De-aliasing depth images
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United States of America Patent
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Aug 20, 2013
Grant Date -
Sep 29, 2011
app pub date -
Mar 26, 2010
filing date -
Mar 26, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
Techniques are provided for de-aliasing depth images. The depth image may have been generated based on phase differences between a transmitted and received modulated light beam. A method may include accessing a depth image that has a depth value for a plurality of locations in the depth image. Each location has one or more neighbor locations. Potential depth values are determined for each of the plurality of locations based on the depth value in the depth image for the location and potential aliasing in the depth image. A cost function is determined based on differences between the potential depth values of each location and its neighboring locations. Determining the cost function includes assigning a higher cost for greater differences in potential depth values between neighboring locations. The cost function is substantially minimized to select one of the potential depth values for each of the locations.
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