AR Display System Resolving Vergence-Accommodation Conflict
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Solution Overview
Problem
Current augmented reality and virtual reality technologies fail to provide a comfortable and natural three-dimensional experience due to mismatched vergence and accommodation, leading to user discomfort such as eye fatigue and headaches, as they do not effectively replicate the human visual system's complex interactions with the environment.
Innovation Solution
An augmented reality display system that includes an image capturing device and a processor to capture and analyze images, identify map points, and generate sparse and dense point descriptors, allowing for the normalization and recognition of user gestures and movements to dynamically render virtual content in a manner that aligns with the user's head and eye motions, thereby enhancing the depth perception and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If stereoscopic wearable glasses are used to display images with slightly different element presentation, then a three-dimensional perspective is perceived by the human visual system, but user discomfort occurs due to mismatch between vergence and accommodation
Solution Approach 1:
The patent changes the fundamental parameters of the display system by transitioning from stereoscopic 3D to photorealistic virtual reality with dynamic foveated rendering. This involves adjusting resolution allocation based on eye movement patterns, focal length, and vergence-accommodation relationships to eliminate the harmful mismatch while maintaining depth perception through realistic optical simulation
Solution Approach 2:
The patent replaces the mechanical stereoscopic mechanism (separate left and right eye images) with a photorealistic rendering system that simulates natural human vision. This substitution uses eye tracking data and optical models to dynamically adjust image rendering, replacing the rigid stereoscopic approach with a flexible, biology-inspired system that eliminates vergence-accommodation conflict
2Ease of operation
If photorealistic virtual reality is implemented with eye movement tracking, then user comfort and immersion are improved, but system complexity and processing requirements increase
Solution Approach 1:
The patent applies local quality by implementing dynamic foveated rendering that allocates high resolution only to the foveal region (center of gaze) while using lower resolution for peripheral areas. This localized quality adjustment reduces overall processing requirements while maintaining perceived visual fidelity, as the human visual system is most sensitive to details in the foveal region
Solution Approach 2:
The patent implements dynamics through real-time adjustment of rendering parameters based on eye movement patterns, focal length changes, and head position. The system continuously updates the rendered image to match the user's current visual state, creating a dynamic adaptation that improves comfort while optimizing processing efficiency by only rendering high-detail content where needed
Data Source
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AI summary
Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. A method for updating a virtual world is disclosed, comprising: receiving a first input from a first device of a first user, the first input corresponding to a physical environment of the first user; updating a virtual world model based on the received first input, the virtual world model corresponding to the physical environment of the first user; and transmitting first updated information corresponding to a first portion of the virtual world model to a second user, wherein the first updated information indicates whether any portion of the first updated information needs to be displayed to the second user.