Stereo Image Alignment via Spherical Rotation
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Solution Overview
Problem
Head-mounted displays often cause VR sickness due to significant misalignment, parallax, and tilt differences between right-eye and left-eye images, which existing technologies fail to adequately address.
Innovation Solution
An image adjustment system that includes a camera capturing stereo images, an image adjustment device generating and processing spherical surface images, and a controller to adjust the images displayed on a head-mounted display, allowing users to rotate the spherical surface images to align and correct the right-eye and left-eye images based on user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a head-mounted display uses a stereo camera to capture right-eye and left-eye images for 3D viewing, then the user can experience immersive virtual reality, but VR sickness occurs due to misalignment, parallax, and tilt differences between the images
Solution Approach 1:
The patent implements dynamic adjustment of the spherical surface image rotation based on user input and real-time detection of image alignment status. The system continuously adapts the rotation angle to maintain proper alignment between right-eye and left-eye images, transforming a static image display system into a dynamic one that actively compensates for misalignment, parallax, and tilt issues causing VR sickness
Solution Approach 2:
The system incorporates feedback mechanisms where the controller receives user input about perceived misalignment and automatically adjusts the spherical surface image rotation accordingly. This closed-loop feedback system allows the display to respond to user experience and correct alignment issues in real-time, reducing the harmful effects of image misalignment
2Reliability
If the spherical surface image is rotated to align right-eye and left-eye images, then misalignment and parallax are reduced, but the system complexity increases due to additional processing requirements
Solution Approach 1:
The patent utilizes a spherical surface image as the basis for alignment adjustments. By mapping the stereo images onto a spherical surface and rotating this spherical representation, the system achieves complex 3D alignment corrections through a unified rotational transformation. This approach simplifies the mathematical complexity compared to adjusting three separate image planes while maintaining high alignment accuracy
Solution Approach 2:
The spherical surface image rotation mechanism serves multiple functions simultaneously: it corrects misalignment between images, adjusts parallax differences, and compensates for tilt variations. This single multi-functional approach replaces what would otherwise require separate adjustment mechanisms for each type of distortion, reducing overall system complexity
Data Source
AI summary
An image adjustment system includes a camera, an image adjustment device, an image display device, and a controller. The image display device displays a captured image adjusted by the image adjustment device. The image adjustment device includes an image generator and an image processor. The image generator generates a spherical surface image. The image processor acquires the spherical surface image from the image generator to display the spherical surface image on the image display device on the basis of instruction information output from the controller. The image processor rotates the spherical surface image on the basis of the instruction information. The image processor adjusts a right-eye image or a left-eye image of the captured image displayed on the image display device in accordance with a rotation of the spherical surface image.