Method and apparatus for generating consistent image registration
AssigneeUniversity of Iowa Research Foundation
InventorGary E. Christensen
Life of this patent
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Abstract
The present invention provides a method and apparatus for generating inversely related forward and reverse image transformations in any image registration technique with ambiguous correspondence based upon the joint estimation of the transformation. Accordingly, two image data sets are received, a source and a target. Current sets of forward and reverse displacement fields are initialized. From the current set of forward and reverse displacement fields, the consistent forward transformation and the consistent reverse transformation are jointly estimated. These transformations are outputted.
Claims56
A method for generating consistent image registration between a first image and a second image, comprising the steps of:
- (a) receiving a first image data set and a second image data set;
- (b) initializing a current forward transformation and a current reverse transformation;
- (c) computing an inverse of the current forward transformation and an inverse of the current reverse transformation;
- (d) jointly estimating a consistent forward and a consistent reverse transformation between the first image data set and the second image data set by minimizing a difference between the current forward transformation and the inverse of the current reverse transformation and minimizing a difference between the current reverse transformation and the inverse of the current forward transformation;
- and
- (e) outputting the jointly estimated forward and the reverse transformations.
A system for generating consistent image registration between a first image data set and a second image data set comprising:
- (a) a data storage system that stores one or more image data sets;
- (b) one or more processor in communication with the data storage system for performing the steps comprising:
- (i) receiving a first image data set and a second image data set;
- (ii) initializing a current forward transformation and a current reverse transformation;
- (iii) computing an inverse of the current forward transformation and an inverse of the current reverse transformation:
- (iv) jointly estimating a consistent forward and a consistent reverse transformation between the first image data set and the second image data set by minimizing a difference between the current forward transformation and the inverse of the current reverse transformation and minimizing a difference between the current reverse transformation and the inverse of the current forward transformation;
- and
- (v) outputting the jointly estimated forward and the reverse transformations.
A computer-readable, digital storage device storing executable instructions which cause a processor to generate a consistent image registration between a first image data set and a second image data set by performing steps comprising:
- (a) receiving a first image data set and a second image data set;
- (b) initializing a current forward transformation and a current reverse transformation;
- (c) computing an inverse of the current forward transformation and an inverse of the current reverse transformation:
- (d) jointly estimating a consistent forward and a consistent reverse transformation between the first image data set and the second image data set by minimizing a difference between the current forward transformation and the inverse of the current reverse transformation and minimizing a difference between the current reverse transformation and the inverse of the current forward transformation;
- and
- (e) outputting the jointly estimated forward and the reverse transformations.
Dependencies are inferred from the claim text.