Road monitoring method for a vehicle and a system thereof
First Claim
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1. A road monitoring method for a vehicle using a camera, comprising:
- receiving a picture signal from said camera;
detecting a target from said picture signal;
calculating a horizontally estimated distance from said vehicle to said target;
calculating variables including a vertical angle of said target on a circumference and a curvature radius of said circumference; and
calculating an actual distance from said vehicle to said target based on said vertical angle and said curvature radius.
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Abstract
In order to measure an actual distance from a vehicle to a target, the target is detected from a picture signal generated by a camera mounted on a vehicle, a horizontally estimated distance of the target is calculated, variables including a vertical angle of the target on a circumference and a curvature radius of the circumference are calculated, and then the actual distance is calculated based on the vertical angle and the curvature radius.
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Citations
15 Claims
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1. A road monitoring method for a vehicle using a camera, comprising:
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receiving a picture signal from said camera;
detecting a target from said picture signal;
calculating a horizontally estimated distance from said vehicle to said target;
calculating variables including a vertical angle of said target on a circumference and a curvature radius of said circumference; and
calculating an actual distance from said vehicle to said target based on said vertical angle and said curvature radius. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A road monitoring system for a vehicle comprising a camera for generating a picture signal and an electronic control unit for receiving said picture signal and monitoring a road based on said received picture signal, wherein said electronic control unit performs:
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detecting a target from said picture signal;
calculating a horizontally estimated distance from said vehicle to said target;
calculating variables including a vertical angle of said target on a circumference and a curvature radius of said circumference; and
calculating an actual distance from said vehicle to said target based on said vertical angle and said curvature radius. - View Dependent Claims (13, 14, 15)
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Specification