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Metric and self-calibration for an automatic, surveillance-based change detection system operating on noisy imagery

Patent image
ARL

Self-calibrating an automatic, surveillance-based change detection system operating on noisy imagery comprises detecting a first image co-registered with a second image, wherein the first image and the second image each comprise pixels of a noisy image of a scene; detecting the second image co-registered with the first image, wherein co-registration of the first image with the second image comprises pixels from different images corresponding to a same location within the scene; producing a calibration factor based on the co-registered images; producing a modified ratio of pixel values corresponding to the first image and the second image from the same location within the scene; and comparing the modified ratio to a pre-determined threshold ratio value.

Inventors: 
Ranney, Kenneth I.; Sichina, Jeffrey
Patent Number: 
Technical domain: 
IT and Software
FIle Date: 
2009-09-21
Grant Date: 
2011-06-14
Grant time: 
631 days
Grant time percentile rank: 
11
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY