Map Information Correction Using Feature Point Priority

The patent segments the map correction process by dividing feature points into multiple priority levels (first priority, second priority, third priority). This segmentation allows the system to process only the most critical feature points first, significantly reducing the time required for essential corrections while maintaining accuracy for less critical features in subsequent processing stages.

The patent implements preliminary action by pre-calculating and storing priority levels for different feature points before the actual correction process. This pre-established priority structure enables the system to immediately begin correcting high-priority features without delay, achieving real-time performance requirements for automatic driving applications.

The patent applies local quality by assigning different priority levels to different feature points based on their specific characteristics and importance. High-priority feature points (such as those critical for navigation safety) receive immediate correction with highest accuracy, while lower-priority points are processed subsequently. This differential approach maintains necessary accuracy for critical features while significantly improving overall correction efficiency.

The patent implements partial action by correcting only the most essential feature points (first priority) within the real-time constraint, accepting that less critical features (third priority and below) will be corrected in subsequent cycles. This partial correction approach ensures the minimum necessary accuracy for safe automatic driving operation while meeting strict time requirements.