Laser-Projected Hand Interface With Dynamic Pixel Mapping
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Solution Overview
Problem
Existing technologies lack efficient methods for detecting and processing user input, particularly spoken input, using wearable multimedia devices, which are not optimized for seamless interaction with laser projected virtual interfaces.
Innovation Solution
A method is disclosed for projecting a graphical user interface onto a user's hand using a wearable multimedia device, involving data mapping and pixel projection based on spatial dimensions, enabling continuous updating and interaction through gestures and speech queries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a laser projector projects a graphical user interface onto a user's hand, then the interface can be displayed on a portable surface, but the interface size and pixel density must be dynamically adapted to the varying spatial dimensions of the projection region
Solution Approach 1:
The system dynamically adjusts the graphical user interface to match the real-time spatial dimensions of the projection region. The processor continuously receives spatial information, updates the mapping between interface elements and projector pixels, and reprojects the interface. This dynamic adaptation allows the interface to maintain proper proportions and pixel density regardless of the size or shape of the projection surface, resolving the contradiction between interface adaptability and system complexity.
2Manufacturing precision
If the system continuously updates the mapping to maintain interface quality, then the interface remains clear and properly proportioned, but the processing requirements and computational load increase
Solution Approach 1:
The system performs preliminary mapping setup by storing the spatial dimensions and characteristics of the projection region in advance. When the interface needs to be projected, the processor retrieves the pre-stored spatial information and applies the mapping relationship directly, rather than calculating the entire mapping from scratch. This preliminary action reduces real-time computational requirements while maintaining high projection precision, effectively resolving the contradiction between precision and processing efficiency.
3Adaptability or versatility
If the interface is scaled to fit different hand sizes and distances, then the interface remains usable across different users and conditions, but the pixel density may vary affecting interface quality
Solution Approach 1:
The system changes the mapping parameters dynamically based on the detected spatial dimensions of the projection region. When the hand size or projection distance varies, the processor adjusts the scaling factor and pixel density parameters to maintain optimal interface quality. This parameter adjustment ensures that the interface remains both scalable to different users and maintains consistent pixel density for quality display, resolving the contradiction between scalability and pixel density consistency.
Data Source
AI summary
In an example method, a wearable computing device obtains obtain sensor data from one or more sensors, and detects a trigger event based on the sensor data. The trigger event includes a user of the wearable computing device moving an open palm of the user's hand towards the user's face. In response to detecting the trigger event, the wearable computing device obtains a spoken input from the user using or more microphones, and performs one or more operations in accordance with the spoken input.