Lane Recognition Around Movable Center Lines
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Solution Overview
Problem
Existing lane recognition systems fail to accurately estimate the vehicle's traveling position when the road's center line changes in the width direction, leading to potential erroneous recognition.
Innovation Solution
A lane recognition method and device that utilize a combination of imaging and ranging devices to detect road boundaries, integrate this information with map data, and employ a control unit to autonomously adjust vehicle positioning to account for movable center lines, ensuring accurate lane recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system uses map information and image data to recognize lane boundaries, then lane recognition accuracy is improved, but when the center line position changes, erroneous recognition occurs because the system cannot adapt to movable center lines
Solution Approach 1:
The system dynamically adjusts the cross-check process based on the detection of movable center lines. When a movable center line is detected, the system selectively suspends cross-checking on the side where the center line is located, allowing the system to adapt to changing center line positions while maintaining accurate lane recognition on stable sides.
Solution Approach 2:
The system changes the operational parameters of lane recognition by detecting the position and movability of center lines. Based on this detection, the system modifies the cross-check behavior - suspending it on the side with movable center lines and maintaining it on the opposite side, thereby adapting to different road conditions.
2Reliability
If the system performs cross-check between map information and image data on both sides of the vehicle, then lane recognition reliability is improved, but when a movable center line is present, this causes erroneous recognition and reduces reliability
Solution Approach 1:
The system extracts and identifies the movable center line as a special element that causes recognition errors. By detecting the presence and position of movable center lines, the system selectively removes or suspends the cross-check operation on the affected side, preventing erroneous recognition while maintaining reliable lane recognition on unaffected sides.
Solution Approach 2:
The system dynamically adjusts the cross-check operation based on real-time detection of movable center lines. The cross-check is suspended on the side where movable center lines are detected and maintained on the opposite side, allowing the system to maintain high reliability under varying road conditions.
3Device complexity
If the system uses fixed center line positions from map data, then processing simplicity is maintained, but the system cannot accommodate movable center lines, leading to recognition errors
Solution Approach 1:
The system performs preliminary detection of movable center lines before conducting lane boundary cross-checking. By identifying the presence and position of movable center lines in advance, the system can selectively adjust the cross-check process, maintaining simplicity where applicable while adapting to movable center lines where needed.
Solution Approach 2:
The system changes the operational parameters of the cross-check process based on the detection of movable center lines. When movable center lines are detected, the system modifies the cross-check behavior by suspending it on the affected side, thereby accommodating movable center lines without significantly increasing overall system complexity.
Data Source
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AI summary
The present invention provides a lane recognition method and a lane recognition device. When a travel lane of a vehicle (V) is recognized by performing cross-check between first boundary information about a boundary dividing lanes acquired from map information (14) and second boundary information about the boundary dividing the lanes acquired from a detection device of the vehicle (V), a movable center line is detected from at least one of the first boundary information and the second boundary information. The movable center line is a center line (C) that can move in a width direction of a road on which the vehicle (V) travels. When the movable center line is detected, the cross-check between the first boundary information and the second boundary information is not performed on one of a right side and a left side of the vehicle (V) on which the movable center line is detected.