Wearable Display Depth Calculation for Visual Fatigue Reduction
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Solution Overview
Problem
Current head-mounted displays in virtual reality (VR) systems fail to provide an immersive experience due to the limitations of 2D panoramic multimedia and incorrect parallax when users turn their heads, leading to visual fatigue and vertigo.
Innovation Solution
A method for a wearable electronic device that processes initial media files from stereo cameras to calculate and output media files representing images at different locations, ensuring correct depth information and reducing visual convergence conflicts by adjusting display area definitions based on depth of field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If panoramic multimedia is used in head-mounted displays, then users can view 360-degree scenes, but the 2D nature of the content reduces immersive experience and creates visual fatigue
Solution Approach 1:
The patent transitions from 2D panoramic images to 3D volumetric representations by introducing depth information. The system captures images at multiple depths using light field cameras or stacked image sensors, then reconstructs the scene as a 3D light field that can be viewed from different angles and depths, adding the depth dimension to traditional panoramic viewing.
Solution Approach 2:
The system dynamically adjusts the displayed view based on real-time head tracking data. As users move their heads, the system recalculates and renders the appropriate perspective from the captured light field, providing dynamic parallax effects that match natural human vision and maintain immersive experience throughout head movements.
2Measurement precision
If stereo cameras are used to capture 3D panoramic content, then parallax effect is achieved, but fixed camera locations cause incorrect parallax when users turn their heads
Solution Approach 1:
The system pre-captures light field data at multiple discrete depth positions before viewing. By capturing images from multiple camera positions or using stacked sensors to record rays from different depths, the system prepares a comprehensive set of perspective data in advance that can accommodate various head positions and viewing angles during playback.
Solution Approach 2:
The patent introduces a light field reconstruction algorithm as an intermediary between the captured images and the final display. This algorithm processes the multi-depth image data and generates synthesized views for any arbitrary viewpoint, acting as a mediator that translates fixed-camera captures into dynamic, head-movement-compatible displays with correct parallax.
3Measurement precision
If 3D panoramic content is displayed to both eyes, then depth perception is improved, but visual convergence conflicts cause vertigo and discomfort
Solution Approach 1:
The system applies different processing and rendering quality to different regions of the visual field. The foveal region (center of gaze) receives high-fidelity 3D rendering with accurate depth cues, while peripheral regions use lower resolution or simplified depth representation. This local differentiation reduces the overall computational load and minimizes convergence conflicts in areas where fine depth discrimination is less critical.
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
Enhances the immersive experience by providing accurate 3D visuals and reducing visual fatigue and vertigo through correct depth information and adjusted display settings, ensuring consistent focus and convergence adjustments.
Implementation Method 1
a three-dimensional (3D) effect is generated by using a parallax, and the parallax is generated by a small difference in location when a stereo camera photographs a same scene
Data Source
AI summary
The various embodiments described herein include an information processing method performed by a wearable electronic device. The wearable electronic device obtains a first initial media file and a second initial media file for a target area. The first initial media file includes a first image acquired based on a first location of the target area. The second initial media file includes a second image acquired based on a second location of the target area. Based on the initial files, the wearable electronic device determines depth information of each target point in the target area. Next, the wearable electronic device selects a first media file from the first and second initial media files, and calculates a second media file. The wearable electronic device then outputs the first and second media files to, respectively, a first output unit and a second output unit of the wearable electronic device.