Vehicle Gesture Detection Using User Direction Filtering
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Solution Overview
Problem
Existing vehicle operation detection devices inaccurately detect user gestures due to susceptibility to irrelevant movements and lack of precision in specifying user direction.
Innovation Solution
A vehicle operation detection device comprising a direction specifying unit and a gesture detection unit, which utilize camera images to accurately identify the user's direction and detect gestures associated with that direction, preventing false positives from irrelevant movements and improving detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If gesture detection is performed based on camera images without direction specification, then the detection system is simple, but the detection accuracy deteriorates due to false positives from irrelevant movements
Solution Approach 1:
The detection system is segmented into two functional units: a direction specifying unit that determines the user's facing direction, and a gesture detection unit that detects gestures only in the specified direction. This segmentation allows the system to filter out irrelevant movements while maintaining manageable complexity through modular design.
Solution Approach 2:
The direction specifying unit performs preliminary action by determining the user's direction before the gesture detection unit attempts to detect gestures. This preliminary direction specification acts as a filter that prevents false positives from movements unrelated to the user's intended action, thereby improving detection accuracy without requiring complex simultaneous analysis.
2Ease of operation
If the system detects gestures from any direction, then user convenience is improved, but detection accuracy deteriorates due to irrelevant movements
Solution Approach 1:
The system dynamically adjusts the detection parameters based on the user's direction. The gesture detection unit adapts its sensitivity and detection criteria according to the direction specified by the direction specifying unit, allowing the system to maintain high accuracy while responding to users approaching from various directions.
Solution Approach 2:
The system changes the detection parameters (such as detection angle, sensitivity threshold) based on the user's direction relative to the vehicle. This allows the system to accommodate users approaching from any direction while maintaining accurate gesture detection by adjusting parameters to match the expected gesture direction.
3Measurement precision
If direction specification is added to improve gesture detection accuracy, then detection precision is improved, but the device complexity increases
Solution Approach 1:
The direction specifying unit serves multiple functions: it determines user direction for accurate gesture detection, filters irrelevant movements, and provides contextual information for the gesture detection unit. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in overall device complexity while achieving improved detection precision.
Data Source
AI summary
A vehicle operation detection device is applicable to a vehicle including a vehicle body in which an opening portion is provided, an opening and closing body which opens and closes the opening portion, an actuator which causes the opening and closing body to perform opening and closing operations, and a camera which captures an image around the opening portion, and is configured to detect a gesture of a user for starting at least one of the opening operation and the closing operation. The device includes: a direction specifying unit that specifies a direction of the user with respect to the vehicle based on the image captured by the camera; and a gesture detection unit that detects the gesture including a motion in a direction associated with the direction of the user, based on the image captured by the camera, when the direction specifying unit specifies the direction of the user.