Article

Applied Intelligence

, Volume 18, Issue 2, pp 215-234

First online:

Change Detection in Overhead Imagery Using Neural Networks

  • Chris CliftonAffiliated withDepartment of Computer Sciences, Purdue University

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Abstract

Identifying interesting changes from a sequence of overhead imagery—as opposed to clutter, lighting/seasonal changes, etc.—has been a problem for some time. Recent advances in data mining have greatly increased the size of datasets that can be attacked with pattern discovery methods. This paper presents a technique for using predictive modeling to identify unusual changes in images. Neural networks are trained to predict “before” and “after” pixel values for a sequence of images. These networks are then used to predict expected values for the same images used in training. Substantial differences between the expected and actual values represent an unusual change. Results are presented on both multispectral and panchromatic imagery.

change detection overhead imagery neural networks