Method for vision-aided navigation for unmanned vehicles
First Claim
Patent Images
1. A method for vision-aided navigation comprising:
- identifying fiducials that persist across multi-temporal imagery;
creating a reference imagery database based, at least partially, on the identified fiducials;
obtaining test imagery from a vehicle;
registering the test imagery against reference imagery from the reference imagery database;
obtaining a correct registration solution, whereby the correct registration solution indicates that the acquired test imagery matches the reference imagery;
determining coordinates of a location at which the test imagery was acquired;
estimating a position error of the vehicle;
wherein the estimated position error is based, at least partially, on coordinates of a location of the reference imagery;
correcting the position error of the vehicle; and
guiding the vehicle based, at least partially, on the corrected error position.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for vision-aided navigation which utilizes an image registration system to update a navigation control system. One exemplary feature of the method includes the use of Enhanced Phase Correlation techniques to create a reference imagery database and register images against the created database. The method may be operated on a non-transitory computer-readable medium storing a plurality of instructions which when executed by one or more processors causes the one or more processors to perform the method for vision-aided navigation which utilizes an image registration system to update a navigation control system.
-
Citations
20 Claims
-
1. A method for vision-aided navigation comprising:
-
identifying fiducials that persist across multi-temporal imagery; creating a reference imagery database based, at least partially, on the identified fiducials; obtaining test imagery from a vehicle; registering the test imagery against reference imagery from the reference imagery database; obtaining a correct registration solution, whereby the correct registration solution indicates that the acquired test imagery matches the reference imagery; determining coordinates of a location at which the test imagery was acquired; estimating a position error of the vehicle;
wherein the estimated position error is based, at least partially, on coordinates of a location of the reference imagery;correcting the position error of the vehicle; and guiding the vehicle based, at least partially, on the corrected error position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for vision-aided navigation comprising the steps of:
-
acquiring an image frame from a sensor on a vehicle including a guidance system; selecting an ortho-rectified reference image from a reference imagery database; ortho-rectifying the acquired image frame; geo-registering the ortho-rectified acquired image frame against the ortho-rectified reference image; obtaining a correct registration solution, whereby the correct registration solution indicates that the ortho-rectified acquired image frame matches the ortho-rectified reference image; determining coordinates of a location at which the ortho-rectified acquired image frame was acquired; determining the vehicle'"'"'s positional alignment error;
wherein the vehicle'"'"'s positional alignment error is based, at least partially, on the coordinates of a location of the ortho-rectified reference image;updating the vehicle'"'"'s guidance system; and correcting the vehicle'"'"'s motion. - View Dependent Claims (14, 15, 16)
-
-
17. A non-transitory computer-readable medium storing a plurality of instructions which when executed by one or more processors causes the one or more processors to perform a method for vision-aided navigation, the plurality of instructions for the method for vision-aided navigation comprising:
-
instructions for identifying fiducials that persist across multi-temporal imagery; instructions for creating a reference imagery database based, at least partially, on the identified fiducials; instructions for obtaining a test image from a vehicle; instructions for registering the test image against a reference image from the reference imagery database; instructions for obtaining a correct registration solution, whereby the correct registration solution indicates that the acquired test image matches the reference image; instructions for determining coordinates of a location at which the test image was acquired; instructions for estimating a position error of the vehicle;
wherein the estimated position error is based, at least partially, on coordinates of a location of the reference image;instructions for correcting the position error of the vehicle; and instructions for guiding the vehicle based, at least partially, on the corrected error position. - View Dependent Claims (18, 19, 20)
-
Specification