AVM Parking Guide Line Detection via Multi-Camera Fusion
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Solution Overview
Problem
Ultrasonic sensor-based parking assist systems are limited in recognizing parking sections when obstacles or other vehicles are not within a predetermined region, leading to difficulties in accurately guiding drivers to park within the intended space.
Innovation Solution
An around view monitoring (AVM) system combines images from multiple cameras to generate a combined image signal, allowing a controller to detect parking guide lines, calculate distances, and provide control information for guiding the driver through visual, auditory, and haptic feedback, ensuring accurate recognition of parking sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an ultrasonic sensor-based parking assist system is used, then the system cost is reduced and driver burden is decreased, but the system cannot recognize parking sections when obstacles or other vehicles are not within a predetermined region
Solution Approach 1:
The patent combines ultrasonic sensors and cameras into a hybrid parking assist system. The ultrasonic sensors provide proximity detection while cameras provide visual recognition of parking sections, creating a complementary multi-sensor system that overcomes the limitations of either sensor type alone.
Solution Approach 2:
The system performs multiple functions using different sensors: ultrasonic sensors detect obstacles and measure distances, while cameras identify parking section boundaries and guide lines. This multi-functional approach allows reliable parking section recognition regardless of obstacle presence.
2Ease of operation
If a driver directly operates the steering wheel to move the vehicle during parking section recognition, then the driver maintains control, but the distance between the vehicle and parking line becomes larger than the effective detection range
Solution Approach 1:
The system provides real-time feedback to the driver through display screens showing the detected parking section and vehicle position. This visual feedback guides the driver to adjust the vehicle position appropriately, ensuring the parking section remains within the effective detection range of sensors.
Solution Approach 2:
The patent introduces an intermediary control system that processes sensor data and provides guidance information to the driver. This intermediary layer translates complex sensor measurements into intuitive visual cues, helping the driver maintain optimal positioning without direct manual steering adjustments.
3Ease of operation
If the distance between the vehicle and parking line exceeds the effective detection range, then the driver has more maneuvering space, but the ultrasonic sensor or camera cannot accurately detect the parking section
Solution Approach 1:
The system dynamically adjusts detection parameters and sensor activation based on vehicle position and distance to the parking section. When the vehicle is farther away, the system activates long-range detection modes and adjusts sensor sensitivity to maintain accurate detection across varying distances.
Solution Approach 2:
The patent uses multiple cameras positioned at different locations and angles to detect the parking section from various dimensions. This multi-perspective approach ensures that at least one camera maintains accurate detection even when the vehicle distance varies, providing robust parking section recognition.
Data Source
AI summary
Disclosed are an apparatus and a method of assisting parking, and the apparatus for assisting parking includes: an around view monitoring (AVM) system including a plurality of cameras mounted in a vehicle, and configured to combine images photographed by the respective cameras, and output a combined image signal in a form of an around view; a controller configured to analyze the combined image signal and detect a parking guide line, calculate a distance between the detected parking guide line and the vehicle, and generate control information corresponding to the calculated distance; and a guide unit configured to output control information.