Vision system for vehicle
First Claim
1. A vision system for a vehicle, said vision system comprising:
- an image sensor disposed at a subject vehicle and having an exterior field of view exterior of the subject vehicle;
a control, wherein said control comprises a processor that processes image data captured by said image sensor to detect objects present exterior of the subject vehicle and in the field of view of said image sensor;
wherein said control processes captured image data to detect points of interest of an object present in the field of view of said image sensor, and wherein detected points of interest of the detected object comprise detected corner features of the detected object that is present in the field of view of said image sensor, and wherein the detected object has a height above ground, and wherein the detected corner features of the detected object are disposed at respective heights of the detected object above ground;
wherein said control processes captured image data to determine movement vectors of the detected points of interest of the detected object, and wherein, responsive to said processing of captured image data, said control determines whether determined movement vectors of detected points of interest of the detected object present in the field of view of said image sensor are indicative of an object of interest present in the field of view of said image sensor;
wherein a parabolic region of interest in which objects exterior of the subject vehicle are likely objects of interest is defined by a parabolic boundary having an apex located centrally within the field of view of said image sensor and above a middle region of the field of view of said image sensor; and
wherein determined movement vectors that are less than a threshold pixel length are not considered indicative of an object of interest, and wherein the detected object is not considered an object of interest when the detected corner features of the detected object are above and outside the parabolic boundary of the parabolic region of interest.
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Accused Products
Abstract
A vision system for a vehicle includes an image sensor disposed at a subject vehicle and having a field of view exterior of the subject vehicle. A control is operable to process image data captured by the image sensor to detect an object exterior of the subject vehicle. The control is operable to process captured image data to detect points of interest present in the field of view of the image sensor and, responsive to processing of captured image data, the control is operable to determine movement of the detected points of interest. The control is operable to process captured image data to determine movement vectors and, responsive to processing of captured image data, the control is operable to determine an object of interest in the field of view of the image sensor and exterior of the subject vehicle.
296 Citations
20 Claims
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1. A vision system for a vehicle, said vision system comprising:
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an image sensor disposed at a subject vehicle and having an exterior field of view exterior of the subject vehicle; a control, wherein said control comprises a processor that processes image data captured by said image sensor to detect objects present exterior of the subject vehicle and in the field of view of said image sensor; wherein said control processes captured image data to detect points of interest of an object present in the field of view of said image sensor, and wherein detected points of interest of the detected object comprise detected corner features of the detected object that is present in the field of view of said image sensor, and wherein the detected object has a height above ground, and wherein the detected corner features of the detected object are disposed at respective heights of the detected object above ground; wherein said control processes captured image data to determine movement vectors of the detected points of interest of the detected object, and wherein, responsive to said processing of captured image data, said control determines whether determined movement vectors of detected points of interest of the detected object present in the field of view of said image sensor are indicative of an object of interest present in the field of view of said image sensor; wherein a parabolic region of interest in which objects exterior of the subject vehicle are likely objects of interest is defined by a parabolic boundary having an apex located centrally within the field of view of said image sensor and above a middle region of the field of view of said image sensor; and wherein determined movement vectors that are less than a threshold pixel length are not considered indicative of an object of interest, and wherein the detected object is not considered an object of interest when the detected corner features of the detected object are above and outside the parabolic boundary of the parabolic region of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A vision system for a vehicle, said vision system comprising:
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an image sensor disposed at a rear portion of a subject vehicle and having an exterior field of view rearward of the subject vehicle; wherein said image sensor comprises part of a camera module, and wherein said camera module is configured for use as a rear backup camera of a vehicle; a control, wherein said control comprises a processor that processes image data captured by said image sensor to detect objects present exterior of the subject vehicle and in the field of view of said image sensor; wherein said camera module includes said control; wherein said control processes captured image data to detect points of interest of an object present in the field of view of said image sensor, and wherein detected points of interest of the detected object comprise detected corner features of the detected object that is present in the field of view of said image sensor, and wherein the detected object has a height above ground, and wherein the detected corner features of the detected object are disposed at respective heights of the detected object above ground; wherein said control processes captured image data to determine movement vectors of detected points of interest of the detected object, and wherein, responsive to said processing of captured image data, said control determines whether determined movement vectors of detected points of interest of the detected object present in the field of view of said image sensor are indicative of an object of interest present in the field of view of said image sensor and rearward of the subject vehicle; wherein a parabolic region of interest in which objects exterior of the subject vehicle are likely objects of interest is defined by a parabolic boundary having an apex located centrally within the field of view of said image sensor and above a middle region of the field of view of said image sensor; and wherein determined movement vectors that are less than a threshold pixel length are not considered indicative of an object of interest, and wherein the detected object is not considered an object of interest when the detected corner features of the detected object are above and outside the parabolic boundary of the parabolic region of interest. - View Dependent Claims (16, 17, 18)
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19. A vision system for a vehicle, said vision system comprising:
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an image sensor disposed at a subject vehicle and having an exterior field of view exterior of the subject vehicle; wherein said image sensor comprises part of a camera module; a control, wherein said control comprises a processor that processes image data captured by said image sensor to detect objects present exterior of the subject vehicle and in the field of view of said image sensor; wherein said camera module includes said control; wherein said control processes captured image data to detect points of interest of an object present in the field of view of said image sensor, and wherein detected points of interest of the detected object comprise detected corner features of the detected object that is present in the field of view of said image sensor, and wherein the detected object has a height above ground, and wherein the detected corner features of the detected object are disposed at respective heights of the detected object above ground; wherein said control processes captured image data to determine movement vectors of the detected points of interest of the detected object, and wherein, responsive to said processing of captured image data, said control determines whether determined movement vectors of detected points of interest of the detected object present in the field of view of said image sensor are indicative of an object of interest present in the field of view of said image sensor; wherein a parabolic region of interest in which objects exterior of the subject vehicle are likely objects of interest is defined by a parabolic boundary having an apex located centrally within the field of view of said image sensor and above a middle region of the field of view of said image sensor; wherein said control determines that detected points of interest are part of an object of interest when at least one determined movement vector associated with a detected point of interest is greater than a threshold amount; and wherein determined movement vectors that are less than a threshold pixel length are not considered indicative of an object of interest, and wherein the detected object is not considered an object of interest when the detected corner features of the detected object are above and outside the parabolic boundary of the parabolic region of interest. - View Dependent Claims (20)
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Specification