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Methods and systems for suppressing noise in images

  • US 9,635,220 B2
  • Filed: 07/16/2013
  • Issued: 04/25/2017
  • Est. Priority Date: 07/16/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a plurality of video image frames;

    constructing a plurality of spatiotemporal volumes by stacking together a plurality of image blocks extracted from same or different spatial positions on different video image frames along a trajectory of estimated motion from the video image frames;

    filtering the spatiotemporal volumes, wherein the filtering models both a random noise (RND) component and a fixed pattern noise (FPN) component in the video image frames to suppress both types of noise, and wherein the filtering is adaptively performed based at least on the estimated motion captured in each spatiotemporal volume to suppress the FPN component; and

    aggregating the image blocks from the filtered spatiotemporal volumes to generate a plurality of filtered video image frames.

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