Motion estimation and compensation of feature-motion decorrelation
AssigneeThe Hong Kong University of Science and Technology
InventorsWeichuan Yu, Tianzhu Liang
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Abstract
The subject disclosure relates to motion estimation and compensation of feature-motion decorrelation. In an aspect, coupled filtering can be employed to solve feature-motion decorrelation problems. In further aspects, a linear convolution model can be employed to model image variation caused by motion, and an image before motion and a warped image after motion can be filtered with a pair of filters having motion parameters shared with a tissue motion model. Compensation of feature-motion decorrelation in ultrasound images demonstrates various aspects of the subject disclosure.
Claims32
A method that facilitates compensation of feature-motion decorrelation, comprising:
- performing, by a device comprising a processor, image warping on a subset of image information associated with a first image from a pair of images to generate a warped subset of the image information associated with the pair of images;
- filtering, via a first filtering process, the warped subset of the image information based at least in part on at least one initialized motion parameter to generate filtering results;
- filtering, via a second filtering process that is a modified version of the first filtering process, another subset of the image information associated with a second image from the pair of images to generate other filtering results;
- updating the at least one initialized motion parameter based in part on the filtering results to create at least one updated motion parameter associated with a difference between the pair of images;
- and
- outputting the at least one updated motion parameter in response to a determination that the at least one updated motion parameter satisfies at least one accomplishment criterion.
A coupled filtering device that facilitates compensation of feature-motion decorrelation, comprising;
- an image warping component configured to warp a first subset of input image information associated with a first image to produce a warped first subset of the input image information;
- and
- a filtering component configured to filter a second subset of the input image information associated with a second image based at least in part on at least one initialized motion parameter via a first filtering process, and configured to filter the warped first subset of the input image information associated with the first image via a second filtering process to obtain filtering results.
A device, comprising:
- a memory that stores computer-executable components;
- and
- a processor, communicatively coupled to the memory, that executes or facilitates execution of the computer-executable components, the computer-executable components including:
- a computerized component that performs a first filtering operation on first image information associated with a before-motion image based on a first filter and a set of motion parameters, and a second filtering operation on warped second image information associated with an after-motion image based on a second filter to create filtering results, wherein a warping operation that creates the warped second image information and the first filtering operation share the set of motion parameters, wherein the set of motion parameters facilitate calculation of a matching metric for the filtering results, and wherein the second filtering operation is a modified version of the first filtering operation.
Dependencies are inferred from the claim text.