Gesture Direction Recognition Using Hand Orientation Analysis
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Solution Overview
Problem
Conventional gesture-based input operations in electronic devices can lead to erroneous recognition of user intentions, resulting in incorrect device responses when gestures are performed without direct contact, due to the device's inability to accurately determine the intended direction of gestures.
Innovation Solution
An electronic device equipped with a proximity sensor and a controller that uses specific judgment criteria based on the hand used to perform gestures, allowing for accurate determination of gesture direction and preventing erroneous operations by differentiating between intended and recognized gestures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If gesture-based input operations are implemented without direct contact, then ease of operation is improved, but measurement precision of gesture direction deteriorates
Solution Approach 1:
The gesture recognition process is segmented into multiple independent analysis steps: detecting hand approach, determining movement direction, identifying gesture type, and recognizing intended operation. Each segment handles a specific aspect of gesture interpretation, improving overall precision without requiring direct contact.
Solution Approach 2:
The system introduces an intermediary processing layer between the proximity sensor detection and the final operation execution. This intermediary analyzes the gesture trajectory, hand orientation, and movement patterns to accurately determine user intent, preventing erroneous recognition while maintaining contactless operation.
2Device complexity
If simple proximity sensor output is used for gesture detection, then device complexity is reduced, but reliability of gesture recognition deteriorates
Solution Approach 1:
The system dynamically adjusts recognition criteria based on gesture characteristics. It adapts the decision-making process to account for different hand movements, speeds, and trajectories, allowing reliable recognition using only simple proximity sensor data without requiring complex hardware.
Solution Approach 2:
The system changes the parameters of analysis by examining multiple aspects of the gesture including approach velocity, movement direction, hand orientation, and trajectory curvature. By analyzing these parameter changes over time, the system achieves high recognition reliability using simple sensor output.
3Ease of operation
If gesture direction is determined without considering hand orientation, then ease of operation is improved, but loss of information about user intent increases
Solution Approach 1:
The system adds the dimension of hand orientation analysis to the gesture recognition process. By considering the rotational angle and palm orientation in addition to movement direction, it captures more information about user intent without complicating the basic gesture input mechanism.
Solution Approach 2:
The system performs preliminary analysis of hand orientation and approach direction before determining the final gesture meaning. This preliminary action captures critical information about user intent that would be lost if only final position changes were considered.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents erroneous operations by determining the direction of user gestures with high accuracy, ensuring that the device responds correctly to the user's intended actions, even when gestures are performed without direct contact.
Implementation Method 1
an infrared sensor such as a proximity sensor
Data Source
AI summary
An electronic device includes a proximity sensor and a controller configured to determine a direction of a gesture by a user on the basis of an output from the proximity sensor and in accordance with the hand the user uses to operate the electronic device.