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  image matching
Texture is an important attribute for medical image matching and retrieval.
      
The SCSF is effective and efficient for image matching because it is independent of image distortion such as rotation and flip as well as it increases the matching accuracy.
      
Our experiments show that the image matching is quickly and efficiently with the use of SCSF.
      
Then image matching, based on the maximum correlation coefficient, is performed between registered images after the low contrast areas have been removed.
      
In this paper, an automatic approach with multi-step image matching algorithm is presented.
      
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影像匹配在多级分辨率构成的金字塔影像系统上进行由粗到精的匹配,一个GIS需要能处理多比例尺的要求,一个影像分析系统要能有效地进行多尺度的影像信息的分析。因此人们必然需要研究多分辨率信号处理的理论,其中小波理论就是最近发展的并且是目前公认为有前途的一种理论。本文介绍了小波理论的基本概念和性质,阐述了利用高斯和三次样条作为尺度函数生成小波的方法,并运用它们来检测影像的边缘。通过与Sobel和零交叉提取边缘方法实验结果的比较,说明了该方法的优越性。这一理论对模式识别,计算机视觉,影像分析,偏微分方程的求解和分形分析是有意义的。

Synthetic aperture radar is widely used in geosciences, marine geodesy, resource exploiting, calamity monitoring and etc. for its all-time and all weather capability and high spatial resolution. But, there are still some theoretical or technological problems not well solved which prevented the technique from large-scale application. On the basis of brief explanation about the height-detecting theory of INSAR, the paper investigated the key data processings of the technique, especially detailed in some main steps,...

Synthetic aperture radar is widely used in geosciences, marine geodesy, resource exploiting, calamity monitoring and etc. for its all-time and all weather capability and high spatial resolution. But, there are still some theoretical or technological problems not well solved which prevented the technique from large-scale application. On the basis of brief explanation about the height-detecting theory of INSAR, the paper investigated the key data processings of the technique, especially detailed in some main steps, such as : image matching, calculating the elliptical earth phase, interferogram fringe filtering and phase unwrapping. Some processing samples are provided too.

合成孔径雷达干涉测量 (INSAR)因具有全天时、全天候和高精度的特点而被广泛应用于地学、海洋、资源探测以及灾害监测等众多领域 ,但仍有若干理论和技术问题还没有得到彻底解决而限制了该项技术的大规模实际应用。本文在简要介绍INSAR原理的基础上 ,重点讨论数据处理中的关键技术 ,特别着重分析了影响INSAR测量精度的主要环节 ,包括当前影像匹配、去平地效应、干涉条纹图滤波以及相位解缠中所存在的问题 ,并给出部分处理实例供学者讨论

It is two major committed steps of interfering measurement that Interferometric SAR image registration and removal of the phase of the flat earth.Some methods about data preprocessing, control points determining, complex image registration and removal of the phase of the flat earth are introduced.In the meantime,interfering the basic principle that the effect got rid of level land of picture in introduction, a kind of method to obtain the high accuracy the same name control point fast have being put forward....

It is two major committed steps of interfering measurement that Interferometric SAR image registration and removal of the phase of the flat earth.Some methods about data preprocessing, control points determining, complex image registration and removal of the phase of the flat earth are introduced.In the meantime,interfering the basic principle that the effect got rid of level land of picture in introduction, a kind of method to obtain the high accuracy the same name control point fast have being put forward. In this research, ERS 1, ERS 2 complex data in the area of Zhangbei is used.

星载干涉雷达影像匹配以及干涉图平地效应去除是干涉测量的两大关键步骤。在介绍复影像匹配前的预处理、控制点的选取、复影像匹配、干涉图平地效应去除的基本原理的同时,提出了一种快速获取高精度同名控制点的方法。还给出了我国张北地区ERS 1,ERS 2复影像数据生成干涉图的结果。

 
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