System and method for automatic stereo measurement of a point of interest in a scene
First Claim
1. A system for performing three dimensional, stereo measurement, the system comprising:
- a sensor for obtaining a sensor image of a scene;
a database for providing first and second reference images of the scene that are a stereo pair of images;
at least one processing system responsive to an output of the sensor and in communication with the database, and operable to;
register the sensor image with the first reference image;
select a point of interest from the sensor image;
derive a point of interest in the first reference image from the selected point of interest in the sensor image and obtain a registration between the sensor image and the first reference image;
perform a stereo point measurement of the selected point of interest in the first reference image to determine a point in the second reference image that represents a stereo mate of the selected point of interest in the first reference image; and
further analyze the selected point of interest and the point in the second reference image to select an adjacent three dimensional scene coordinate which more accurately corresponds with the selected point of interest in the sensor image;
wherein said adjacent three dimensional stereo measurement of the selected point of interest in the sensor image is in the three dimensional scene coordinate.
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Abstract
A system for performing a three dimensional stereo measurement that uses a sensor for obtaining a sensor image of a scene, and a database for providing first and second reference images of the scene that are a stereo pair of images. At least one processing system is responsive to an output of the sensor and in communication with the database. The processing system registers the sensor image with the first reference image, and also selects a point of interest from one of the sensor image and the first reference image. The processing system performs a stereo point measurement from the selected point of interest and the first reference image to determine a point in the second reference image that represents a stereo mate of the selected point in the first reference image.
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Citations
20 Claims
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1. A system for performing three dimensional, stereo measurement, the system comprising:
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a sensor for obtaining a sensor image of a scene; a database for providing first and second reference images of the scene that are a stereo pair of images; at least one processing system responsive to an output of the sensor and in communication with the database, and operable to; register the sensor image with the first reference image; select a point of interest from the sensor image; derive a point of interest in the first reference image from the selected point of interest in the sensor image and obtain a registration between the sensor image and the first reference image; perform a stereo point measurement of the selected point of interest in the first reference image to determine a point in the second reference image that represents a stereo mate of the selected point of interest in the first reference image; and further analyze the selected point of interest and the point in the second reference image to select an adjacent three dimensional scene coordinate which more accurately corresponds with the selected point of interest in the sensor image; wherein said adjacent three dimensional stereo measurement of the selected point of interest in the sensor image is in the three dimensional scene coordinate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for performing three dimensional, stereo measurement, the system comprising:
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a sensor for obtaining a sensor image of a scene; a database for providing first and second reference images of the scene that are a stereo pair of images; at least one processing system responsive to an output of the sensor and in communication with the database, and operable to; register the sensor image with the first reference image; select a point of interest in the sensor image; derive a point of interest in the first reference image from the selected point of interest in the sensor image and a registration between the sensor image and the first reference image; perform a stereo point measurement from the selected point of interest in the first reference image to determine a point in the second reference image that represents a stereo mate of the selected point of interest in the first reference image; using the stereo point measurement to select a three dimensional scene coordinate which more accurately corresponds with the selected point of interest in the sensor image; and a display for displaying both of said first and second reference images with said points displayed on each of said reference images to enable an individual to visually confirm an accuracy of said stereo point measurement operation. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A system for performing three dimensional, stereo measurement, the system comprising:
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a sensor for obtaining a sensor image of a scene; a database for providing first and second reference images of the scene that are a stereo pair of images, the first and second reference images each being comprised of a plurality of pixels, and the first reference image further being provided with a corresponding elevation model, and wherein coordinates are associated with each said pixel in the first reference image; at least one processing system responsive to an output of the sensor and in communication with the database, and operable to; register the sensor image with the first reference image; select a point of interest from the sensor image; derive a point of interest in the first reference image from a selected point of interest in the sensor image and a registration between the sensor image and the first reference image, wherein the selected point of interest in the first reference image is defined by a first pixel; perform a stereo point measurement from the selected point of interest in the first reference image to determine a point in the second reference image that defines a pixel that represents a stereo mate of the selected point of interest in the first reference image; using the stereo point measurement to select a three dimensional scene coordinate which more accurately corresponds with the selected point of interest in the sensor image; and a display for displaying both of said first and second reference images with said points displayed on each of said reference images to enable an individual to visually confirm an accuracy of said stereo point measurement. - View Dependent Claims (18, 19, 20)
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Specification