Hand Gesture Recognition Input System for Mobile Phones
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Solution Overview
Problem
Existing input technologies for mobile phones, such as keypads, touchscreens, and speech recognition, face limitations in space constraints, noise sensitivity, and accuracy, necessitating a novel input method that can efficiently utilize limited screen space and enhance user interaction.
Innovation Solution
A hand gesture recognition input system that captures and compares hand gesture images with stored control images to execute corresponding commands, utilizing a camera, memory, and controller to manage pointer operations in a three-dimensional virtual space, allowing for efficient control of mobile phone functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a keypad input system is used, then input functionality is provided, but space for arranging keys is insufficient
Solution Approach 1:
The patent transitions from traditional 2D keypad or touchscreen input to 3D hand gesture recognition in spatial air space. The gesture recognition system captures hand movements from multiple cameras and processes them in three-dimensional space, allowing users to interact with the device without consuming physical screen or device space.
2Ease of operation
If speech recognition input system is used, then alternative input method is provided, but recognition reliability is dependent on noise environment
Solution Approach 1:
The patent replaces acoustic-based speech recognition with optical-based gesture recognition. Instead of analyzing sound waves that are susceptible to noise interference, the system uses cameras to capture and analyze visual hand gesture data, providing more reliable recognition in various acoustic environments.
3Ease of operation
If touchscreen input system is used, then manual input alternative is provided, but key event generation is limited by touchscreen area
Solution Approach 1:
The patent extends the input interface from the limited 2D touchscreen surface to 3D spatial air space surrounding the device. Hand gestures are recognized and processed in three-dimensional space, effectively unlimited in scope, allowing complex input operations without being constrained by the physical touchscreen dimensions.
4Area of stationary object
If hand gesture recognition is implemented, then space utilization is improved, but system complexity increases
Solution Approach 1:
The patent employs a camera, already present in mobile phones for photography, to serve dual purposes: capturing images for gesture recognition and utilizing existing image processing capabilities. This multi-functional approach leverages existing hardware resources, reducing the need for additional specialized components and mitigating system complexity increases.
Data Source
AI summary
A handheld gesture recognition control apparatus and its method are provided for a mobile phone. The input method of the present invention includes collecting a plurality of images; storing the images as control images; mapping the control images to corresponding control commands; capturing an image taken by a camera as a current image; comparing the current image to the control images; selecting one of the control images as a target control image according to a comparison result; extracting a control command mapped to the target control image; and executing the control command.