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Image feature identification and motion compensation apparatus, systems, and methods

  • US 7,542,614 B2
  • Filed: 06/06/2007
  • Issued: 06/02/2009
  • Est. Priority Date: 03/14/2007
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a discrete cosine transform (DCT) coder to perform a DCT operation on a set of luminance values associated with a block of pixels selected from an image to obtain a DCT coefficient matrix; and

    a feature extraction module operatively coupled to the DCT coder to perform operations on a plurality of DCT coefficients selected from low-frequency bands of the DCT coefficient matrix to derive a value of an image feature strength metric associated with the block of pixels.

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