Dynamic Lane Mark Detection Range for Vehicle Deviation Prediction
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Solution Overview
Problem
Existing lane deviation prevention systems face inaccuracies in deviation prediction judgments due to a fixed lane mark detection distance range, leading to delayed and unreliable prevention outputs, increased computational load, and erroneous lane mark recognition, especially when vehicle speed changes.
Innovation Solution
A lane deviation prevention apparatus that dynamically adjusts the lane mark detection distance range based on vehicle speed and deviation prediction time, ensuring accurate judgment and timely output by maintaining the detection range within the lane mark detection distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the lane mark detection distance range is enlarged to ensure deviation prediction judgment is made within the detection range, then the accuracy of deviation prediction judgment is improved, but the amount of calculation of image processing increases and the time required for image processing becomes long
Solution Approach 1:
The patent applies dynamics by making the lane mark detection distance range adjustable rather than fixed. The control unit dynamically adjusts the detection distance range based on vehicle speed, extending the range at higher speeds and reducing it at lower speeds. This dynamic adjustment ensures accurate deviation prediction judgment while optimizing image processing time and computational load according to actual driving conditions.
2Measurement precision
If the lane mark detection distance range is enlarged to ensure deviation prediction judgment is made within the detection range, then the accuracy of deviation prediction judgment is improved, but cases where an image other than the lane mark is erroneously recognized as the lane mark are increased
Solution Approach 1:
The patent applies local quality by adjusting the detection distance range according to specific driving conditions (vehicle speed). Instead of uniformly enlarging the detection range in all situations, the system locally adapts the range to match the current operational context, thereby maintaining recognition accuracy while reducing erroneous detections of non-lane-mark images.
3Productivity
If the lane mark detection distance range is fixed, then the amount of calculation of image processing is reduced, but the deviation prediction judgment is made in a region outside the lane mark detection distance range leading to inaccurate judgment
Solution Approach 1:
The patent applies parameter changes by modifying the detection distance range parameter based on vehicle speed. The control unit adjusts this key parameter dynamically, changing it from a fixed value to a variable that adapts to driving conditions. This resolves the contradiction by ensuring the judgment region remains within the detection range while optimizing processing efficiency.
Data Source
AI summary
There is provided a lane deviation prevention apparatus which can make a lane deviation prediction judgment more accurately. The lane deviation prevention apparatus includes driving lane shape recognition device to detect a lane mark on a road included in a front image within a lane mark detection distance range and to recognize a shape of a driving lane boundary, and a deviation prediction judgment device that judges, based on the shape of the driving lane boundary, whether the vehicle deviates from a driving lane after a previously set deviation prediction time and outputs a deviation prevention output in a case where it is judged that the vehicle deviates, and the driving lane shape recognition device that dynamically sets the position of the lane mark detection distance range in accordance with a vehicle speed of the vehicle and the deviation prediction time.