Head-Mounted Display IPD Correction via Eye Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing VR head-mounted display devices struggle to provide a comfortable and immersive 3D experience due to variations in inter-pupillary distance (IPD) among users, which can change over time, leading to inconsistent and potentially distorted 3D scenarios.
Innovation Solution
A system that measures a user's IPD by obtaining user input through interfaces and optical components, correcting images displayed on the device to align with the user's IPD, ensuring proper alignment and convergence of images for each eye.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed IPD is used in the head-mounted display device, then the device structure is simple, but the 3D scenario becomes distorted for users with different IPDs
Solution Approach 1:
The system automatically measures the user's IPD by tracking eye movements through the optical components and displays, and automatically corrects the 3D scenario based on the measured IPD. This self-service approach eliminates the need for manual IPD input or adjustment, resolving the contradiction by making the system adaptable without requiring complex user interaction mechanisms
Solution Approach 2:
The system implements a feedback loop where the optical components continuously monitor the user's eye position and movements, the processor calculates the IPD based on this visual feedback, and the display dynamically adjusts the 3D scenario accordingly. This closed-loop feedback mechanism enables real-time IPD adaptation while maintaining manageable system complexity through software-based control
2Ease of operation
If manual IPD input is required, then measurement precision can be high, but ease of operation deteriorates
Solution Approach 1:
The system performs automatic IPD measurement through eye tracking without requiring manual user input. The optical components capture eye movement data, the processor calculates IPD from this data, and the system applies corrections automatically. This eliminates the need for users to manually enter or adjust IPD settings, simultaneously improving ease of operation while maintaining measurement precision through automated optical detection
Solution Approach 2:
The system replaces manual mechanical adjustment mechanisms with an optical-based measurement system. Instead of requiring users to physically adjust lenses or input values, the system uses optical components to detect eye positions and automatically computes the IPD, substituting a more sophisticated optical-electronic system for simpler mechanical interaction while achieving both ease of use and precision
3Reliability
If IPD changes over time are not accounted for, then device complexity remains low, but reliability of 3D experience deteriorates
Solution Approach 1:
The system transitions from a static, fixed IPD configuration to a dynamic IPD measurement and adjustment mechanism. The optical components continuously monitor eye movements, the processor dynamically recalculates IPD based on current eye positions, and the display real-time adjusts the 3D scenario parameters. This dynamic approach ensures consistent 3D experience reliability while accommodating temporal changes in user IPD
Solution Approach 2:
The system performs preliminary IPD measurement and correction setup before the user fully engages with the 3D content. By automatically measuring IPD and pre-configuring the appropriate corrections in advance, the system ensures reliable 3D experience from the start without requiring complex real-time adjustments during content consumption, thereby managing device complexity effectively
Data Source
AI summary
A display method, an electronic device, and a system for correcting display of images on a head-mounted display device are described. In a method, an electronic device may obtain an inter-pupillary distance (IPD) of a user based on user operations entered by the user based on user interfaces displayed on a head-mounted display device, correct a source image based on the IPD of the user to obtain target images used to be displayed on the head-mounted display device, and send the target images to the head-mounted display device. In this way, the user can comfortably and truly experience a 3D scenario when wearing the head-mounted display device.