Dynamic Lane Partition Line Recognition During Vehicle Maneuvers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lane recognition systems for vehicles face instability during lane changes, leading to misrecognition of lane partition lines, as the vehicle moves away from one line and approaches another, resulting in varying curvature recognition and uncomfortable steering control.
Innovation Solution
An apparatus that includes a lane change determiner and a processing area changer, which adjusts the image processing area to accommodate lane changes by enlarging it in the direction of the lane change and opposite direction, ensuring both lane partition lines before and after the change are detected, and a relaxer that relaxes detection conditions to facilitate recognition near image edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the processing area is limited to a predefined area to reduce processing load, then processing efficiency is improved, but lane partition lines may be missed during lane changes resulting in recognition instability
Solution Approach 1:
The processing area is made dynamic by adjusting its range based on vehicle state. When lane change is detected, the processing area is expanded to include areas where lane partition lines may appear during the lane change maneuver. This resolves the contradiction by allowing the system to maintain high processing efficiency during normal driving while ensuring reliable detection during lane changes through selective expansion of the processing area.
Solution Approach 2:
The system changes the parameter of processing area range based on detected lane change state. By switching between a limited predefined area during normal operation and an expanded area during lane changes, the system achieves both high processing efficiency and reliable recognition stability when needed.
2Reliability
If the processing area is expanded to accommodate lane changes, then lane partition line detection reliability is improved, but processing load increases
Solution Approach 1:
Rather than permanently expanding the processing area, the system dynamically adjusts the processing area range only when lane change is detected. This allows the system to maintain high processing efficiency during normal driving while ensuring reliable detection during lane changes, resolving the contradiction between reliability and processing efficiency.
Solution Approach 2:
The system performs preliminary detection of lane change state and proactively adjusts the processing area before lane partition lines move out of the original predefined area. This preliminary action ensures that the expanded processing area is ready in time to capture the moving lane partition lines, maintaining both reliability and efficiency.
3Measurement precision
If strict detection conditions are applied to ensure accuracy, then measurement precision is improved, but lane partition lines near image edges are missed during lane changes
Solution Approach 1:
The system applies different detection condition strictness to different regions of the image. In the central region, strict detection conditions maintain high accuracy. In peripheral regions where lane partition lines may appear during lane changes, the system relaxes detection conditions to ensure these lines are not missed, thus resolving the contradiction between precision and coverage through spatially varying detection criteria.
Data Source
AI summary
An apparatus for recognizing lane partition lines on opposite sides of a traveling lane in a processing area of a forward image captured by a camera mounted in a vehicle. In the apparatus, a lane change determiner is configured to determine whether or not there is a lane change made by the vehicle. A processing area changer is configured to, while it is determined by the lane change determiner that there is a lane change, change the processing area from a predefined processing area to a processing area that can accommodate the lane change.