3D Display Parallax Adjustment for Eyestrain Reduction
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Solution Overview
Problem
Existing 3D display technologies struggle to balance the stereoscopic effect with user comfort, as larger parallax values enhance depth perception but cause eyestrain, while reducing parallax to improve comfort diminishes the 3D effect.
Innovation Solution
A device and method that adjust the parallax parameter of 3D video content based on the current degree of user eyestrain, using image capturing and computer vision to determine eye features and dynamically adjust the parallax to reduce discomfort while maintaining a strong stereoscopic effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If larger parallax values are used to enhance depth perception, then the stereoscopic effect is improved, but user eyestrain increases
Solution Approach 1:
The patent implements dynamic adjustment of parallax values based on real-time detection of user eye features. The system continuously monitors eye movement, pupil size, and gaze direction, then adapts the parallax parameter accordingly. This transforms the static parallax setting into a dynamic variable that responds to user physiological states, resolving the contradiction between maintaining strong stereoscopic effect and preventing eyestrain
Solution Approach 2:
The system establishes a closed-loop feedback mechanism where eye feature detection results directly influence parallax adjustment. The detected eye features (such as pupil diameter, eye movement patterns, and gaze stability) serve as feedback signals that trigger automatic parallax modification. This feedback loop enables the system to maintain optimal balance between stereoscopic quality and viewing comfort without manual intervention
2Object-affected harmful factors
If parallax is reduced to improve user comfort, then eyestrain decreases, but the 3D effect is diminished
Solution Approach 1:
The patent employs parameter change strategy by adjusting parallax values within an optimized range based on detected eye features. Rather than simply reducing parallax to eliminate eyestrain, the system dynamically modifies the parallax parameter to maintain it within an optimal band that preserves sufficient stereoscopic effect while preventing discomfort. This selective parameter adjustment resolves the contradiction by finding the optimal operating point rather than extreme reduction
3Ease of operation
If dynamic adjustment of parallax is implemented, then viewing comfort is optimized, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into a unified system where the display device simultaneously performs content rendering, eye feature detection, parallax calculation, and adaptive adjustment. The display screen serves both as the visual output medium and as the sensing interface for capturing eye images. This multi-functionality approach reduces overall system complexity by eliminating separate dedicated components for each function
Solution Approach 2:
The system implements self-service through automatic parallax adjustment without requiring manual user input or external control. The display device autonomously detects eye features, determines appropriate parallax values, and applies adjustments in real-time. This self-service capability simplifies the user interface and reduces the need for complex manual control mechanisms, offsetting the complexity introduced by the automated adjustment system
Data Source
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AI summary
Provided is a device including a camera configured to capture an image of eyes of a user who is watching three-dimensional (3D) video; and a processor configured to obtain an eye feature of the user from the captured image of the eyes of the user, determine a degree of eyestrain degree of the user based on the obtained eye feature, and adjust a parallax of the 3D video according to the degree of eyestrain of the user.