Obstacle detection using stereo vision
First Claim
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1. A method for detecting an obstacle, the method comprising:
- identifying an object in a field by analyzing one or more stereo images in color space;
determining a vegetation height of a cultivated vegetation canopy at corresponding coordinates within the field;
detecting an object height of the object to identify a screened object having an object height exceeding a vegetation height of the cultivated vegetation canopy;
estimating a range associated with the screened object with respect to a vehicle;
estimating dimensions associated with the screened object; and
establishing an obstacle avoidance zone for the vehicle based on the estimated range and dimensions.
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Abstract
A system and method for detecting an obstacle comprises determining a vegetation height of a vegetation canopy at corresponding coordinates within a field. An object height is detected, where the object height of an object exceeds the vegetation height. A range of the object is estimated. The range of the object may be references to a vehicle location, a reference location, or absolute coordinates. Dimensions associated with the object are estimated. An obstacle avoidance zone is established for the vehicle based on the estimated range and dimensions.
120 Citations
28 Claims
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1. A method for detecting an obstacle, the method comprising:
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identifying an object in a field by analyzing one or more stereo images in color space; determining a vegetation height of a cultivated vegetation canopy at corresponding coordinates within the field; detecting an object height of the object to identify a screened object having an object height exceeding a vegetation height of the cultivated vegetation canopy; estimating a range associated with the screened object with respect to a vehicle; estimating dimensions associated with the screened object; and establishing an obstacle avoidance zone for the vehicle based on the estimated range and dimensions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for detecting an obstacle, the system comprising:
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a row detection module for determining a vegetation height of a cultivated vegetation canopy at corresponding coordinates within a field; an obstacle detection module for detecting a screened object with an object height that exceeds the vegetation height of the cultivated vegetation canopy; an object estimator for estimating a range associated with the screened object with respect to a vehicle and estimating dimensions associated with the object via one or more stereo images; and a vehicular guidance system for establishing an obstacle avoidance zone for the vehicle based on the estimated range and dimensions. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification