Division Line Recognition With Boundary Mapping Around Obstacles
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Solution Overview
Problem
Conventional division line recognition systems for vehicles may erroneously recognize white lines as cut off due to obstacles, leading to inaccurate driving control, as they rely solely on edge points in camera images without considering obstruction by external objects.
Innovation Solution
A division line recognition apparatus that includes a detection system to identify external situations, a microprocessor-based electronic control unit to generate maps with division line information, and additional boundary information when the line's end is near an obstacle or detection limit, preventing false recognition by adding obstacle or boundary information to the map.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If white lines are recognized simply based on edge points in camera images, then the recognition process is simple and fast, but the accuracy deteriorates when lines are cut off by obstacles
Solution Approach 1:
The system performs preliminary detection of obstacles and boundary conditions before finalizing division line recognition. By detecting obstacles that may cut off division lines and adding boundary information in advance, the system prevents erroneous recognition while maintaining efficient processing through structured multi-stage analysis.
Solution Approach 2:
The patent introduces boundary information as an intermediary element between edge point detection and final division line recognition. This boundary information acts as a mediator that provides contextual context about obstacles and detection limits, enabling more accurate recognition without requiring complex reprocessing of edge points.
2Area of stationary object
If the detection area is expanded to cover more external space, then the coverage area increases, but the complexity of determining detection boundaries and handling edge cases increases
Solution Approach 1:
The detection space is segmented into distinct regions with defined boundaries. By dividing the external space into detectable areas with clear boundary conditions, the system manages complexity through structured spatial organization while maintaining comprehensive coverage. Each segment can be independently analyzed with appropriate boundary handling.
Solution Approach 2:
The patent adds a boundary information dimension to the division line data structure. Instead of only storing geometric line information, the system incorporates boundary attributes that indicate whether line ends are actual terminations or occlusions. This dimensional enhancement enables more sophisticated boundary handling without increasing spatial complexity.
Data Source
AI summary
A division line recognition apparatus including a detection part configured to detect an external situation around a subject vehicle, and an electronic control unit including a microprocessor and a memory connected to the microprocessor. The microprocessor is configured to perform generating a map including a division line information on a division line on a road based on the external situation detected by the detection part, setting an area of an external space detectable by the detection part, determining whether an end of the division line on the map is located at a boundary of the area of the external space, and adding a boundary information to the division line information when it is determined that the end of the division line is located at the boundary.