Autostereoscopic Display Shifting Image Patterns for Resolution
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Solution Overview
Problem
Conventional autostereoscopic displays offer only half the available resolution in 3D and require complex electro-optical arrangements to support both 3D and 2D imaging, while also necessitating viewers to wear special glasses or use head tracking systems for proper image alignment.
Innovation Solution
A method and display system that generates complementary polarized images with alternating columns of left and right image pixels or sub-pixels, which are shifted based on the viewer's position using a parallel-strip barrier and tracking system, allowing for high-resolution 3D imaging without the need for special glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional autostereoscopic displays use mechanical lenticular displacement or controllable barrier to steer images to each eye, then 3D imaging is achieved, but the resolution is reduced to half of the available resolution
Solution Approach 1:
The patent implements dynamic image pattern shifting based on real-time tracking of viewer position. The controller adjusts the horizontal position of image patterns displayed on the screen according to the viewer's location, enabling the system to adapt to viewer movement while maintaining full resolution. This dynamic adjustment resolves the contradiction by allowing both high resolution and viewer freedom of movement.
Solution Approach 2:
The system employs a tracking system that continuously monitors viewer position and feeds this information back to the controller, which then adjusts the image pattern positioning accordingly. This feedback mechanism enables the display to automatically compensate for viewer movement, maintaining proper image alignment to each eye without requiring mechanical barriers or reducing resolution.
2Adaptability or versatility
If complex electro-optical arrangements are used to support both 3D and 2D imaging on the same display, then versatile imaging capability is achieved, but device complexity increases
Solution Approach 1:
The patent employs a single parallel-strip barrier structure that serves multiple functions: it enables both 3D and 2D imaging modes without requiring separate electro-optical arrangements. The barrier's alternating transparent and opaque strips can be configured to direct stereoscopic images to each eye or to function as a simple display mask for 2D images, providing versatility while maintaining system simplicity.
Solution Approach 2:
The system switches between 3D and 2D imaging modes by changing operational parameters rather than reconfiguring complex electro-optical arrangements. The controller adjusts image pattern generation and barrier positioning based on the desired mode, allowing the same hardware to perform multiple functions with minimal complexity.
3Manufacturing precision
If head tracking systems are used to actively deflect complementary images to each eye, then proper 3D image alignment is achieved, but the system requires specialized glasses or complex tracking mechanisms
Solution Approach 1:
The patent extracts and eliminates the need for mechanical lenticular displacement mechanisms and complex controllable barriers by using a simple parallel-strip barrier combined with dynamic image pattern shifting. This extraction of unnecessary complex components reduces device complexity while maintaining proper image alignment through software-controlled pattern positioning based on viewer tracking.
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
Enables high-resolution 3D imaging with viewer freedom of movement by shifting image patterns to ensure each eye receives the correct image, thereby eliminating the need for special glasses and improving resolution compared to conventional autostereoscopic displays.
Implementation Method 1
A first image having a pattern comprising alternating columns of N left-image pixels or sub-pixels and of N right-image pixels or sub-pixels is generated. A second image having a reversed pattern from the pattern of the first image is also generated. Alternating columns of the first and second images are blocked in alternating strips of a parallel-strip barrier.
Implementation Method 2
The patterns of the first and second images are shifted to the left or to the right, in relation to the strips of the barrier, by a number of image pixels or sub-pixels as a function of a position of a viewer of the stereoscopic image.
Data Source
AI summary
A method of generating stereoscopic images and an autostereoscopic system are introduced. Stereoscopic images are obtained by generating, on a screen, a first image having a pattern comprising alternating columns of N left-image pixels or sub-pixels and of N right-image pixels or sub-pixels and a second image having a reversed pattern from the pattern of the first image. A parallel-strip barrier has alternating strips for blocking alternating columns of the first and second images. A tracking system provides position information related to a viewer of the stereoscopic image. A controller shifts to the left or to the right, in relation to the strips of the barrier, the image columns by a number of image pixels or sub-pixels as a function of the position of the viewer.