Patent ID: 7961134

Claim:
A system for self-calibrating an automatic, surveillance-based change detection system operating on noisy imagery, said system comprising: a first sensor that detects a first image co-registered with a second image, wherein said first image and said second image each comprise pixels of a noisy image of a scene; a second sensor that detects said second image co-registered with said first image, wherein co-registration of said first image with said second image comprises pixels from different images corresponding to a same location within said scene; a calibration factor module that receives co-registered imagery data of said first image and said second image and produces a calibration factor based on the co-registered images; a metric calculator that directly receives said co-registered imagery data and directly receives said calibration factor and produces a modified ratio of pixel values corresponding to said first image and said second image from the same location within said scene; and a modified ratio test module that compares said modified ratio to a pre-determined threshold ratio value.