Determining A Geometric Parameter from a Single Image
First Claim
1. A method of determining a geometric parameter of a region from an image, wherein the image is collected to develop a navigation database, the method comprising:
- determining calibration values corresponding to a camera mounted on a vehicle;
capturing a plurality of images of geographic features, the plurality of images captured by the camera mounted on the vehicle;
identifying a single image from the plurality of images; and
determining a geometric parameter of a region in the single image based on the determined calibration values and no images other than the single image, the geometric parameter being a real-world distance.
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Accused Products
Abstract
Systems, devices, features, and methods for determining a geometric parameter from an image are disclosed. For example, one method for determining the geometric parameter is used to develop a navigation database. The method comprises determining calibration values corresponding to a camera mounted on a vehicle or a pedestrian. A plurality of images of geographic features are captured by the camera. A single image from the plurality of images is identified or selected. A geometric parameter of a region in the single image is determined based on the determined calibration values. For example, the geometric parameter is a real-world distance, such as a real-world length or width.
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Citations
20 Claims
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1. A method of determining a geometric parameter of a region from an image, wherein the image is collected to develop a navigation database, the method comprising:
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determining calibration values corresponding to a camera mounted on a vehicle; capturing a plurality of images of geographic features, the plurality of images captured by the camera mounted on the vehicle; identifying a single image from the plurality of images; and determining a geometric parameter of a region in the single image based on the determined calibration values and no images other than the single image, the geometric parameter being a real-world distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of determining a real-world parameter of an object in an image, the method comprising:
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determining calibration values relating to a camera, wherein the camera captures an image at the determined calibration values; identifying a first point in the image; identifying a second point in the image, wherein the first point and the second point correspond to endpoints of an object in the image; determining a distance between the first point and the second point in the image based on the determined calibration values, the distance corresponding to a real-world length or a real-world width of the object in the image. - View Dependent Claims (13, 14, 15, 16)
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17. A computer-readable medium configured to store a computer program that performs a method of determining a real-world ground parameter from a single image, the method comprising:
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identifying an image captured by a camera; identifying calibration values associated with the camera, the identified calibration values including a determined extrinsic value and a determined intrinsic value of the camera at the time the image was captured; and determining a real-world ground parameter of a region in the image based on the identified calibration values, the real-world ground parameter including a ground distance value. - View Dependent Claims (18, 19)
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20. A device for determining a real-world geometric parameter from an image, the device comprising:
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a user interface configured to display images captured by a camera; a processor in communication with the user interface; a memory in communication with the processor, the memory configured to store data of the images and data of a determined calibration value of the camera, wherein an image is displayed on the user interface, and wherein the processor is configured to determine a geometric parameter of a region represented in the displayed image based on the determined calibration value, the geometric parameter being a value representing a real-world distance between selected points in the displayed image.
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Specification