Motion detection using depth images
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United States of America Patent
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Feb 12, 2013
Grant Date -
Jul 12, 2012
app pub date -
Mar 2, 2012
filing date -
Dec 18, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A sensor system creates a sequence of depth images that are used to detect and track motion of objects within range of the sensor system. A reference image is created and updated based on a moving average (or other function) of a set of depth images. A new depth images is compared to the reference image to create a motion image, which is an image file (or other data structure) with data representing motion. The new depth image is also used to update the reference image. The data in the motion image is grouped and associated with one or more objects being tracked. The tracking of the objects is updated by the grouped data in the motion image. The new positions of the objects are used to update an application.
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