Transparent Display Image Processing for Stereoscopic Visibility
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Solution Overview
Problem
Transparent display apparatuses face challenges in achieving high image quality and transparency due to reduced contrast ratio and color saturation caused by external light, which hinders the stereoscopic effect and user experience.
Innovation Solution
A method and apparatus that selectively apply stereoscopic effects to images by dividing them into objects based on depth, assigning processing levels, and controlling light shielding rates to adjust the visibility and depth perception, using a transparent display unit, light shielding unit, and processing unit to enhance the stereoscopic effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polarizing plates and back-light units are used in LCD-based transparent display, then display function is achieved, but transmittance rate is significantly reduced and transparency is degraded
Solution Approach 1:
The patent removes the back-light unit from the display system, extracting the harmful light source that caused transparency degradation. The display function is maintained through alternative lighting approaches that do not compromise the transparent substrate's optical properties.
Solution Approach 2:
The patent applies different optical properties to different regions of the display. The transparent substrate maintains high transmittance in viewing areas, while selective regions can modulate light transmission to achieve display functionality without uniformly compromising overall transparency.
2Illumination intensity
If external light transmission is allowed for transparency, then background visibility is improved, but image quality is degraded due to reduced contrast ratio and color saturation
Solution Approach 1:
The patent employs dynamic control of light transmission properties, allowing the display to adapt between transparent and opaque states. This dynamic adjustment enables the system to optimize both background visibility and image quality based on viewing conditions and content requirements.
Solution Approach 2:
The patent utilizes color modulation techniques to enhance image quality while maintaining transparency. By controlling the spectral characteristics of transmitted and emitted light, the system preserves color saturation and contrast ratio even when external light passes through the display.
3Manufacturing precision
If light shielding rate is increased to improve image visibility, then contrast ratio is improved, but transparency and stereoscopic effect are reduced
Solution Approach 1:
The patent divides the display into multiple independently controllable regions or layers with different light shielding rates. This segmentation allows simultaneous optimization of image visibility in display areas and transparency in viewing areas, resolving the contradiction between these two requirements.
Solution Approach 2:
The patent introduces intermediate optical elements or control layers that mediate between the displayed image and external light. These intermediaries selectively modulate light transmission to enhance image visibility without completely blocking external light, thereby preserving transparency and stereoscopic effects.
4Illumination intensity
If OLED is used instead of LCD to eliminate polarizing plates, then transparency is improved, but additional light shielding control mechanisms are required to maintain image quality
Solution Approach 1:
The patent leverages the self-emissive nature of OLED technology, where each pixel generates its own light. This self-service capability eliminates the need for external back-light units and complex light shielding mechanisms, simplifying the overall system while maintaining both transparency and image quality.
Data Source
AI summary
There are provided an image processing method. Perspective is calculated from an image, the image is divided into a plurality of objects in consideration of the perspective, and processing levels of the plurality of objects are assigned. A light shielding rate of a transparent display apparatus is calculated based on the processing levels. Further, image processing is performed on the objects on the basis of the processing levels, so that it is possible to improve a stereoscopic effect being felt while using the transparent display apparatus. Furthermore, a shielding rate of light entering from the rear side of the transparent display apparatus is effectively adjusted, and the image is processed to improve the visibility of the image.