Image Display Compensation for Lateral Viewing Distortion
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Solution Overview
Problem
Flat and non-flat display devices often exhibit image deformation when viewed laterally or from distorted angles, leading to a degraded display effect due to the image being perceived as trapezoidal or distorted.
Innovation Solution
An image displaying method that divides the image into sub-images along a reference direction, calculates a compensation ratio based on viewpoint position, sight line angle, and display device parameters, and compensates each sub-image accordingly to maintain uniform size when viewed, thereby preventing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the display device is viewed from a lateral side or is distorted, then the image appears deformed or trapezoidal, but the display effect is degraded
Solution Approach 1:
The image is divided into multiple sub-images along a reference direction, with each sub-image assigned a specific compensation ratio. This segmentation allows different portions of the image to be adjusted independently based on their position and the viewing angle, enabling precise correction of geometric distortion while maintaining overall image integrity
Solution Approach 2:
Different compensation ratios are applied to different sub-images based on their local position relative to the viewing angle. The compensation ratio for each sub-image is calculated according to its specific location and the angle between the sight line and the reference direction, ensuring that each region is corrected according to its local distortion characteristics
2Shape
If the image is displayed on a flat display device viewed laterally, then the image appears as a trapezoidal compressed image, but the display effect is degraded
Solution Approach 1:
The image compensation is performed in advance before display, by calculating compensation ratios for each sub-image based on the expected viewing angle and device orientation. This preliminary correction ensures that when the image is viewed laterally, the pre-applied compensation counteracts the expected geometric distortion, maintaining proper image shape
Solution Approach 2:
The compensation ratio parameter is dynamically determined based on the angle between the sight line and the reference direction, as well as the position of each sub-image. By changing this parameter according to viewing conditions, the system adapts the image geometry to compensate for lateral viewing distortion
3Shape
If the image is displayed on a non-flat display device adhered to a curved wall, then the image appears distorted at any view angle, but the display effect is degraded
Solution Approach 1:
The image is segmented into multiple sub-images that can be independently compensated. This allows the system to handle the complex distortion patterns introduced by curved surfaces, as each sub-image can be adjusted according to its specific position on the curved display and the local viewing angle
Solution Approach 2:
Different compensation strategies are applied to different regions of the image based on their local position on the curved display device. The compensation ratio for each sub-image is calculated considering its specific location and orientation relative to the viewing direction, enabling precise correction of distortion caused by the curved geometry
Data Source
AI summary
An image displaying method including: obtaining an image to be displayed, dividing equally the image into a plurality of first sub-images along a first reference direction, and then obtaining position information of a view point relative to the display device, an angle of sight line and parameter information of a first virtual section line segment of the display device, and then calculating a compensation ratio along the first reference direction for each first sub-image of the image, and then compensating each first sub-image along the first reference direction according to the compensation ratio, and displaying the image on the display device, so that the compensated first sub-images are viewed at the view point as having the same size along the first reference direction.