Transparent Display Parallax Correction via Eye Position Detection
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Solution Overview
Problem
Transparent display systems face challenges in accommodating users with varying ocular dominance, leading to different degrees of parallax, which affects the accurate superimposition of images on background objects.
Innovation Solution
A parallax correction method that involves capturing images of the user, transparent display device, and background object, detecting anchor points, calculating visual extension lines, and determining an equivalent eye position to adjust the display position accordingly, ensuring accurate image alignment based on individual ocular dominance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed display position is used on the transparent display device, then the device structure is simple, but the image alignment accuracy deteriorates for users with different ocular dominance
Solution Approach 1:
The display position on the transparent display device is made dynamic rather than fixed. The system calculates and adjusts the display position based on the user's equivalent eye position, which varies with ocular dominance. This allows the display position to adapt to different users while maintaining accurate image alignment without requiring complex hardware modifications for each user configuration.
Solution Approach 2:
The system changes the display position parameter based on detected user characteristics. By calculating the equivalent eye position from image data and using it to determine the appropriate display position, the system adjusts key display parameters to achieve accurate image superimposition for users with different ocular dominance, resolving the contradiction between fixed structure and alignment accuracy.
2Measurement precision
If the display position is adjusted for each user's ocular dominance, then the image alignment accuracy is improved, but the operation complexity increases
Solution Approach 1:
The system performs automatic detection and calculation of the user's equivalent eye position without requiring manual input or configuration. The image capturing device automatically captures images, the processing device calculates the equivalent eye position, and the display position is automatically adjusted. This self-service approach maintains high image alignment accuracy while keeping the operation simple for users.
Solution Approach 2:
The system uses image capturing devices to detect the user's position and ocular dominance, then feeds this information back to adjust the display position accordingly. This closed-loop feedback mechanism automatically adapts the display to each user's characteristics, achieving accurate image alignment without increasing operational complexity for the user.
3Adaptability or versatility
If multiple display positions are prepared for different users, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
Instead of preparing multiple fixed display positions in advance, the system dynamically calculates the appropriate display position based on real-time detection of the user's equivalent eye position. This dynamic adaptation provides high user adaptability while avoiding the complexity of managing multiple pre-configured positions or hardware variants.
Solution Approach 2:
A single transparent display device can serve multiple users with different ocular dominance by using a universal detection and calculation mechanism. The image capturing device and processing device work together to determine the appropriate display position for any user, making the system universally adaptable without requiring user-specific hardware configurations.
Data Source
AI summary
A parallax correction method for a transparent display system is provided. The transparent display system includes a transparent display device located between a background object and a user. The parallax correction method includes the following steps. A gaze point is displayed on the transparent display device. An image including the transparent display device, the background object and the user is captured. At least two display anchor points and at least two corresponding background object anchor points are detected according to the image. The display anchor points are located on the transparent display device, and the background object anchor points are located on the background object. A plurality of visual extension lines extending from the display anchor points and the corresponding background object anchor points are obtained. An equivalent eye position of the ocular dominance of the user is obtained according an intersection of the visual extension lines.