Detection method
First Claim
1. A method for the detection of a symmetrical object of a known shape in an image of the environment in a range of view of an image taking device, comprisingtaking an image by the image taking device;
- determining at least one image region including image elements or a part thereof in the taken image or in an image generated from the taken image by image processing, said image region exceeding a preset degree of symmetry;
determining a respective relevant image portion with reference to the at least one image region or the part thereof for a subsequent shape recognition; and
analyzing the relevant image portion using shape recognition to detect a potential image of the symmetrical object.
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Accused Products
Abstract
The invention relates to a method for the detection of a symmetrical object of a known shape, in particular of a road sign, preferably associated with a road, in an image of the environment in the range of view of an image taking device in particular arranged at a motor vehicle, in which an image is taken by means of the image taking device, at least one image region including image elements, which in each case exceeds a preset degree of symmetry, or a part thereof, is determined in the taken image or in an image generated from the taken image by image processing, a respective relevant image portion is determined with reference to the at least one image region or the part thereof for a subsequent shape recognition, and the shape recognition is carried out in each case only in the at least one relevant image portion to detect a potential image of the symmetrical object.
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Citations
10 Claims
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1. A method for the detection of a symmetrical object of a known shape in an image of the environment in a range of view of an image taking device, comprising
taking an image by the image taking device; -
determining at least one image region including image elements or a part thereof in the taken image or in an image generated from the taken image by image processing, said image region exceeding a preset degree of symmetry; determining a respective relevant image portion with reference to the at least one image region or the part thereof for a subsequent shape recognition; and analyzing the relevant image portion using shape recognition to detect a potential image of the symmetrical object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. A computer program having program code means for carrying out of a method for detection of a symmetrical object of a known shape in an image of the environment in a range of view of an image taking device, comprising
taking an image by the image taking device; -
determining at least one image region including image elements or a part thereof in the taken image or in an image generated from the taken image by image processing, said image region exceeding a preset degree of symmetry; determining a respective relevant image portion with reference to the at least one image region or the part thereof for a subsequent shape recognition; and analyzing the relevant image portion using shape recognition to detect a potential image of the symmetrical object.
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10. An apparatus for the detection of a symmetrical object of a known shape comprising
a camera device for taking of an image, and a data processing device configured for analyzing the image, said analyzing including the steps of determining at least one image region including image elements or a part thereof in the taken image or in an image generated from the taken image by image processing, said image region exceeding a preset degree of symmetry; -
determining a respective relevant image portion with reference to the at least one image region or the part thereof for a subsequent shape recognition; and analyzing the relevant image portion using shape recognition to detect a potential image of the symmetrical object.
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Specification