Holographic Keyboard Display with Adaptive Hand Tracking
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Solution Overview
Problem
Generating a holographic keyboard-hand interface that provides immersive and realistic touch-like interaction is challenging due to hand drift and misalignment, leading to unintentional key selections and unnatural user positions.
Innovation Solution
A method that uses depth information to display a holographic hand image in a virtual hand plane and adaptively positions a holographic keyboard image at a virtual distance under the hand image, allowing for consistent interaction regardless of user position or hand movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed-position holographic keyboard is displayed, then the keyboard structure is simple and easy to implement, but the user must maintain unnatural fixed body and hand positions to interact with it
Solution Approach 1:
The holographic keyboard transitions from a fixed static position to a dynamic position that automatically tracks and adapts to the user's hand movements. The keyboard's virtual position is continuously updated based on real-time hand tracking data, allowing the user to move naturally while the keyboard follows along, eliminating the need for unnatural fixed positioning.
Solution Approach 2:
The system implements feedback by continuously monitoring the user's hand position through depth sensors and cameras, then using this information to automatically adjust the holographic keyboard's position in real-time. This closed-loop feedback mechanism ensures the keyboard remains in the optimal interaction position relative to the user's hand, improving comfort without requiring complex manual adjustment mechanisms.
2Reliability
If the holographic keyboard is positioned at a fixed distance from the user, then the display system is simple, but hand drift causes misalignment between the hand hologram and keyboard hologram
Solution Approach 1:
The keyboard's distance from the user is dynamically adjusted based on real-time hand tracking. Instead of maintaining a fixed distance, the system calculates the optimal distance based on the user's hand position and movement patterns, ensuring consistent alignment between the hand hologram and keyboard hologram even when the user drifts or changes position.
Solution Approach 2:
The system uses feedback from depth sensors and cameras to continuously monitor hand position and automatically adjust the keyboard's virtual distance. This real-time feedback loop detects hand drift and compensates for it by repositioning the keyboard hologram, maintaining reliable alignment without requiring the user to consciously correct their position.
3Measurement precision
If the keyboard hologram position is fixed relative to the display, then the system is easy to control, but false selection determinations occur when the user's hand moves inadvertently
Solution Approach 1:
The keyboard hologram's position is dynamically linked to the hand hologram's position rather than being fixed to the display. As the user's hand moves, the keyboard automatically adjusts its position to maintain the correct spatial relationship, preventing false selection determinations that would occur with a static keyboard position.
Solution Approach 2:
The system implements feedback by continuously tracking hand position through depth cameras and sensors, then using this information to adjust the keyboard hologram's position in real-time. This feedback mechanism distinguishes between intentional hand movements (typing actions) and inadvertent drift, improving key selection accuracy by ensuring the keyboard remains properly positioned relative to the intended target.
Data Source
AI summary
Embodiments that relate to displaying holographic keyboard and hand images in a holographic environment are provided. In one embodiment depth information of an actual position of a user's hand is received from a capture device. The user's hand is spaced by an initial actual distance from the capture device, and a holographic keyboard image is displayed spatially separated by a virtual distance from a holographic hand image. The user's hand is determined to move to an updated actual distance from the capture device. In response, the holographic keyboard image is maintained spatially separated by substantially the virtual distance from the holographic hand image.