Calibration Device for Touchless Gesture Display
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Solution Overview
Problem
Existing electronic display screens lack an easy and efficient method for retrofitting touchless gesture control capabilities, with existing solutions either providing limited hand recognition precision or requiring cumbersome sensor calibration.
Innovation Solution
A calibration device with a main body, a foot for stable positioning, and a machine-readable calibration pattern detectable by optical sensors, which simplifies the calibration process by providing visual and mechanical signaling for correct placement and automatic triggering of calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If touchless gesture control is added to existing displays, then user safety and hygiene are improved, but calibration complexity increases
Solution Approach 1:
The calibration device automatically triggers the calibration process when placed on the display surface, eliminating the need for manual calibration initiation. The device self-configures by detecting its own position and orientation through the calibration pattern, performing the calibration function autonomously without requiring user knowledge or intervention in the calibration steps.
Solution Approach 2:
A physical calibration device with a machine-readable calibration pattern serves as an intermediary between the user and the touchless gesture system. This intermediary carries encoding information about the device's position and orientation, which the system decodes to automatically configure the gesture recognition parameters, simplifying the overall calibration process.
2Measurement precision
If manual calibration procedures are used, then calibration precision can be achieved, but ease of operation deteriorates
Solution Approach 1:
The patent replaces manual mechanical calibration procedures with an automated optical detection system. The machine-readable calibration pattern is detected by optical sensors, and the system automatically calculates calibration parameters based on the detected pattern position and orientation, eliminating manual measurement and calculation steps while maintaining precision.
Solution Approach 2:
The calibration device is pre-configured with a machine-readable calibration pattern that encodes positional and orientational information. This preliminary encoding of calibration data in the pattern allows the system to automatically retrieve and apply the correct calibration parameters when the device is placed on the display, eliminating the need for real-time manual calibration adjustments.
3Measurement precision
If multiple calibration points are used, then calibration accuracy is improved, but calibration time increases
Solution Approach 1:
The calibration process is segmented into automated detection and calculation phases. The calibration pattern is divided into machine-readable code elements that can be quickly detected by optical sensors, and the calibration parameters are automatically calculated from the detected positions, reducing the time required to process multiple calibration points compared to manual methods.
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
Enables precise and easy calibration of electronic display screens for touchless gesture control, reducing the risk of incorrect positioning and enhancing user experience by automating the calibration process.
Implementation Method 1
a calibration pattern which comprises a machine-readable code being detectable by one or more optical sensors
Data Source
AI summary
A calibration device 100 for use in a calibration process of an electronic display screen 200 for touchless gesture control, the calibration device 100 comprising:a main body 102 defining a main axis 101 of the calibration device 100, wherein the main axis 101 extends from a proximal end 102a to a distal end 102b of the main body 102; a first foot 109a at the distal end 102b, the first foot 109a having a footing surface 110 being placeable on the electronic display screen 200 such that the footing surface 110 is in contact with and parallel to the electronic display screen 200, wherein the footing surface 110 is oriented at a predetermined angle, in particular 90°, with respect to the main axis 101 of the calibration device 100; a calibration pattern 103 comprising a machine-readable code being detectable by one or more optical sensors 300, in particular one or more depth cameras, wherein the one or more optical sensors 300 are arranged at or near the electronic display screen 200 and are configured to observe a spatial area in front of the electronic display screen 200 in order to detect a gesture input of a user.