Image Algebra change detection

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{{Content Tree|HEADER=QGIS Tutorial|NAME=QGIS tutorial}}
 
  
A simple way to identify changes between two images which are correctly georeferenced and calibrated is computing a pixel-to-pixel difference or ratio.
 
 
{{exercise|message=Exercise 54|text=}}
 
==Related articles==
 
* [[Multitemporal color composites]]
 
* [[Principal components]]
 
 
 
[[category: Change detection]]
 

Latest revision as of 10:46, 17 September 2014

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