Motion-blurred imaging enhancement method and system
AssigneeVarian Medical Systems, Inc.
InventorsJosh Star-Lack, Mingshan Sun
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Abstract
In accordance with at least some embodiments of the present disclosure, a process for enhancing a motion-blurred image is presented. The process may include receiving a plurality of projections, wherein the plurality of projections contain computed tomography (CT) data obtained in multiple motion phases. The process may include generating an enhanced multi-phase image by performing an enhancement operation based on the plurality of projections. The process may further include generating a plurality of phase-correlated images based on the plurality of projections and the enhanced multi-phase image.
Claims22
A method to enhance a motion-blurred image, comprising:
- receiving a plurality of projections, wherein the plurality of projections contain computed tomography (CT) data obtained in multiple motion phases;
- generating a multi-phase image based on the plurality of projections;
- generating an enhanced multi-phase image by performing a destreaking operation on the multi-phase image to reduce one or more motion-induced artifacts in the multi-phase image;
- generating a plurality of re-projections by forward-projecting the enhanced multi-phase image;
- generating a plurality of difference projections by comparing the plurality of projections and the plurality of re-projections;
- generating a plurality of phase-correlated difference images by performing a reconstruction operation based on the plurality of difference projections;
- and
- generating a plurality of phase-correlated images based on the plurality of phase-correlated difference images and the enhanced multi-phase image.
A method to enhance a motion-blurred image, comprising:
- generating a first multi-phase image based on a plurality of projections, wherein the plurality of projections contain computed tomography (CT) data obtained in multiple motion phases;
- generating an enhanced multi-phase image by reducing streaks in the first multi-phase image;
- generating a plurality of re-projections by forward-projecting the enhanced multi-phase image;
- generating a plurality of difference projections by comparing each projection selected from the plurality of projections with a corresponding re-projection selected from the plurality of re-projections;
- generating a plurality of phase-correlated difference images based on the plurality of difference projections;
- and
- generating a plurality of phase-correlated images based on the plurality of phase-correlated difference images and the enhanced multi-phase image.
A non-transitory machine-readable medium containing a set of instructions to enhance a motion-blurred image which, in response to execution by a processor, causes the processor to:
- receive a plurality of projections, wherein the plurality of projections contain computed tomography (CT) data obtained in multiple motion phases;
- generate a multi-phase image based on the plurality of projections;
- generate an enhanced multi-phase image by performing a destreaking operation on the multi-phase image to reduce one or more motion-induced artifacts in the multi-phase image;
- generate a plurality of re-projections by forward-projecting the enhanced multi-phase image;
- generate a plurality of difference projections by comparing the plurality of projections and the plurality of re-projections;
- generate a plurality of phase-correlated difference images by performing a reconstruction operation based on the plurality of difference projections;
- and
- generate a plurality of phase-correlated images based on the plurality of phase-correlated difference images and the enhanced multi-phase image.
The non-transitory machine-readable medium as recited phase image, which in response to execution by the processor, causes the processor to:
- generate a plurality of motion projections based on identifying moving pixels that contribute to the one or more motion-induced artifacts in the multi-phase image, being a first multi-phase image;
- generate a second multi-phase image based on the plurality of motion projections;
- and
- generate the enhanced multi-phase image by combining the second multi-phase image with the first multi-phase image.
A non-transitory machine-readable medium containing a set of instructions to enhance a motion-blurred image which, in response to execution by a processor, causes the processor to:
- generate a first multi-phase image based on a plurality of projections, wherein the plurality of projections contain computed tomography (CT) data obtained in multiple motion phases;
- generate an enhanced multi-phase image by reducing streaks in the first multi-phase image;
- generate a plurality of re-projections by forward-projecting the enhanced multi-phase image;
- generate a plurality of difference projections by comparing each projection selected from the plurality of projections with a corresponding re-projection selected from the plurality of re-projections;
- generate a plurality of phase-correlated difference images based on the plurality of difference projections;
- and
- generate a plurality of phase-correlated images based on the plurality of phase-correlated difference images and the enhanced multi-phase image.
Dependencies are inferred from the claim text.