Apparatus and method of tracking an image-feature using a block matching algorithm
Patent 5946041 Issued on August 31, 1999. Estimated Expiration Date: 
July 24, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 24, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMotion vector detection system of a moving object on a screen Motion dependent video signal processing Image fluctuation detection apparatus Method and apparatus for estimating motion vector fields by rejecting local outliers Video camera with image shift correction Patent #: 5585843 InventorApplicationNo. 685494 filed on 07/24/1996US Classes:348/416.1, Including motion vector348/420.1, Involving block coding348/699Motion vector generationExaminersPrimary: Lee, RichardAttorney, Agent or FirmInternational ClassH04N 007/32Foreign Application Priority Data1996-01-31 JPAbstractAn image-feature tracking apparatus for tracking an object includes a feature deriving part for deriving at least one feature in an image of the object, and a matching operation part for matching two frames of the image defined at different times in the image of the object and producing an approximate motion vector of the feature. The apparatus further includes a motion-vector correcting part for correcting the approximate motion vector provided in the matching operation part based on a position of the feature derived in the feature deriving part. In the image-feature tracking apparatus, from a corrected motion vector provided in the motion-vector correcting part, a position of the object is detected. | |
