Optical See-Through Display Virtual Content Readability
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Solution Overview
Problem
Optical see-through augmented reality systems face challenges in displaying virtual content effectively due to background interference, where real-world objects can be perceived through or distort the virtual content, especially under varying environmental conditions, requiring significant processing power and costly peripherals to mitigate.
Innovation Solution
An Optical See-Through viewing device with a controller that captures and compares virtual and real-life object views, determines differences, and modifies virtual content to reduce background interference by adapting illumination, color, or field of view, ensuring clear perception of virtual content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If virtual content is displayed in optical see-through systems, then augmented reality functionality is provided, but background light causes the real world to bleed into the virtual content, distorting it and reducing readability
Solution Approach 1:
The system dynamically adjusts display parameters (brightness, contrast, color) of the virtual content based on detected background conditions. The controller modifies display parameters in response to detected background characteristics, changing the optical properties of the virtual content to maintain readability against varying background conditions.
Solution Approach 2:
The system uses a camera to capture the actual displayed virtual content and background, then feeds this information back to the controller which analyzes the composite image and adjusts display parameters accordingly. This closed-loop feedback mechanism continuously optimizes virtual content visibility by comparing the captured composite view with the intended virtual content.
2Measurement precision
If prior art solutions analyze and block disturbing background objects, then virtual content readability improves, but processing power requirements and device cost increase significantly
Solution Approach 1:
The system uses the device's own existing camera and display components to capture and analyze the composite view of virtual content and background. Rather than requiring external specialized peripherals, the system leverages its inherent capabilities to perform background analysis and virtual content adjustment, reducing additional hardware requirements.
Solution Approach 2:
The camera serves multiple functions: capturing the real world view, capturing the displayed virtual content, and analyzing the composite image to determine background characteristics. The controller performs multiple tasks including image processing, background analysis, and display parameter adjustment using the same hardware components, reducing the need for dedicated specialized peripherals.
Data Source
AI summary
An Optical See-Through viewing device (100) comprising a controller (101) configured to control a display arrangement (110) comprising an image capturing device (112), wherein the controller (101) is further configured to: a) display virtual content (DVC, 115) overlapping at least one real-life object (RLO) viewable by a user's eye (E) through the Optical See-Through viewing device (100); b) capture a composite view of displayed virtual content (DVC, 115) overlapping real life object (RLO); c) determine captured virtual content (CVC) based on composite view; d) determine a difference (D) between captured virtual content (CVC) and the displayed virtual content (DVC, 115); e) determine modified virtual content (MDVC) based on the difference (D); and f) display the modified virtual content (MDVC).