Lane-Line Recognition Using Edge Point Filtering
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Solution Overview
Problem
Existing lane-line recognition systems face challenges in accurately recognizing broken lines due to the presence of edge points facing missing sections, which can interfere with the recognition of the lane line.
Innovation Solution
A lane-line recognition apparatus that includes an image capture unit, an edge-point extractor, a first-edge-point detector to identify edge points facing missing sections, and a lane-line recognizer that uses edge points other than those detected at missing sections to accurately recognize lane lines, employing interpolation to connect missing sections with virtual edge points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If all extracted edge points are used for lane line recognition, then more edge points are available for recognition, but recognition accuracy deteriorates due to interference from edge points facing missing sections
Solution Approach 1:
The patent extracts and removes harmful edge points (first edge points) that face missing sections of broken lines from the set of all edge points. The lane line recognizer then uses only the remaining edge points (second edge points) that are not affected by missing sections, thereby eliminating the interference while preserving the quantity of usable edge points for accurate recognition.
2Measurement precision
If edge points facing missing sections are excluded from recognition, then recognition accuracy improves, but the number of available edge points decreases
Solution Approach 1:
The patent identifies edge points facing missing sections as harmful factors that interfere with recognition. By detecting and excluding these specific first edge points, the system converts the harmful presence of missing sections into a beneficial filtering process, where the remaining second edge points provide clean, reliable data for accurate lane line recognition without the interference of false edge points.
Data Source
AI summary
An apparatus for recognizing lane lines including a broken line. An image capture unit is configured to acquire an image of the surroundings including a roadway ahead of a subject vehicle. An edge-point extractor is configured to extract edge points in the image. An first-edge-point detector is configured to detect first edge points facing at least one missing section of a broken line in the edge points extracted by the edge-point extractor. A lane-line recognizes is configured to recognize a lane line using the edge points extracted by the edge-point extractor other than all or some of the first edge points.