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Methods and systems for image enhancement and estimation of compression noise

  • US 8,538,193 B2
  • Filed: 03/29/2012
  • Issued: 09/17/2013
  • Est. Priority Date: 09/28/2010
  • Status: Expired due to Fees
First Claim
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1. A method for estimating compression noise in an image, said method comprising:

  • receiving an image in a noise-estimation system;

    determining a first compression-noise estimate, wherein said first compression-noise estimate is associated with no scaling of said image;

    determining if said image has been scaled;

    when said image has been scaled, estimating a second compression-noise estimate, for said image, based on said first compression-noise estimate and a third compression-noise estimate, wherein said third compression-noise estimate is associated with a scaling of said image at a first scaling factor; and

    when said image has not been scaled, estimating said second compression-noise estimate, for said image, based on said first compression-noise estimate.

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