Method and apparatus for the detection of visibility impairment of a pane
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Abstract
A method for determining a structural image of a pane, the structural image being suitable for the detection of a visibility impairment of the pane, especially raindrops. The method includes a step of removing a background brightness from an image of the pane, on which image a surface of the pane is shown in focus and a background of the pane is shown out of focus, in order to determine a structural image of the pane. In a further step, accentuation of image structures present in the structural image is carried out in order to determine an enhanced structural image of the pane.
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Citations
30 Claims
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1-15. -15. (canceled)
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16. A method for determining a structural image of a pane, the structural image being suitable for the detection of a visibility impairment of the pane, especially raindrops, the method comprising:
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removing a background brightness from an image of the pane, on which image a surface of the pane is shown in focus and a background of the pane is shown out of focus, in order to determine a structural image of the pane; and accentuating image structures present in the structural image in order to determine an enhanced structural image of the pane. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method for detecting a visibility impairment of a pane, caused especially by raindrops, the method comprising:
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evaluating structures of a structural image of the pane; wherein on the structural image a surface of the pane is shown in focus and a background of the pane is shown out of focus, in order to detect the visibility impairment of the pane. - View Dependent Claims (23, 24, 25, 26)
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27. A method for detecting a contamination of a pane, caused especially by raindrops, the method comprising:
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evaluating a first image of the pane, which is based on a reflection of a first optical radiation, and a second image of the pane, which is based on a reflection of a second optical radiation, in order to detect the contamination; configuring the first optical radiation to be reflected at a contaminated region of the pane; and configuring the second optical radiation to be reflected at a contamination-free region of the pane. - View Dependent Claims (28)
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29. An apparatus for determining a structural image of a pane, the structural image being suitable for the detection of a visibility impairment of the pane, especially raindrops, comprising:
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a removing arrangement to remove a background brightness from an image of the pane, on which image a surface of the pane is shown in focus and a background of the pane is shown out of focus, in order to determine a structural image of the pane; and an accentuating arrangement to accentuate image structures present in the structural image in order to determine an enhanced structural image of the pane.
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30. A computer readable medium having a computer program, which is executable by a processor, comprising:
a program code arrangement having program code for determining a structural image of a pane, the structural image being suitable for the detection of a visibility impairment of the pane, especially raindrops, by performing the following; a removing arrangement to remove a background brightness from an image of the pane, on which image a surface of the pane is shown in focus and a background of the pane is shown out of focus, in order to determine a structural image of the pane; and an accentuating arrangement to accentuate image structures present in the structural image in order to determine an enhanced structural image of the pane.
Specification