Colored Tire Belt Region for Camera-Based Vehicle Recognition
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Solution Overview
Problem
Existing collision avoidance systems using cameras struggle to accurately recognize vehicles, especially when it rains, due to reduced recognition rates caused by tail lamps being projected onto wet road surfaces, leading to unreliable distance estimation between vehicles.
Innovation Solution
A pneumatic tire design featuring a colored image recognition belt region with a high recognition rate color, positioned close to the road surface, which includes a speed measurement belt region and unique information identification belt region, allowing for accurate vehicle speed estimation and tire information acquisition using a monocular camera.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a camera is used to detect vehicle distance and speed, then the system cost is reduced compared to radar or millimeter wave sensors, but the recognition rate declines significantly when it rains at night
Solution Approach 1:
The patent applies color changes by equipping the vehicle with a light-emitting device that displays different colors (white, yellow, red) based on driving state and environmental conditions. This enhances the vehicle's visibility and provides distinct feature points for camera-based recognition systems, particularly improving recognition rates during rainy nighttime conditions while maintaining low system cost
Solution Approach 2:
The patent introduces a light-emitting device as an intermediary element that mediates between the vehicle and the camera-based detection system. This device actively provides illuminated feature points (tail lamps, license plate area, bumper) that serve as reliable reference points for distance and speed estimation, bridging the gap between low-cost camera systems and reliable vehicle recognition
2Device complexity
If tail lamps are extracted as feature points for distance estimation, then the system remains simple and low-cost, but the reliability of distance estimation deteriorates when tail lamps project onto wet road surfaces
Solution Approach 1:
The patent applies preliminary action by pre-defining multiple potential feature point locations (tail lamp right, tail lamp left, license plate right, license plate left, bumper right, bumper left) and pre-establishing the relationship between these feature points and distance estimation. The system proactively selects from these predefined options based on detection conditions, preventing the problem of unreliable tail lamp projection before it affects measurement accuracy
Solution Approach 2:
The patent makes the feature point extraction system universal by enabling it to work with multiple types of vehicles and multiple feature point configurations. The system can adaptively select from six different feature point locations depending on vehicle type and detection conditions, making the simple camera-based system reliably applicable to diverse scenarios including rainy nighttime conditions
3Ease of manufacture
If a monocular camera is used for speed estimation, then the system cost is reduced, but the accuracy of speed estimation may be insufficient without additional sensors
Solution Approach 1:
The patent applies feedback by continuously monitoring the vehicle's driving state (through acceleration sensor, steering angle sensor, etc.) and using this information to control the light-emitting device and feature point selection. The system provides feedback loops where detection results inform feature point selection, and feature point selection enhances detection accuracy, enabling accurate speed estimation with a monocular camera
Solution Approach 2:
The patent replaces complex mechanical/multi-sensor systems with a camera-based optical system enhanced by light-emitting devices and image processing algorithms. Instead of using multiple physical sensors (radar, LIDAR, multiple cameras), the system substitutes these with a single camera that uses computational methods and active lighting to achieve comparable or superior measurement precision at lower cost
Data Source
AI summary
A pneumatic tire includes a surface and is rotatable about a center axis. The surface of the pneumatic tire includes a ground colored region including a surface of rubber, and an image recognition belt region including a colored region provided in a circumferential direction of the center axis.