Peer Vehicle Occlusion Sharing for Hidden Road Hazard Detection
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Solution Overview
Problem
Existing vehicle warning systems struggle to provide warnings for potentially dangerous situations that are not visible to the vehicle's sensors, such as occluded areas.
Innovation Solution
A method for prioritizing occlusion information, which involves determining if a sensor's view of a spatial area is occluded, observing the area, determining a level of risk, and prioritizing the transmission of occlusion information based on this risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vehicle warning systems rely only on visible sensor data, then system complexity is reduced, but the ability to detect dangerous situations in occluded areas is lost
Solution Approach 1:
The patent uses peer vehicles as intermediaries to detect and communicate occluded hazards. Instead of equipping each vehicle with complex sensors to detect all hazards independently, the system leverages other vehicles' sensor data and peer-to-peer communication to share information about dangerous situations in occluded areas, thereby improving detection capability without significantly increasing individual vehicle system complexity
Solution Approach 2:
The system performs preliminary detection and communication of hazard information before the occluded area becomes visible to the ego vehicle's sensors. By sharing occlusion information in advance through peer-to-peer communication, the system enables the ego vehicle to take defensive measures before the hazard enters its sensor field of view, improving reliability without requiring the ego vehicle to have direct visibility of all potential hazards
2Loss of information
If all occlusion information is transmitted continuously, then information completeness is improved, but communication bandwidth is wasted
Solution Approach 1:
The patent applies local quality by prioritizing transmission of occlusion information based on the specific risk level of each occluded area. Instead of uniformly transmitting all occlusion data, the system evaluates the importance of each occluded region and selectively transmits information about high-risk areas, ensuring critical information is communicated while minimizing unnecessary bandwidth consumption
Solution Approach 2:
The system changes the transmission parameter from continuous to event-driven based on risk assessment. Occlusion information is transmitted only when the determined risk level exceeds a threshold, transforming the transmission behavior from a constant state to a conditional state that adapts to the actual hazard level, thereby reducing unnecessary communication while maintaining information completeness for dangerous situations
Data Source
AI summary
A method for indicating occlusion information at an ego agent includes observing a spatial area from a first viewpoint of one or more first sensors associated with the ego agent. The method also includes identifying the spatial area as an occluded area in accordance with observing the spatial area from a second viewpoint of the one or more first sensors after observing the spatial area from the first viewpoint. The method further includes receiving, from a target agent, a message indicating the spatial area is occluded from one or more second sensors associated with the target agent. The method still further includes transmitting, to the target agent in accordance with receiving the message, the occlusion information indicating information associated the spatial area based on identifying the spatial area as the occluded area.