Stereo Image Offset Calibration for Display Adaptability
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Solution Overview
Problem
Single lens stereo projection systems cannot adjust the convergence point of stereo images, leading to viewer discomfort due to misalignment when image content is displayed on different screen sizes, causing eye strain or fatigue.
Innovation Solution
A system and method that determines an adjustment factor to calibrate the offset between left and right eye images based on characterization data specific to the display environment, allowing for dynamic adjustment of the convergence point to match the intended perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If stereo image content is displayed on a smaller or larger screen, then the image can be adapted to different display environments, but the perceived distance of objects in the scene is affected due to increased or decreased image pair alignment, causing viewer discomfort
Solution Approach 1:
The patent applies dynamics by making the stereo image offset adjustable and adaptable to different display environments. The system dynamically determines an adjusted offset based on the actual display environment characteristics, allowing the stereo image alignment to change adaptively rather than remaining fixed. This resolves the contradiction by enabling display environment adaptability while preventing viewer discomfort through environment-specific optimization.
Solution Approach 2:
The patent changes the offset parameter between left and right eye images based on display environment characteristics. By determining an adjusted offset that accounts for the specific display size and viewing conditions, the system modifies the stereo image alignment parameter to maintain proper convergence depth across different display environments, thereby adapting to various screens while preventing viewer discomfort.
2Area of stationary object
If the offset between stereo image pairs is increased or decreased to fit different screen sizes, then the image can be scaled to various display surfaces, but the convergence point shifts, causing eye strain or eye fatigue
Solution Approach 1:
The patent applies parameter changes by adjusting the offset between stereo image pairs based on the actual display surface size and characteristics. The system determines an environment-specific offset that compensates for scaling effects, ensuring the convergence point remains at the intended depth regardless of display surface area. This prevents eye strain by maintaining proper stereo alignment across different screen sizes.
Solution Approach 2:
The patent implements feedback by characterizing the display environment and using that information to determine the appropriate offset adjustment. The system receives characterization data about the display surface, processes this feedback information, and adjusts the stereo image offset accordingly to maintain correct convergence depth, thereby preventing eye strain while adapting to various display areas.
3Measurement precision
If manual alignment is used to control convergence point in two projector systems, then the convergence can be precisely controlled, but the system complexity increases and adjustment is impossible with single lens systems
Solution Approach 1:
The patent replaces the mechanical manual alignment system with an automated computational approach. Instead of requiring physical manual adjustment of projector alignment, the system uses a display processor to automatically determine and apply the appropriate offset based on characterized display environment data. This substitution maintains convergence point control precision while eliminating the complexity of manual mechanical adjustment systems and enabling compatibility with single lens architectures.
Solution Approach 2:
The patent introduces an intermediary computational layer (the display processor and offset determination logic) that mediates between the stereo image content and the display output. This intermediary automatically calculates the appropriate alignment adjustments based on display environment characteristics, replacing the need for direct manual mechanical alignment while preserving precise convergence control and enabling single lens system compatibility.
Data Source
AI summary
A system and method for characterizing and adjusting an offset between displayed stereo image pairs allows for calibration of the stereo image content for each display environment. The stereo image content is typically authored assuming a particular display image size. When the stereo image content is displayed in a display environment that does not conform to the particular display image size the offset between displayed stereo image pairs is increased or decreased, resulting in a viewing experience that is different than intended. In some cases, the viewer may experience discomfort due to eye strain or eye fatigue. Adjusting the offset during the playback of the stereo image content may improve the viewer experience.