Crosswalk Recognition for Vehicle Navigation Accuracy
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Solution Overview
Problem
Current vehicle navigation systems face challenges in providing accurate guidance during driving, particularly in recognizing crosswalks, pedestrians, and traffic signals, which can lead to safety issues and navigation errors due to limitations in image recognition and map matching accuracy.
Innovation Solution
A computer-based method and apparatus that utilizes camera images to recognize crosswalks, pedestrians, and traffic signals, and provides guidance information by comparing these recognition results with GPS and map data, allowing for real-time adjustments to the vehicle's map matching position and alerting drivers through audio and visual outputs to ensure safe driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS-based navigation is used for vehicle guidance, then the system provides basic location information, but the navigation accuracy deteriorates due to map matching errors and signal reception issues
Solution Approach 1:
The patent introduces crosswalk recognition as an intermediary element to bridge GPS coordinates and actual vehicle position. By detecting crosswalks in camera images and matching them with map data, the system creates a reliable reference point that mediates between imprecise GPS signals and the need for accurate navigation, thereby improving both measurement precision and reliability
Solution Approach 2:
The system implements feedback by continuously comparing recognized crosswalk positions with map data and using this information to correct map matching errors. The recognized crosswalk serves as feedback evidence that validates or corrects the vehicle's estimated position, creating a closed-loop system that improves navigation accuracy over time
2Loss of information
If image recognition algorithms are used to detect crosswalks and road features, then the system provides visual guidance information, but the recognition accuracy deteriorates due to varying road conditions and environmental factors
Solution Approach 1:
The patent merges multiple information sources including camera images, GPS data, and map data to improve crosswalk recognition accuracy. By combining these diverse data sources, the system compensates for the limitations of individual sensors and algorithms, achieving more reliable and complete guidance information despite varying environmental conditions
3Reliability
If multiple sensors and recognition systems are integrated to improve safety, then the system provides comprehensive guidance information, but the device complexity increases due to multiple processing requirements
Solution Approach 1:
The patent makes the navigation system multi-functional by enabling it to perform both traditional GPS navigation and crosswalk-based position correction using the same hardware components. The camera and processor serve multiple purposes: capturing images for crosswalk recognition, displaying guidance information, and providing visual feedback to drivers, thereby improving safety without proportionally increasing device complexity
Data Source
AI summary
An apparatus of providing guidance information provides guidance information about the result of recognizing a crosswalk around a vehicle as information for inducing safe driving. The guidance information about a crosswalk is differently provided in accordance with a surrounding situation concerned with forward traveling of the vehicle.