Pedestrian Crossing Intention Discrimination via Projection Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems for assisting pedestrians or bicycles in crossing roads, such as those described in PTL 1, face issues with erroneous intention determination and inability to adapt to changes in pedestrian crossing intentions, particularly with the rise of self-driving vehicles, which can lead to safety concerns.
Innovation Solution
An information processing apparatus and method that includes a controller and an intention discriminator to determine the intention of a pedestrian or bicycle to cross, controlling notifications to stop or continue crosswalk pattern projections based on the discriminator's findings, ensuring accurate intention assessment and safe crossing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the system unilaterally determines pedestrian crossing intention based on behavior detection before projection, then the system complexity is reduced, but the reliability of intention determination deteriorates leading to erroneous decisions
Solution Approach 1:
The patent implements a feedback mechanism where the projection apparatus projects a crosswalk pattern first, then observes the pedestrian's actual response and behavior change after projection. The intention discriminator determines crossing intention based on this feedback information (whether the pedestrian starts crossing, changes direction, or continues waiting), rather than relying solely on pre-projection behavior detection. This feedback loop significantly improves the reliability of intention determination.
Solution Approach 2:
The system performs a preliminary action by projecting the crosswalk pattern before making a final determination of crossing intention. This preliminary projection serves as a test to elicit the pedestrian's true intention, allowing the system to observe actual behavior rather than relying on predictive algorithms alone. The projection is temporarily displayed to provoke a response that reveals the pedestrian's genuine crossing intent.
2Speed
If the system uses simple behavior detection algorithms, then the processing speed is improved, but the ability to detect and adapt to changes in pedestrian intention deteriorates
Solution Approach 1:
The system continuously monitors the pedestrian's behavior after projection and adapts its determination based on observed changes. The intention discriminator updates its assessment in real-time by detecting whether the pedestrian begins to cross, stops, or changes direction in response to the projection, enabling the system to adapt to dynamic changes in pedestrian intention rather than relying on fixed algorithms.
Solution Approach 2:
The system transitions from a static, pre-determined intention assessment to a dynamic, observation-based determination. By projecting the crosswalk pattern and then observing the pedestrian's actual response in real-time, the system creates a dynamic assessment process that adapts to the pedestrian's true intentions as they unfold, rather than relying on predetermined behavioral thresholds.
3Productivity
If the notification is continuously projected without verification, then the productivity of crossing assistance is improved, but the harmful factors increase due to erroneous notifications causing safety issues
Solution Approach 1:
The system uses feedback from the pedestrian's actual response to the projection to verify whether the notification was appropriate. By observing whether the pedestrian begins to cross after the projection, the system can confirm that the notification was successful and continue the assistance, or determine that the projection was premature or erroneous and stop to avoid safety issues.
Solution Approach 2:
The system performs a partial action by temporarily projecting the crosswalk pattern for a limited duration to test pedestrian response, rather than continuously projecting without verification. This temporary, controlled projection allows the system to gather information about true crossing intention before committing to sustained assistance, reducing the risk of harmful erroneous notifications while maintaining the ability to provide productive crossing assistance when appropriate.
Data Source
AI summary
Provided are an information processing apparatus, an information processing method, and a recording medium that allow a pedestrian or a bicycle to cross a crosswalk pattern projected by a vehicle more safely. The information processing apparatus includes: a controller that controls a notification to be made by a notification apparatus that prompts a notification target person to cross; and an intention discriminator that discriminates an intention of crossing of the notification target person with respect to the notification. The controller controls the notification apparatus to stop the notification in a case where the intention discriminator discriminates that the notification target person has no intention of crossing.