Illumination invariant change detection
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United States of America Patent
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Mar 3, 2009
Grant Date -
Sep 8, 2005
app pub date -
Feb 25, 2005
filing date -
Mar 2, 2004
priority date (Note) -
Expired
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Abstract
A system and method for illumination invariant change detection are provided, the system including a processor, an energy ranking unit in signal communication with the processor for extracting block coefficients for the first and second images and computing an energy difference responsive to the coefficients for a frequency energy between the first and second images, and a change detection unit in signal communication with the processor for analyzing the energy difference and detecting a scene change if the energy difference is indicative of change; and the method including receiving first and second images, extracting block coefficients corresponding to frequency energies for the first and second images, computing an energy difference for at least one of the frequency energies between the first and second images, analyzing the at least one energy difference, and detecting a scene change if the energy difference is indicative of change.
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