Gesture Recognition Apparatus with Dynamic Direction Adjustment
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Solution Overview
Problem
Conventional gesture recognition systems experience decreased operability when users perform gestures from positions that are not directly in front of the screen or camera, leading to inaccurate motion detection and difficulty in specific directions, such as horizontal or vertical gestures.
Innovation Solution
A gesture recognition apparatus that determines the operational direction based on the divergence from the screen or camera to the user, using a fisheye lens to obtain position information, and adjusts the recognition and control accordingly to maintain high operability regardless of user position, without requiring additional cameras or sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the gesture recognition apparatus uses a fixed recognition direction (e.g., horizontal only), then the recognition accuracy is high when the user is in front of the screen, but the operability deteriorates when the user is positioned obliquely
Solution Approach 1:
The gesture recognition apparatus dynamically changes the recognition direction (horizontal or vertical) based on the user's position relative to the screen. When the user is detected to be in an oblique position, the system switches between horizontal and vertical recognition modes, making the system adaptable rather than fixed, thereby maintaining both accuracy and operability across different user positions
Solution Approach 2:
The system changes the recognition parameter (direction angle) based on user position. By calculating the angle between the user's position and the screen normal, the system adjusts the recognition direction parameter to match the user's viewing angle, ensuring accurate gesture recognition regardless of position
2Device complexity
If the gesture recognition apparatus recognizes gestures in a fixed direction, then the system complexity is low, but the adaptability to different user positions is poor
Solution Approach 1:
The gesture recognition apparatus achieves multi-functionality by implementing both horizontal and vertical gesture recognition capabilities within a single system. The direction determination unit enables the system to function in multiple recognition modes, making it universally applicable to different user positions without requiring separate recognition systems for each direction
Solution Approach 2:
The system dynamically selects between horizontal and vertical recognition modes based on user position, adding adaptability without significantly increasing hardware complexity. The direction determination unit calculates user position and switches recognition modes accordingly, providing versatility through software-based dynamic adjustment
3Measurement precision
If additional cameras or sensors are added to improve user position detection, then the position detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The existing camera serves multiple functions: it captures images for gesture recognition and simultaneously provides user position information for direction determination. By reusing the camera data for both purposes, the system achieves accurate user position detection without adding separate sensors or cameras, thereby avoiding increased device complexity
Solution Approach 2:
The system uses its own camera resource to determine user position and adjust recognition direction, rather than relying on external sensors. The camera data is processed to extract both gesture information and position information, allowing the system to serve its own positioning needs without additional hardware
Data Source
AI summary
A gesture recognition apparatus (200) which controls a display device (101) based on a gesture operation performed by a user in a vicinity of a screen (101a) includes: a picture obtainment unit (201) which obtains a picture of the vicinity of the screen (101a); a direction determination unit (204) which determines, based on position information indicating a direction from the screen (101a) or the picture obtainment unit (201) toward the user, an operational direction which is a direction of a movement to be recognized as the gesture operation; a gesture recognition unit (205) which recognizes, as the gesture operation, a movement of whole or part of a body of the user in the operational direction determined by the direction determination unit, with reference to the obtained picture; and a display control unit (206) which controls the display device (101) based on the recognized gesture operation.