HMD Hand Motion Recording for Spatially Consistent Object Alignment
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Solution Overview
Problem
Existing methods for recording and demonstrating hand motion in video tutorials are cumbersome, requiring external equipment or devices, and pose challenges for viewers in accurately mimicking complex hand motions due to angle and background environment issues.
Innovation Solution
A head-mounted display (HMD) device is used to optically record hand motion, allowing hands to remain free, and the recorded motion is processed to separate irrelevant background, creating a graphical representation that can be displayed in a spatially consistent manner relative to objects, enabling viewers to perceive hand motion from different angles and positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external recording equipment is used to record hand motion, then recording capability is provided, but device complexity and ease of operation are worsened
Solution Approach 1:
The patent combines the recording device with the display device into a single integrated unit. The recording device includes a camera and processor that are merged with the display screen, eliminating the need for separate external recording equipment. This integration directly resolves the contradiction by reducing device complexity while maintaining recording capability and improving ease of operation.
2Measurement precision
If video tutorials are used to demonstrate hand motion, then instructional capability is provided, but measurement precision and reliability are worsened due to angle and background issues
Solution Approach 1:
The patent uses visual enhancement techniques including color coding and graphical overlays to highlight hand motion trajectories and key movement characteristics. The display shows enhanced visual representations with different colors indicating motion intensity, direction, and accuracy, which resolves the contradiction by improving measurement precision while preserving information that would otherwise be lost in standard video tutorials.
Solution Approach 2:
The system creates accurate digital copies of hand motion by capturing and processing video data through integrated sensors and algorithms. These digital replicas preserve precise motion information that can be analyzed and displayed without the limitations of traditional video, resolving the information loss problem while maintaining instructional value.
3Adaptability or versatility
If standard video recording is used, then recording is achieved, but ease of operation and adaptability are worsened due to fixed angles and backgrounds
Solution Approach 1:
The patent implements dynamic recording capabilities where the camera and display can adjust their orientation, position, and viewing angles in real-time based on the user's needs. The system adapts to different hand motions, object positions, and environmental conditions automatically, resolving the contradiction by providing versatility without requiring complex manual configuration.
Solution Approach 2:
The integrated device serves multiple functions including recording, displaying, analyzing, and providing feedback on hand motion. It can adapt to various instructional scenarios, different types of hand motions, and multiple display modes, making it universally applicable while maintaining ease of operation through automated functionality.
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 streamlines the recording and viewing of hand motion, providing clear and intuitive understanding of hand-object interaction, making it easier to mimic and maintaining spatial consistency between the recording and playback environments.
Implementation Method 1
A head-mounted display (HMD) device is used to optically record hand motion
Data Source
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AI summary
Examples are disclosed that relate to representing recorded hand motion. One example provides a computing device comprising a logic subsystem and a storage subsystem comprising instructions executable by the logic subsystem to receive a recorded representation of hand motion determined relative to a virtual model aligned to a first instance of an object, receive image data corresponding to an environment, and recognize a second instance of the object in the environment. The instructions are further executable to align the virtual model to the second instance of the object, and output a parametric representation of hand motion for display relative to the virtual model as aligned to the second instance of the object, such that the parametric representation is spatially consistent with the recorded representation of hand motion relative to the virtual model as aligned to the first instance of the object.