一项功能强大的应用程序,并且已得到越来越多的使用。在将遥感影像的时间序列用于变化检测之前,必须首先对图像进行标准化以实现实际表面变化以外的影响。本文建立了一个验证协议,以评估自动化技术的有效性,以对时间上分离但空间上重合的图像进行标准化。使用主从图像对之间的伪不变特征的概念,从图像中识别空间上的重合点,并计算回归方程以将从图像标准化为主图像。通过标准化过程,图像减法显示出主从差异的减少,并且当主图像和从图像之间应该没有差异时,该过程的行为适当。我还发现,MSS和TM传感器之间的可比频带足够相似,以至于线性回归可能不会显着减小传感器之间的差异。

著录项

  • 作者

    Callahan, Karin E.;

  • 作者单位

    Utah State University.;

  • 授予单位 Utah State University.;
  • 学科 Physical Geography.; Remote Sensing.
  • 学位 M.S.
  • 年度 2003
  • 页码 p.900
  • 总页数 91
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然地理学;
  • 关键词

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