Image Processing Unit for Stereoscopic Display Jagging Reduction
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Solution Overview
Problem
Patterned retarder type stereoscopic image displays experience jagging artifacts due to incomplete image data on odd and even numbered lines, leading to a non-smooth boundary in 3D images.
Innovation Solution
An image processing unit that compares pixel data of left and right eye images, calculates differences, and modulates pixel data using specific coefficients to rearrange 3D image data, preventing jagging by estimating and addressing probable jagging regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the patterned retarder type stereoscopic image display displays left eye image on odd-numbered lines and right eye image on even-numbered lines, then the stereoscopic image can be implemented with high stereoscopic effect, but the boundary portion of the 3D image becomes non-smooth and exhibits jagging artifact
Solution Approach 1:
The patent applies preliminary action by performing data modulation on pixel values before displaying the stereoscopic image. The image processing unit modulates pixel data for odd-numbered lines (left eye image) and even-numbered lines (right eye image) in advance, using coefficient groups to adjust boundary regions. This pre-modulation prevents jagging artifacts from occurring during image display, while maintaining the line-separated stereoscopic format that provides high stereoscopic effect.
2Reliability
If the display uses complete image data for both left and right eyes on all lines, then the image would be complete, but the patterned retarder method intentionally uses incomplete data (left eye only on odd lines, right eye only on even lines) to achieve stereoscopic effect
Solution Approach 1:
The patent applies local quality by differentiating the treatment of different line regions. Odd-numbered lines receive modulation based on left eye image data while even-numbered lines receive modulation based on right eye image data. The coefficient groups are selectively applied to specific line types, allowing each region to be optimized for its specific purpose (left eye or right eye display) while maintaining overall image quality and preventing jagging artifacts.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents jagging in stereoscopic image displays by modulating pixel data within the image processing unit, ensuring a smoother 3D image presentation by addressing the incomplete data issue on odd and even numbered lines.
Implementation Method 1
The patterned retarder type stereoscopic image display displays a left eye image on odd-numbered lines of the display panel DIS and displays a right eye image on even-numbered lines of the display panel DIS. The left eye image passes through the patterned retarder PR and thus is converted into left-circularly polarized light. The right eye image passes through the patterned retarder PR and thus is converted into right-circularly polarized light.
Data Source
AI summary
An image processing unit, a stereoscopic image display using the same, and an image processing method are disclosed. The image processing unit includes a data modulation unit, that receives 3D image data including left eye image data and right eye image data, compares a pixel data of the left eye image and a pixel data of the right eye image corresponding to the same coordinate of the previously set mask with each other, calculates the number of cases where a difference between the same pixel data of the left eye image data and the right eye image data is equal to or greater than a predetermined threshold value, and modulates the pixel data of the left eye image and the pixel data of the right eye image inside the mask using a first coefficient group of the mask when the number of cases is greater than a predetermined value.