Head-Mounted Display Foreground Background Rendering
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Solution Overview
Problem
Conventional head-mounted displays require user-specific calibration to correct misalignment, which can cause double vision and eyestrain, and existing methods do not effectively manage the focus of foreground and background objects in a unified field of view.
Innovation Solution
A method and system where objects in an image are classified into foreground and background sets, with corresponding display images rendered for each eye, allowing the brain to interpolate and focus on foreground objects while maintaining background objects in focus or out of focus, thereby reducing calibration constraints and improving user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If user-specific calibration is performed to correct misalignment, then image alignment accuracy is improved, but device complexity and ease of operation deteriorate due to required calibration procedures
Solution Approach 1:
The patent divides the display system into separate left and right eye displays, each independently rendering images for their respective eyes. This segmentation allows each eye's display to be optimized independently, reducing the need for precise inter-eye calibration while maintaining overall image alignment accuracy
Solution Approach 2:
The patent applies different focus qualities to different depth planes within each eye's display. Foreground objects are rendered in focus while background objects are rendered out of focus, creating local quality variations that enhance depth perception without requiring global calibration adjustments
2Reliability
If separate focus rendering is applied to foreground and background objects, then depth perception is improved, but image rendering complexity increases
Solution Approach 1:
The patent segments objects in the scene into foreground and background sets, assigning different focus rendering treatments to each set. This segmentation enables the rendering system to apply appropriate focus levels to different depth planes, improving depth perception while managing complexity through systematic object classification
Solution Approach 2:
The patent implements dynamic focus rendering where the focus state of objects changes based on their depth classification. Foreground objects maintain sharp focus while background objects are dynamically blurred, creating a dynamic depth effect that enhances realism without requiring complex manual adjustments
3Manufacturing precision
If misalignment occurs in x-direction or y-direction, then display accuracy deteriorates, but calibration time increases
Solution Approach 1:
By treating left and right eye displays as independent segmented systems, the patent reduces the calibration burden. Each eye's display can be independently optimized without requiring extensive inter-eye alignment procedures, thereby reducing calibration time while maintaining display accuracy
Data Source
AI summary
Disclosed are embodiments for methods and devices for displaying images. In some example embodiments, methods may include receiving data corresponding to an image. The image data may include at least one image object. Each image object may be assigned to either a foreground image set or a background image set. An embodiment may also include rendering a first display image based on at least the foreground image set. The first display image may include the objects assigned to the foreground image set. Additionally, the objects assigned to the foreground image set may be in focus in the first display image. Embodiments may also include rendering a second display image based on at least the background image set. The second display image may include the objects assigned to the background image set. Additionally, the objects assigned to the background image set may be in focus in the second display image.