Visual enhancement of interval changes using temporal subtraction, convolving, and non-rigid transformation field mapping
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United States of America Patent
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Jul 24, 2012
Grant Date -
Aug 14, 2008
app pub date -
Feb 8, 2008
filing date -
Feb 9, 2007
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Abstract
Method to bring out a temporal difference between corresponding structures in a reference image R and a floating image F by convolving the reference image R and the floating image F with a window function Hw to generate Rw and Fw, applying a non-rigid transformation resulting in a transformation field g(rR) mapping every location rR to a corresponding location rF in the floating image F and generating a subtraction image by performing subtraction Rw(r)−Fw(g(r)) wherein r represents a voxel (x, y, z) in reference image R.
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