Video Display Correction for Off-Axis Rectangular Viewing
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Solution Overview
Problem
Viewing a video display from an off-axis angle results in a distorted aspect ratio and impaired 3D effects, as the image is not optimized for the viewer's location, leading to a suboptimal viewing experience.
Innovation Solution
A device that receives video data and adjusts the aspect ratio in real-time based on the viewer's off-axis angle, using correction logic to transform the rectangular aspect ratio into a non-rectangular aspect ratio, ensuring an optimal on-axis view from any angle without physical reorientation of the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display is viewed from an off-axis angle, then the viewer can see the display from a location not perpendicular to the display surface, but the aspect ratio becomes distorted and 3D effects are impaired
Solution Approach 1:
The system performs preliminary action by pre-calculating and applying geometric correction to the video signal before display. The correction logic determines the appropriate non-rectangular aspect ratio based on the detected off-axis viewing angle, transforming the image in advance to compensate for the expected distortion. This allows the viewer to see a correct rectangular aspect ratio from an off-axis position without needing to physically adjust the display orientation.
2Adaptability or versatility
If the display is viewed from an off-axis angle, then the viewer can access the display from different positions, but the shapes in the displayed content become distorted
Solution Approach 1:
The system applies local quality by implementing spatially varying correction across different regions of the display. The correction logic adjusts the aspect ratio and geometric properties of video content based on the specific off-axis viewing angle detected, applying different transformation parameters to different portions of the image as needed. This ensures that shapes and content maintain their intended geometry specifically for the viewer's location while allowing viewing from multiple positions.
3Ease of operation
If the display is viewed from an off-axis angle, then the viewer can watch from a non-perpendicular position, but the 3D effects and depth perception are reduced
Solution Approach 1:
The system performs preliminary action by pre-compensating for 3D effect degradation through geometric correction. Before displaying the video content, the correction logic applies transformations based on the detected off-axis viewing angle to maintain proper perspective relationships. This preliminary geometric adjustment ensures that depth cues and 3D effects remain effective even when the viewer is positioned at an angle to the display surface.
Data Source
AI summary
Embodiments describe methods, apparatus and systems to provide video display correction to provide an on-axis view at an off-axis angle so that the display surface displays a rectangular video image. For instance, a device may receive a stream of video data to be displayed on a display surface of a display, the video data having a first rectangular aspect ratio to be viewed from an on-axis location with respect to the display surface. The device may also receive a user selection of an off-axis viewing angle with respect to the display surface. The device may then correct the first rectangular aspect ratio to a second, non-rectangular aspect ratio based on the off-axis viewing angle, so that from the off-axis angle, the display surface appears to display a rectangular video image. Other embodiments are also described and claimed.