Hybrid User Tracking Sensor for Autostereoscopic 3D Display
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Solution Overview
Problem
Conventional autostereoscopic 3D displays using lenticular lenses or variable parallax barriers restrict the 3D viewing area, causing distortion and poor image quality when the user moves, as they require a specific viewing distance and angle, limiting the flexibility and comfort of 3D image perception.
Innovation Solution
A display system that combines multiple cameras and sensors to track the user's location and posture, determining a final location for optimal 3D image rendering using subpixel rendering techniques with a lenticular lens or variable parallax barrier, allowing for wider viewing angles and improved image stability regardless of user movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lenticular lens or variable parallax barrier is used for autostereoscopic display, then 3D image can be displayed without glasses, but the viewing area is constrained and image quality deteriorates when user moves
Solution Approach 1:
The patent implements dynamic tracking of user eye position and head posture using cameras and sensors. The system continuously adjusts the displayed image based on real-time user location data, transitioning from a static viewing geometry to a dynamic one that adapts to user movements, thereby maintaining image quality while expanding viewing flexibility
Solution Approach 2:
The system employs feedback mechanisms where camera images and sensor data about user position and posture are continuously fed back to the display control unit. This feedback loop enables real-time adjustment of the 3D image rendering parameters to compensate for user movements, resolving the contradiction between viewing flexibility and image quality stability
2Adaptability or versatility
If the number of viewpoints is increased to widen viewing angle, then viewing angle increases, but the system complexity increases
Solution Approach 1:
The patent uses a single lenticular lens or variable parallax barrier structure that serves multiple functions: it provides the basic 3D display capability and simultaneously enables wide viewing angles through dynamic control. The system achieves multi-functionality by using one optical element while compensating for its limitations through software-based dynamic adjustment, thereby avoiding the need for multiple complex optical components
Data Source
AI summary
Example embodiments of a display system and method using a hybrid user tracking sensor are described. The display system may determine a final location of a user based on information of a face or eyes of a user generated based on information received from a plurality of cameras and posture information generated based on information received from a plurality of sensors.