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Superresolution enhancment of peripheral regions in nonlinear lens geometries

  • US 8,896,703 B2
  • Filed: 04/11/2011
  • Issued: 11/25/2014
  • Est. Priority Date: 03/31/2011
  • Status: Active Grant
First Claim
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1. Within an image acquisition system comprising a non-linear, wide-angled lens and an imaging sensor, a method of enhancing a scene containing one or more off-center peripheral regions, the method comprising:

  • acquiring an initial distorted image with a large field of view, including using a non-linear, wide-angled lens and an imaging sensor;

    determining and extracting an off-center region of interest (ROI) within said initial distorted image;

    applying a geometric correction to reconstruct the off-center ROI into an approximately rectangular frame of reference as a first reconstructed ROI;

    determining, on a pixel-by-pixel basis, a quality of reconstructed pixels within said first reconstructed ROI;

    wherein, within the first reconstructed ROI, a first plurality of pixels have quality measures above a threshold, and a second plurality of pixels have quality measures below the threshold; and

    acquiring one or more additional initially distorted images, and extracting and reconstructing matching additional ROIs to combine with the second plurality of pixels of said first reconstructed ROI using a super-resolution technique to provide one or more enhanced ROIs;

    wherein the method is performed using one or more computing devices.

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