Time-Dividing Motion Guide Display for Head-Mounted Follow-Through
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Solution Overview
Problem
Existing methods for guiding a user to follow another person's motion, such as in video see-through head-mounted displays, face challenges in maintaining accuracy and immersion due to the complexity of recognizing positional errors between multiple body parts, particularly in tasks like following the motion of ten fingers, leading to increased cognitive burden and loss of immersion.
Innovation Solution
Presenting a self-image and a reference image alternately in a time-dividing manner at a predetermined frequency and ratio, allowing for precise following by reducing positional and velocity errors, and inducing a blending feeling that enhances natural motion following.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If corresponding points of multiple body parts are presented simultaneously in a synthesized view, then the user can see both self-image and reference image at the same time, but the cognitive burden increases and following accuracy decreases
Solution Approach 1:
The patent segments the simultaneous presentation of self-image and reference image into time-division. The display alternates between showing only the self-image and only the reference image at different time intervals. This temporal segmentation allows the user to focus on one image at a time, reducing cognitive load while maintaining following accuracy through sequential comparison of corresponding body parts.
2Measurement precision
If the user directs attention back and forth between two person's perspective videos to recognize positional error, then the user can identify corresponding points, but the sense of immersion is lost
Solution Approach 1:
The patent implements periodic action by alternating the display of self-image and reference image at regular time intervals. This periodic switching creates a rhythmic visual pattern that allows the user to naturally track the alternation between self and reference views, facilitating positional error recognition without requiring deliberate attention switching, thereby preserving the sense of immersion in the cooperative motion experience.
3Loss of information
If view synthesis method is used to display both perspectives simultaneously, then comprehensive information is provided, but following accuracy deteriorates due to complexity of multiple body parts
Solution Approach 1:
The patent segments the information presentation temporally rather than spatially. Instead of displaying both self-image and reference image simultaneously in the same visual field (which creates complexity), the system segments the time period into distinct intervals where each image is displayed separately. This temporal segmentation maintains information completeness while eliminating the visual complexity that degrades following accuracy.
Data Source
AI summary
A motion guide display device includes a head-mountable image display device that displays an image, a camera that takes a self image from a first person perspective, an image display processing unit that displays a reference image from a first person perspective as a following target and the self image at the display unit alternately in a time-dividing manner under the condition generating a blending feeling, and a display mode setting unit that lets the image display processing unit operate within the range of cycles (frequencies) and self-other ratios as the condition generating a blending feeling. This can bring the blending feeling with the reference image, and can support the continuation of spontaneous following motion.