3D Image Alignment Using Gaze and Gravity Direction Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 3D display devices struggle to maintain a stable 3D image view when the device or user's orientation changes, such as during movement, leading to a disrupted viewing experience.
Innovation Solution
Incorporating gaze direction and gravity direction measurement units to dynamically adjust and transform 3D image data, ensuring consistent viewing regardless of device or user orientation changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display device moves or user orientation changes, then the viewing scenario becomes more flexible and adaptable, but the 3D image view becomes unstable and disrupted
Solution Approach 1:
The patent implements dynamic adjustment of the 3D image viewpoint based on real-time detection of device motion (via accelerometer and gyro sensor data) and user gaze direction. The viewpoint coordinates are continuously updated to maintain proper alignment between the displayed 3D image and the user's viewing direction, even as the device moves or rotates. This dynamic compensation resolves the contradiction by allowing movement flexibility while maintaining image stability through active recalibration.
Solution Approach 2:
The system employs feedback mechanisms where sensor data (accelerometer, gyro, gaze direction) is continuously fed back to the control unit, which then adjusts the viewpoint transformation parameters accordingly. This closed-loop control ensures that any deviation from the correct viewing orientation is detected and corrected, maintaining stable 3D image presentation despite changes in device orientation or user position.
2Ease of operation
If the 3D image is dynamically adjusted to follow user gaze direction, then the viewing experience is improved and maintained during movement, but the computational complexity and processing requirements increase
Solution Approach 1:
The patent pre-calculates and stores transformation matrices and viewpoint adjustment algorithms in the control unit. When motion is detected or gaze direction changes, the system retrieves and applies pre-prepared transformation data rather than computing complex 3D geometry in real-time. This preliminary preparation reduces computational burden during actual viewing, maintaining high-quality adaptive viewing experience while managing processing complexity through advance computation.
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A three-dimensional (3D) display device for displaying a 3D image using a gaze direction of a user and a gravity direction includes a gaze direction measuring unit to measure the gaze direction, a gravity direction measuring unit to measure a gravity direction, a coordinate axis direction calculating unit to calculate a coordinate axis direction for displaying the image in the 3D space based on the gaze direction and the gravity direction, a data obtaining unit to obtain image data, a data generating unit configured to generate 3D image data based on the image data and the coordinate axis direction , and a display unit to display the 3D image based on the generated 3D image data.