INTRINSIC FEATURE-BASED POSE MEASUREMENT FOR IMAGING MOTION COMPENSATION
First Claim
1. A method for generating pose information for motion correcting images, comprising the steps of:
- obtaining a first plurality of images of a region of interest (ROI) to be imaged, the first plurality of images associated with a first time and with different positions and orientations with respect to the ROI;
defining active regions in each of the first plurality of images, selecting intrinsic features in each of the first plurality of images based on the corresponding ones of the active regions,identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in corresponding ones of a second plurality of images of the ROI associated with a second time prior to the first time, andcomputing a relative pose for the first plurality of images based on the portion of the intrinsic features.
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Abstract
Systems and methods for generating motion corrected tomographic images are provided. A method includes obtaining first images of a region of interest (ROI) to be imaged and associated with a first time, where the first images are associated with different positions and orientations with respect to the ROI. The method also includes defining an active region in the each of the first images and selecting intrinsic features in each of the first images based on the active region. Second, identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in corresponding ones of second images of the ROI associated with a second time prior to the first time and computing three-dimensional (3D) coordinates for the portion of the intrinsic features. Finally, the method includes computing a relative pose for the first images based on the 3D coordinates.
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Citations
20 Claims
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1. A method for generating pose information for motion correcting images, comprising the steps of:
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obtaining a first plurality of images of a region of interest (ROI) to be imaged, the first plurality of images associated with a first time and with different positions and orientations with respect to the ROI; defining active regions in each of the first plurality of images, selecting intrinsic features in each of the first plurality of images based on the corresponding ones of the active regions, identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in corresponding ones of a second plurality of images of the ROI associated with a second time prior to the first time, and computing a relative pose for the first plurality of images based on the portion of the intrinsic features. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 16, 17, 18)
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8. A system for generating pose information for motion correcting images, comprising:
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a processor; a first module configured for causing the processor to obtain a first plurality of images of a region of interest (ROD to be imaged, the first plurality of images associated with a first time and with different positions and orientations with respect to the ROI; a second module configured for causing the processor to define active regions in each of the first plurality of images, a third module configured for causing the processor to select intrinsic features in each of the first plurality of images based on the corresponding ones of the active regions, a fourth module configured for causing the processor to identify a portion of the intrinsic features temporally and spatially matching intrinsic features in corresponding ones of a second plurality of images of the ROI associated with a second time prior to the first time, and a fifth module configured for causing the processor to compute a relative pose for the first plurality of images based on the portion of the intrinsic features. - View Dependent Claims (13, 14)
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15. A computer-readable medium storing a computer program having instructions for generating pose information for motion correcting images, the instructions comprising:
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obtaining a first plurality of images of a region of interest (ROI) to be tomographically imaged and associated with a first time, the first plurality of images associated with different positions and orientations with respect to the ROI; processing each one of the first plurality of images, the processing comprising defining an active region in the one of the first plurality of images, selecting intrinsic features in the one of the first plurality of images based on the active region, identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in a corresponding one of a second plurality of images of the ROI associated with a second time prior to the first time, and computing three-dimensional (3D ) coordinates for the portion of the intrinsic features; and computing a relative pose for the first plurality of images based on the 3D coordinates. - View Dependent Claims (19, 20)
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Specification