Head-Mounted Display Color Correction via Component Overlay
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Solution Overview
Problem
In see-through head-mounted displays, users with varying color sensitivities face challenges in perceiving correct colors when directly viewing scenery due to the need for alignment of virtual and real images, which can be obstructed or misaligned, leading to incorrect color perception.
Innovation Solution
A head-mounted display configuration that includes an imaging assembly, storage for color correction factors, a correction picture generator, and a special picture processor to enhance color components and overlay the correction picture with the source picture, ensuring correct color perception by adjusting brightness and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an immersive head-mounted display is used to amplify color components, then color perception accuracy is improved, but the user cannot easily get a sense of perspective and the visual field may be obstructed
Solution Approach 1:
The display system is segmented into two separate optical paths: a see-through path for direct viewing of real scenery and a projection path for displaying color-corrected images. This segmentation allows users to maintain natural perspective while receiving color correction assistance.
Solution Approach 2:
A semi-transparent display medium acts as an intermediary between the real world and the color-corrected image. This intermediary allows simultaneous viewing of both the real scenery and the enhanced image without complete immersion, preserving spatial awareness.
2Ease of operation
If a see-through head-mounted display is used to allow direct viewing of scenery, then the user can maintain perspective and visual field access, but color perception becomes incorrect due to mixing of picture and scenery colors
Solution Approach 1:
The system dynamically adjusts the brightness parameters of the displayed image based on color correction factors specific to each user's vision characteristics. By changing the brightness parameter of color components rather than their hue, the system maintains accurate color perception while preserving the see-through viewing experience.
Solution Approach 2:
Color correction is applied locally to specific color components (red, green, blue) rather than uniformly to the entire image. Each color component is adjusted according to the user's specific visual sensitivity deficits, providing targeted correction while maintaining natural appearance of correctly perceived colors.
3Measurement precision
If the brightness of each color component is amplified according to color vision properties, then users with lower sensitivity can perceive colors correctly, but the visual field may be obstructed and perspective sense is lost
Solution Approach 1:
The display system dynamically adjusts its opacity and brightness levels based on viewing conditions and user needs. The semi-transparent display allows variable transmission of both real-world light and enhanced image light, optimizing the balance between color correction effectiveness and visual field availability.
Data Source
AI summary
A head-mounted display (101) includes: an imaging assembly (203) imaging scenery seen by a user to generate a source picture; a storage unit (202) storing color correction factors used for correcting brightness of each of a red, green and blue color components included in a picture; a correction picture generator (212) performing color correction processing for enhancing a color component with a relatively low color correction factor stored in the storage unit (202), of the red, green and blue color components forming the source picture, to generate a correction picture; a picture display assembly (207) displaying the correction picture in the field of view of the user under a condition where he/she is able to perceive the outside world; and a special picture processor (213) performing picture processing for overlaying the correction picture and the source picture on each other for display.