Glasses-Free 3D Videoconferencing Booth With Actuated View Matching
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Solution Overview
Problem
Traditional virtual meeting systems provide only two-dimensional imaging, leading to a lack of presence and social disconnect among participants, and three-dimensional systems require complex computation and bandwidth.
Innovation Solution
A videoconferencing booth using mechanical components like actuators to match views between participants, employing stereo video streams and minimal metadata for computations, and tracking head and facial motion to adjust projector and image sensor positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional two-dimensional displays are used for virtual meetings, then the system complexity and bandwidth requirements are low, but participants experience social disconnect and lack of presence
Solution Approach 1:
The patent transitions from traditional 2D video conferencing to a 3D spatial video system. Multiple cameras capture video from different angles and depths, creating a three-dimensional representation of the remote participant. This dimensional upgrade provides a more immersive and realistic sense of presence while maintaining manageable system complexity through standardized camera arrays and processing pipelines.
Solution Approach 2:
The patent introduces a light field display as an intermediary device between the user and the remote participant. This display reconstructs the 3D light field information captured by multiple cameras, creating a realistic visual representation that preserves depth cues and spatial relationships. The light field display acts as a mediator that translates complex multi-camera data into a natural, immersive viewing experience without requiring special glasses or headsets.
2Reliability
If three-dimensional scene sensing is implemented, then a sense of presence is achieved, but computation and bandwidth requirements increase considerably
Solution Approach 1:
The patent performs preliminary action by capturing comprehensive 3D spatial information upfront using multiple synchronized cameras during the video call. The system pre-processes and encodes the light field data, organizing depth maps and multi-angle views in advance. This preliminary capture and organization of spatial data reduces the need for intensive real-time computation during playback, as the 3D information is already structured and ready for efficient rendering on the light field display.
3Adaptability or versatility
If mechanical actuators are used to match views between participants, then head and facial motion tracking is achieved, but device complexity increases
Solution Approach 1:
The patent employs tracking systems that serve multiple functions: they monitor head position, facial expressions, and eye direction simultaneously. This multi-functional tracking approach eliminates the need for separate mechanical components for each tracking task. The same sensor array and processing algorithm handle various tracking requirements, reducing overall device complexity while maintaining comprehensive view-matching capability across different participants.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides a three-dimensional viewing experience without the need for glasses, reducing reflections and barriers, and minimizing computational and bandwidth requirements.
Implementation Method 1
a stereoscopic projector
Implementation Method 2
provide for a three-dimensional viewing experience without the need for glasses
Implementation Method 3
a second actuator configured to translate the image sensor arrangement along at least a second axis
Implementation Method 4
tracking head and facial motion to adjust projector and image sensor positions
Data Source
AI summary
A videoconferencing booth (100) and operating method therefor. The videoconferencing booth (100) comprises a tracking system (106), a stereoscopic projector (104), a first actuator (114) configured to translate the stereoscopic projector (104), an image sensor arrangement (108), a second actuator (118) configured to translate the image sensor arrangement (108), and a controller (202). The controller (202) is configured to obtain a first stream of first positions from the tracking system (106), transmit commands to the first actuator (114) to adjust the position of the stereoscopic projector (104) based on the first stream of first positions, and transmit the first stream of first positions to a remote videoconferencing booth. The controller (202) is further configured to receive, from the remote videoconferencing booth, a second stream of second positions and transmit commands to the second actuator (118) to adjust the position of the image sensor arrangement (108) based on the second stream of second positions.