Method and apparatus for identifying road signs
First Claim
Patent Images
1. A method of recognizing a road sign (Hz, Zz) by a camera from a traveling vehicle, comprising steps:
- acquiring at least one image of surroundings of the vehicle by the camera,determining that at least one road sign (Hz, Zz) is present in the at least one image of the surroundings of the vehicle,determining a motion blur in the at least one image in an image segment thereof in which the road sign (Hz, Zz) is situated,subtracting out at least some of the motion blur in the image segment, which results in a sharpened image segment, andrecognizing the road sign (Hz, Zz) while taking account of the sharpened image segment.
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Abstract
The invention relates to a method and a device for recognizing a road sign (Hz, Zz) by means of a camera from a traveling vehicle. The method has the following steps:
- acquiring at least one image of the surroundings of a vehicle by means of the camera,
- determining the presence of at least one road sign (Hz, Zz) in the at least one acquired image of the surroundings of the vehicle,
- determining (also estimating) motion blur in that image segment in which the present road sign (Hz, Zz) is situated,
- subtracting out motion blur in this image segment, which results in a sharpened image segment, and
- recognizing the road sign (Hz, Zz) while taking account of the sharpened image segment.
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10 Claims
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1. A method of recognizing a road sign (Hz, Zz) by a camera from a traveling vehicle, comprising steps:
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acquiring at least one image of surroundings of the vehicle by the camera, determining that at least one road sign (Hz, Zz) is present in the at least one image of the surroundings of the vehicle, determining a motion blur in the at least one image in an image segment thereof in which the road sign (Hz, Zz) is situated, subtracting out at least some of the motion blur in the image segment, which results in a sharpened image segment, and recognizing the road sign (Hz, Zz) while taking account of the sharpened image segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for road sign recognition comprising:
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a camera configured and arranged on a traveling vehicle to acquire image data including at least one image of surroundings of the traveling vehicle, and an image analysis unit configured and arranged to detect a presence of a road sign (Hz, Zz) from the image data, to determine a motion blur in an image segment in which the road sign (Hz, Zz) is situated, to subtract at least some of the motion blur out of the image segment, which results in a sharpened image segment, to recognize the road sign (Hz, Zz) while taking account of the sharpened image segment, and to generate a corresponding output signal.
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Specification