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IMAGE BLENDING USING MULTI-SPLINES

  • US 20090263045A1
  • Filed: 04/17/2008
  • Published: 10/22/2009
  • Est. Priority Date: 04/17/2008
  • Status: Active Grant
First Claim
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1. A computer-implemented process for blending image regions, comprising using a computer to perform the following process actions:

  • associating a separate offset map with each image region being blended;

    representing each offset map using a separate low-dimensional spline;

    establishing an energy function comprising the summation of a set of terms comprising a separate term defining the difference in blended values of spline control points for each seam pixel and a separate term for each image region defining the blended values of the control points for each region, wherein a seam pixel is a pixel whose location corresponds to the boundary between two adjacent image regions;

    solving the system of equation for the spline control point values that minimize the sum of all the terms;

    computing a correction term for each pixel in each image region based on the spline control point values exhibited at spline control points and a prescribed 2D tensor product spline basis; and

    applying the correction term associated with each pixel to that pixel to produce a blended image from the image regions.

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