System and method for deformable object recognition
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United States of America Patent
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Sep 4, 2012
Grant Date -
Jul 23, 2009
app pub date -
May 5, 2008
filing date -
Jan 18, 2008
priority date (Note) -
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Abstract
The present invention provides a system and method for detecting deformable objects in images even in the presence of partial occlusion, clutter and nonlinear illumination changes. A holistic approach for deformable object detection is disclosed that combines the advantages of a match metric that is based on the normalized gradient direction of the model points, the decomposition of the model into parts and a search method that takes all search results for all parts at the same time into account. Despite the fact that the model is decomposed into sub-parts, the relevant size of the model that is used for the search at the highest pyramid level is not reduced. Hence, the present invention does not suffer the speed limitations of a reduced number of pyramid levels that prior art methods have.
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