Vehicle Marker Layout for Orientation and Size Detection
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Solution Overview
Problem
Conventional object identification systems for autonomous driving struggle to accurately detect the orientation, relative distance, and body size of vehicles, which are crucial for predicting vehicle actions due to limitations in processing capacity.
Innovation Solution
The implementation of a conveyance marker system with multiple marker groups on different faces of a vehicle, each featuring distinct shapes, spatial patterns, temporal patterns, colors, reflection ratios, luminance, and layouts to provide information to sensing systems on other vehicles, enabling them to determine the traveling direction and body size, and potentially estimate distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional object identification systems use simple image processing and machine learning, then the system can be implemented in a relatively simple manner, but it cannot accurately detect the orientation, relative distance, and body size of vehicles
Solution Approach 1:
The patent introduces markers as intermediary objects attached to vehicles. These markers serve as mediators between the vehicle and the sensing system, encoding orientation, distance, and body size information in their patterns. The sensing system detects these marker patterns to accurately determine vehicle parameters without requiring complex processing of the entire vehicle image.
Solution Approach 2:
The patent uses variations in marker patterns, colors, and luminance to encode different vehicle information. By changing the visual characteristics of the markers (spatial patterns, temporal patterns, colors, reflection ratios), the system can convey multiple pieces of information about the vehicle's state and parameters through simple visual cues that are easy to detect.
2Adaptability or versatility
If the conveyance has a front-rear symmetrical body capable of traveling in both directions, then the design is more versatile, but it becomes difficult for other vehicles to determine the traveling direction
Solution Approach 1:
The patent applies asymmetry to the marker patterns rather than the vehicle body. While the vehicle body remains symmetrical for bidirectional travel, the markers attached to different faces have asymmetric patterns that encode direction information. For example, markers on the front face have different patterns than markers on the rear face, allowing the sensing system to determine which end is forward based on the detected marker patterns.
Solution Approach 2:
The markers are pre-configured with specific patterns on different faces of the vehicle before travel. This preliminary arrangement of asymmetric patterns on various faces allows the sensing system to determine traveling direction without requiring the vehicle to have an asymmetric body design.
Data Source
AI summary
A first marker group is mounted on a front face of a vehicle. A second marker group MG2 is mounted on a rear face of the vehicle. A third marker group is mounted on a left-side face of the vehicle. A fourth marker group is mounted on a right-side face of the vehicle. Each marker group includes at least one marker. Each marker is designed to have at least one from among the shape, spatial pattern, temporal pattern, color, reflection ratio, luminance, and layout defined so as to allow a sensing system mounted on another vehicle to acquire information with respect to the vehicle in the sensing operation thereof.