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Spatial alignment of image data from a multichannel detector using a reference image

  • US 8,817,115 B1
  • Filed: 05/05/2011
  • Issued: 08/26/2014
  • Est. Priority Date: 05/05/2010
  • Status: Active Grant
First Claim
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1. A method for correcting spatial alignment errors in an imaging system that acquires images of an object from at least two spatially distinct imaging regions at different times, while there is relative motion between the object and each imaging region, comprising the steps of:

  • (a) acquiring at least one image of the object from a first imaging region at a first point in time;

    (b) acquiring at least one image of the object from a second imaging region at a second point in time, the first imaging region and the second imaging region being spatially separated, the first point in time and the second point in time being temporally separated, where acquisition of each image of the object from the second imaging region is based on an estimated speed of the relative motion between the object and each imaging region;

    (c) determining a cross region spatial misalignment between image data acquired from the first imaging region and image data acquired from the second imaging region by analyzing image data acquired from the first and second imaging regions, where the cross region spatial misalignment is proportional to an error in the estimated speed; and

    (d) correcting the cross region spatial misalignment to align the image data acquired from the first region with the image data acquired from the second region.

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