Patent Document ID: 20140079280
Application ID: 13617965
Patent Status: 0

Claim One:
1. A method of automatically detecting a persistent change in a dynamically varying scene observed by a camera, said method comprising: obtaining a first set of one or more reference images of the scene; transforming the reference images into an abstract feature space; classifying pixels of the reference images in the abstract feature space into one of a plurality of classifications; generating a stable reduced-reference image based on the classifications of corresponding pixels across the reference images; obtaining a second set of one or more test images of the scene; transforming the test images into the abstract feature space; classifying pixels of the test images in the abstract feature space into one of the plurality of classifications; generating a stable test image based on the classifications of corresponding pixels across the test images; and comparing the stable reduced-reference and test images to one another to detect a difference therein, said difference corresponding to a persistent change in the dynamically varying scene occurring between when the reference images were obtained and when the test images were obtained.