Camera Rig Positioning for Immersive Virtual Scene Rendering
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Solution Overview
Problem
Current 360° video capture systems are cumbersome and limited to capturing only rotational movements, failing to provide a practical, inconspicuous, and robust solution for teleoperation, and they offer a fixed vantage point, limiting user experience to a single perspective.
Innovation Solution
A method involving a camera rig positioned on a 3D model of an object with cameras designated as Direct View Cameras (DVC) and Secondary View Cameras (SVC), along with a projection rig containing Direct View Projectors (DVP) and Secondary View Projectors (SVP) within a hollow half-sphere, allowing for arbitrary positioning and projection of images to create a virtual scene that mimics the experience of looking through a window or using secondary viewing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple cameras are arranged in a perfect circle or sphere with identical overlap to capture 360° video, then the immersive viewing experience is improved, but the device complexity and practical integration become cumbersome
Solution Approach 1:
The camera system is divided into two functional groups: Direct View Cameras (DVC) positioned at specific locations to capture the environment ahead, and Secondary View Cameras (SVC) positioned to capture other views. This segmentation allows each camera type to serve a specific purpose, simplifying the overall system design while maintaining 360° coverage capability.
Solution Approach 2:
The patent transitions from traditional 2D camera arrangements to a 3D spatial distribution of cameras on the vehicle surface. By positioning cameras in three-dimensional space rather than confined to a single plane or circular rig, the system achieves immersive 360° coverage without requiring a complex mechanical structure.
2Measurement precision
If a fixed camera rig is used to capture 360° video, then the rendering accuracy is improved, but the system cannot capture linear movements and is limited to rotational movements only
Solution Approach 1:
The camera system is designed to perform multiple functions simultaneously: capturing both rotational movements (through the spherical arrangement of cameras) and linear movements (through the specific positioning of DVC and SVC). This multi-functionality allows a single system to provide comprehensive 6DoF tracking capability.
3Stability of the object's composition
If cameras are positioned to provide a single fixed vantage point, then the rendering consistency is improved, but the user experience is limited to one perspective
Solution Approach 1:
The system dynamically switches between different camera views based on the user's head pose and interaction requirements. Rather than being locked to a single fixed vantage point, the system can adaptively select which camera (DVC or SVC) to use, providing a dynamic and flexible viewing experience that maintains rendering consistency.
4Reliability
If traditional camera rigs are used for teleoperation, then the capture capability is improved, but the integration on vehicle is not practical, inconspicuous and robust
Solution Approach 1:
Instead of using a physical camera rig that replicates the complexity of traditional 360° capture systems, the patent uses a simplified approach where cameras are strategically positioned on the vehicle surface to capture key views. This copying approach achieves the necessary capture capability for teleoperation without requiring a cumbersome mechanical rig, making it practical for vehicle integration.
Data Source
AI summary
A method for positioning of cameras on an object that enables accurate rendering of the scene around the object on a dome accurately in real time. The method involves providing a 3D model of the object having a surface, and selecting locations on the surface where the cameras are to be placed to provide a camera rig. The choice of locations is such that every camera has a field of view that overlaps with at least one other camera. The cameras are designated as Direct View Camera (DVC) or a Secondary View Camera (SVC). The method to render a virtual scene includes providing a projection rig that includes a plurality of projectors within a hollow half-sphere, wherein the hollow half-sphere includes an inner surface and an outer surface. Each of the plurality of projectors is designated as a Direct View Projector (DVP) or a Secondary View Projector (SVP).