METHOD FOR PREDICTING LANE LINE AND LANE DEPARTURE WARNING SYSTEM USING THE SAME
First Claim
1. A method for predicting lane line, comprising the steps of:
- providing two lane predicting relationship curves;
imaging lane lines of a lane and measuring a characteristic value of an identifiable lane line of the lane lines when there is only one lane line of the imaged lane lines that is identifiable; and
reconstructing an unidentifiable lane line to complete the lane image by applying the measured characteristic value into the two lane predicting relationship curves.
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Abstract
A method for predicting lane line is provided in the present invention, in which the method is capable of predicting and reconstructing the unidentified lane line according to a predetermined geometry relationship based on the recognized lane line data previously while one side of lane line is unable to be identified. In one embodiment, a lane predicting relationship formula is formed by describing the geometry relationship between the two identified lines defined the lane. When the one side of line of the lane is unable to be identified, a new predicted line can be reconstructed for representing the unidentified line of lane according to the lane predicting relationship curve. In another embodiment, a lane departure warning system utilizing the foregoing method is provided for monitoring vehicle moving status and alerting the driver so as to enhance the vehicle safety.
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Citations
20 Claims
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1. A method for predicting lane line, comprising the steps of:
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providing two lane predicting relationship curves; imaging lane lines of a lane and measuring a characteristic value of an identifiable lane line of the lane lines when there is only one lane line of the imaged lane lines that is identifiable; and reconstructing an unidentifiable lane line to complete the lane image by applying the measured characteristic value into the two lane predicting relationship curves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A lane departure warning system, comprising:
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at least a front imaging unit, for imaging an image of lane lines of a lane on which a vehicle travels; a vehicle status detecting unit, for detecting a status of the vehicle and thus generating a detection signal; an image processing/controlling module, capable of performing an operation based upon the image of lane line and the detection signal so as to generate an alarm signal; a displaying unit, coupled to the image processing/controlling module for receiving signals from the image processing/controlling module and thus displaying an image of lane line according; and an alerting unit, coupled to the image processing/controlling module for receiving the alarm signal and thus generating an alarm; wherein the image processing/controlling module is configured to reconstruct an unidentifiable lane line to complete the lane image according to a lane predicting relationship curve when there is only one lane line of the lane line image that is identifiable. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification