Multi-view Display Cyclic Mapping for View Jumping Control
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Solution Overview
Problem
Glasses-free 3D display systems face challenges such as dead zones and visual fatigue due to rapid changes in disparity, which hinder clear 3D image viewing and increase user discomfort.
Innovation Solution
A multi-view image display apparatus using a cyclic mapping method to expand the normal viewing area, adjust pixel values, and generate multi-view images based on depth information, ensuring a consistent view jumping amount and reducing disparity changes, thereby minimizing visual fatigue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a glasses-free 3D display system is used, then users can view 3D images without wearing glasses, but dead zones and visual fatigue occur due to rapid changes in disparity
Solution Approach 1:
The patent applies dynamic adjustment of view mapping strategies based on content characteristics. The system dynamically selects between cyclic mapping and linear mapping methods, and adjusts the normal viewing area expansion based on depth information and view jumping characteristics, thereby optimizing 3D viewing quality and reducing visual fatigue adaptively
Solution Approach 2:
The patent changes key parameters including the mapping method (cyclic vs. linear), the normal viewing area expansion factor, and the view jumping amount control. By adjusting these parameters based on content depth information and viewing conditions, the system resolves the contradiction between glasses-free convenience and visual comfort
2Area of stationary object
If the normal viewing area is expanded based on cyclic mapping, then the viewing area is enlarged, but view jumping occurs in the reverse viewing area
Solution Approach 1:
The patent applies different processing strategies to different regions of the display. The normal viewing area is expanded using cyclic mapping, while the reverse viewing area is specifically processed to control view jumping. This local differentiation resolves the contradiction by allowing area expansion without compromising viewing stability in critical regions
Solution Approach 2:
The system calculates and controls the view jumping amount based on depth information and mapping characteristics. By monitoring the view jumping in the reverse viewing area and adjusting the mapping parameters accordingly, the system maintains stability while preserving the expanded viewing area benefits
3Object-affected harmful factors
If pixel values are adjusted to equalize view jumping amount, then visual fatigue is reduced, but image processing complexity increases
Solution Approach 1:
The patent performs preliminary calculations of view jumping amounts and depth-based adjustments before final image rendering. By pre-computing the necessary pixel value adjustments based on depth information and mapping characteristics, the system reduces visual fatigue while managing processing complexity through efficient pre-processing
Solution Approach 2:
The system uses depth maps and epipolar images as intermediate representations to facilitate pixel value adjustment. These copied representations allow for efficient calculation and adjustment of view jumping without requiring complex direct manipulation of the final display image
Data Source
AI summary
A multi view image display apparatus and a control method thereof are provided. The display apparatus includes an image inputter configured to receive an image, a display configured to display a multi view image that is generated based on the received image, and a processor configured to render views having different viewpoints based on a depth of the received image, expand a normal viewing area based on a cyclic mapping, adjust pixel values of the views so that a view jumping amount of a view jumping area occurring on a reverse viewing area due to the expansion of the normal viewing area is equal to a value, and generate the multi view image based on the adjusted pixel values.