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US 12,315,177 B2Granted
Systems and methods for optical image geometric modeling
AssigneeCalifornia Institute of Technology
InventorsSaif Aati, Jean-Philippe Avouac
Life of this patent
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Abstract
Refining a rational functional model (RFM) by subdividing the multiple images into multiple groups of sub-images according to the imaging sensor, then performing the RFM refinement for each group separately and estimating a 3D transformation using the sub-images from the central sensor as a reference.
Claims18
A method for refining a rational function model for optical imaging, the method comprising:
- obtaining data from a plurality of detector arrays of a sensor;
- subdividing the data into a plurality of images corresponding to each detector array of the plurality of detector arrays, each detector array corresponding to a different track of images;
- performing rational function model refinement on each of the plurality of images separately for each of the plurality of images;
- and
- performing a three-dimensional transformation of the plurality of images after refinement using reference images from a reference array from the plurality of detector arrays and tie points matched to ground control points that are constrained by a reference digital elevation model.
2 more elements
A method for refining a rational function model for optical imaging, the method comprising:
- obtaining a first plurality of images from a first sensor comprising a first detector array and a second plurality of images from a second sensor comprising a second detector array, each detector array corresponding to a different track of images;
- determining paired images from the first plurality of images with images from the second plurality of images, wherein the determining comprises comparing a base-to-height ratio to a B/H threshold value;
- subdividing the first and second plurality of images into a plurality of groups corresponding to the paired images;
- performing rational function model refinement on each of the plurality of groups separately for each of the plurality of groups;
- and
- performing a three-dimensional transformation of the plurality of groups after refinement using a reference image from the first or second plurality of images and tie points matched to ground control points that are constrained by a reference digital elevation model.
3 more elements
A method for refining a rational function model for optical imaging, the method comprising:
- obtaining a first plurality of images from a sensor at a first time and a second plurality of images from the sensor at a second time, each plurality of images corresponding to a different track of images;
- determining paired images from the first plurality of images with images from the second plurality of images, wherein the determining comprises comparing cross-track overlap between images to a cross-track threshold value and comparing a base-to-height ratio to a B/H threshold value;
- subdividing the first and second plurality of images into a plurality of groups corresponding to the paired images;
- performing rational function model refinement on each of the plurality of groups separately for each of the plurality of groups;
- and
- performing a three-dimensional transformation of the plurality of groups after refinement using a reference image from the first or second plurality of images and tie points matched to ground control points that are constrained by a reference digital elevation model.
3 more elements
Dependencies are inferred from the claim text.