AR Virtual Object Synchronization for Multiplayer Scene Consistency
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Solution Overview
Problem
In multiplayer games using augmented reality (AR) technology, it is challenging for users to experience a specific scene in the same manner due to limitations in the viewing angle of head-mounted displays (HMDs) and differences in user movement, making it difficult to control and synchronize the rendering of virtual objects across multiple users.
Innovation Solution
An information processing device that determines the position and orientation of mobile terminals and controls the display of virtual objects, allowing them to start and end motions asynchronously but in a synchronized manner, ensuring each user experiences the scene consistently despite limited viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rendering camera is forcibly controlled to show specific scenes, then the scene consistency is improved, but the adaptability to user position and orientation deteriorates
Solution Approach 1:
The system determines in advance whether each user should experience a specific scene by checking if they are at a predetermined position, and prepares the motion start timing and display position information accordingly. This preliminary determination allows the system to provide consistent scenes to users at the same location while adapting to individual positions.
Solution Approach 2:
The system provides different motion start timings and display positions tailored to each user's specific position and orientation. Users at different locations receive customized display parameters, ensuring each user experiences the scene appropriately for their local context while maintaining overall consistency.
2Area of stationary object
If the viewing angle of HMD is increased to capture characters at all times, then the scene coverage is improved, but the device complexity increases
Solution Approach 1:
Instead of using a fixed wide-angle display, the system dynamically adjusts the display position and timing of virtual objects based on each user's position and orientation. This dynamic adaptation allows the standard viewing angle to effectively cover the necessary scene area without requiring physical changes to the HMD.
Solution Approach 2:
The system changes display parameters (position, timing) rather than physical parameters (viewing angle) to achieve comprehensive scene coverage. By adjusting when and where virtual objects appear on the display, the system effectively expands coverage without modifying the HMD hardware.
3Stability of the object's composition
If users are forced to move to specific positions to experience scenes, then the scene consistency is improved, but the ease of operation deteriorates
Solution Approach 1:
Instead of forcing users to move to specific positions, the system inverts the approach by bringing the specific scene to the user's current position through customized display timing and position. Users experience consistent scenes without being required to relocate, maintaining both consistency and ease of operation.
Data Source
AI summary
This information processing device includes: a control device which determines whether or not a first terminal is in a first position in a real space, controls, on the basis of the determination that the first terminal is in the first position, the first terminal to start superimposing a virtual object according to the first position on the real space, determines whether or not the second terminal different from the first terminal is in the first position, and controls the second terminal to start superimposing the virtual object on the real space, on the basis of the determination that the second terminal is in the first position. The control device executes differently the start of a first operation of the virtual object by the first terminal and the start of a second operation of the virtual object by the second terminal, with respect to at least one among the display start timing and the display start position of the virtual object, and synchronizes the end of the first operation and the end of the second operation.