Head-Mounted Display Rotation Compensation for Detached Camera
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Solution Overview
Problem
Existing head-mounted displays (HMDs) face challenges in performing rotation compensation for images captured by a camera detached or mounted to the HMD, failing to accurately adjust for the angles of rotation of both the HMD and the camera, which results in inclined or improperly oriented images.
Innovation Solution
A head-mounted display system that includes a processor to detect and compensate for the angles of rotation of both the HMD and the camera, displaying a horizontal image through rotation compensation and indicating the camera's detachment or mounting status, allowing simultaneous multiple operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If rotation compensation is performed using only one angle sensor (either HMD or camera), then the device complexity is reduced, but the image orientation accuracy deteriorates when the camera is detached from the HMD
Solution Approach 1:
The system dynamically adjusts the rotation compensation strategy based on the camera mounting status. When the camera is detached, the system switches to using both HMD and camera angle sensors to compensate for relative rotation. When mounted, it uses only the HMD sensor, thereby optimizing device complexity while maintaining accuracy across different operational states
Solution Approach 2:
The system changes the compensation parameters (which angle to use) based on the camera mounting state. By detecting whether the camera is attached or detached, the system selects the appropriate angle parameter (either HMD angle only, or combined HMD and camera angles) to achieve accurate image orientation for the current configuration
2Adaptability or versatility
If the camera is made detachable from the HMD, then the adaptability of the device is improved, but the reliability of image capture and orientation is worsened
Solution Approach 1:
The system incorporates feedback mechanisms to detect the camera's mounting status and automatically adjusts the image capture and orientation processing accordingly. By monitoring whether the camera is attached or detached and responding with appropriate compensation algorithms, the system maintains reliable image capture across different mounting configurations
Solution Approach 2:
The HMD system is designed to universally handle both mounted and detached camera configurations through a unified control method. The processor automatically adapts the rotation compensation algorithm based on camera status, making the system equally reliable whether the camera is permanently attached or temporarily detached for repositioning
3Device complexity
If rotation compensation is not performed, then the device complexity is reduced, but the image quality and user experience are worsened due to inclined images
Solution Approach 1:
Instead of using complex mechanical gyroscopes or multiple sensors to physically stabilize the camera, the system substitutes mechanical stabilization with computational image processing. By applying rotation compensation algorithms to the captured images based on detected angles, the system achieves horizontal orientation without requiring complex mechanical stabilization mechanisms
Data Source
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AI summary
Disclosed herein are a head-mounted display and a method of controlling the same, more particularly, a method of performing rotation compensation on a captured image based on an angle of rotating a user wearing the head-mounted display and an angle of rotating a camera detached from the head-mounted display.