Separate Time-Warping for VR Headset and Controller
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Solution Overview
Problem
In virtual reality environments, performing time-warping for both the headset and controller independently is challenging due to their independent motion, leading to inaccurate pose information and poor VR performance when relying solely on updated headset pose data.
Innovation Solution
Implementing separate processing pipelines for the VR headset and controller, each with a graphics engine and electronic display stabilization engine to perform time-warping based on respective updated pose information, allowing for independent motion accommodation and accurate display of both the main scene and graphical overlays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate processing pipelines are implemented for VR headset and controller, then motion accuracy and display precision are improved, but device complexity increases
Solution Approach 1:
The patent divides the processing system into separate pipelines: a first processing pipeline for the VR headset that performs time-warping based on headset pose information, and a second processing pipeline for the controller that performs time-warping based on controller pose information. This segmentation allows each pipeline to independently handle its respective device's motion, improving pose accuracy without requiring a complete system redesign
Solution Approach 2:
The patent adds a temporal dimension to the processing by implementing time-warping operations. Instead of simply displaying frames as rendered, the system warps the display based on pose information received during or after rendering, effectively adding a time-based correction layer that improves motion accuracy
2Stability of the object's composition
If time-warping is performed based on updated pose information received during or after rendering, then display stability is improved, but processing time increases
Solution Approach 1:
The system performs time-warping operations using pose information that is received during or after the rendering process. By preparing the warped display in advance or concurrently with rendering completion, the system ensures that the corrected display is ready immediately when needed, minimizing additional processing delays
Solution Approach 2:
The patent implements asynchronous time-warping where the warping operation can proceed independently once pose information is available, rather than waiting for the complete rendering pipeline to finish. This allows the system to rush through the time-warping step as soon as necessary data is obtained, reducing overall processing time
Data Source
AI summary
An example technique may include performing a first time-warping of a scene of virtual reality content based on head pose information received during or after a rendering of the scene to obtain a time-warped scene, performing a second time-warping of an object based at least on object pose information received during or after a rendering of the object to obtain a time-warped object, and displaying on a display device a composite image based on the time-warped scene and the time-warped object.