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Learning Geospatial Analysis with Python - Third Edition
book

Learning Geospatial Analysis with Python - Third Edition

by Joel Lawhead
September 2019
Beginner content levelBeginner
456 pages
10h 53m
English
Packt Publishing
Content preview from Learning Geospatial Analysis with Python - Third Edition

Understanding change detection

Change detection is the process of taking two geo-registered images of the exact same area from two different dates and automatically identifying differences. It is really just another form of image classification. Just like our previous classification examples, it can range from trivial techniques like those used here, to highly-sophisticated algorithms that provide amazingly precise and accurate results.

For this example, we'll use two images from a coastal area. These images show a populated area before and after a major hurricane, so there are significant differences, many of which are easy to visually spot, making these samples good for learning change detection. Our technique is to simply subtract the ...

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Publisher Resources

ISBN: 9781789959277Supplemental Content