Autostereoscopic Display Gaze Tracking for Viewing Angle and Resolution
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Solution Overview
Problem
Autostereoscopic 3D displays face a challenge in providing a wide viewing area while maintaining image resolution, as increasing the number of viewpoints narrows the stereoscopic viewing angle and reduces image quality.
Innovation Solution
An image processing apparatus that estimates user gaze movement to dynamically adjust the output order of view images, allowing for a variable number of view images to be displayed based on the movement angle, thereby maintaining image quality and expanding the viewing angle without inversion phenomena.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of viewpoints is increased to achieve wide viewing area, then the viewing angle is widened, but the resolution of the displayed image is reduced
Solution Approach 1:
The patent applies dynamics by making the display system adaptive to user gaze movement. The display dynamically adjusts which viewpoints are presented based on real-time detection of user eye position and movement direction, transforming a static multi-view display into a dynamic system that optimizes image quality for the current viewing condition while maintaining wide viewing area capability
Solution Approach 2:
The patent implements local quality by presenting different numbers of viewpoints in different spatial regions corresponding to user gaze direction. When the user looks left, more viewpoints are allocated to the left side; when looking right, more viewpoints are allocated to the right side. This ensures high resolution is maintained in the direction of user attention while preserving wide viewing area potential
2Adaptability or versatility
If the number of viewpoints is increased to achieve wide viewing area, then the viewing angle is widened, but the stereoscopic effect quality deteriorates
Solution Approach 1:
The system dynamically adjusts viewpoint allocation based on detected gaze movement direction and angle. When the user moves their gaze to the left, the system increases the number of viewpoints allocated to the left eye; when gazing right, it increases viewpoints for the right eye. This dynamic adaptation maintains high-quality stereoscopic effects across wide viewing angles by ensuring sufficient viewpoint differentiation in the direction of user attention
3Adaptability or versatility
If gaze movement is tracked to adjust output order, then viewing angle is expanded, but system complexity increases
Solution Approach 1:
The patent replaces complex mechanical or optical systems with electronic image processing and software-based gaze tracking. Instead of physically reconfiguring displays or using complex optical switching mechanisms, the system uses digital signal processing to dynamically rearrange viewpoint sequences based on detected gaze direction, significantly reducing hardware complexity while achieving wide viewing angle adaptation
Data Source
AI summary
An apparatus and method for outputting view images by tracking a gaze of a user are provided. The image processing apparatus estimates movement of a gaze of a user using a camera, and determines an output order of view images according to the gaze movement.