MR Background Camera Mode Switching for Power-Aware Display
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Solution Overview
Problem
Head-mounted displays (HMDs) used for mixed reality (MR) consume excessive power due to high frame rates and resolutions, and existing power-saving techniques are inadequate for dynamic user interactions, leading to a trade-off between power consumption and user experience quality.
Innovation Solution
An information processing apparatus that adapts the drive mode of the background camera based on the size of the virtual space display region, transitioning to power-saving modes when the display region exceeds a preset threshold, thereby reducing power consumption without significantly impacting user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the camera operates at high frame rate and high resolution to capture real space images, then the quality of the background image is improved, but the power consumption increases
Solution Approach 1:
The camera operates in multiple drive modes (first drive mode with high frame rate and resolution, second drive mode with lower frame rate and resolution) and dynamically switches between them based on the size of the virtual space display region. This dynamic adjustment allows the system to optimize power consumption while maintaining image quality when necessary.
Solution Approach 2:
The system changes the operational parameters of the camera (frame rate and resolution) based on the display region size. When the virtual space display region is large, the camera switches to the second drive mode with lower frame rate and resolution to reduce power consumption. When the display region is small, it switches to the first drive mode with high frame rate and resolution to ensure image quality.
2Use of energy by moving object
If the camera lowers the frame rate or resolution to reduce power consumption, then the power consumption is reduced, but the quality of the background image deteriorates
Solution Approach 1:
The system applies different image quality levels locally based on the display region size. When the virtual space display region is large, the background image quality can be reduced without significantly impacting user experience. When the display region is small, high image quality is maintained. This local quality adjustment allows power consumption to be reduced while preserving image quality where it matters most.
3Use of energy by moving object
If power saving control is performed at a predetermined angular range, then the power consumption is reduced, but it is difficult to achieve power saving suitable for the display mode of the MR image
Solution Approach 1:
The system uses the size of the virtual space display region as a dynamic parameter to determine the appropriate camera drive mode. This parameter-based control approach is more adaptable to different display modes than fixed angular range control, allowing the system to achieve power saving that is suitable for the actual MR image display mode while maintaining flexibility.
Data Source
AI summary
An information processing apparatus capable of adaptively reducing power consumption. The information processing apparatus includes a memory device that stores a set of instructions, and at least one processor that executes the set of instructions to obtain a region of a virtual space to be displayed on a display unit in a manner superimposed on a real space captured by a first camera as a display region, and switch a drive mode of the first camera according to a size of the display region.