Oblique Filter Processing for 3D Display Moiré Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 3D display technologies using lenticular lens systems often produce moiré patterns and crosstalk due to high-frequency interference and tilt imaging methods, which degrade the display quality of three-dimensional images.
Innovation Solution
A display driving device and method that employs an oblique filter processing using a tilt lenticular lens layer and an oblique filter mask matrix with a corresponding tilt angle to generate a processed image frame, reducing moiré patterns and crosstalk by replacing original pixel data with new data through a high-pass or smoothing filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lenticular lens layer is used to create a 3D image, then a parallax effect is achieved, but a moiré pattern is generated due to high frequency interference
Solution Approach 1:
The patent applies oblique filter processing to the image data before it is displayed through the lenticular lens layer. This preliminary processing modifies the pixel data in advance to compensate for the moiré effect that will occur during 3D image display, thereby preventing the harmful moiré pattern from appearing in the final output
Solution Approach 2:
The patent changes the parameters of the image data by applying an oblique filter with specific mask matrices to modify pixel values. This parameter transformation alters the frequency characteristics of the image data to reduce high-frequency interference that causes moiré patterns while preserving the 3D parallax effect
2Object-affected harmful factors
If a tilt lenticular lens layer is used to reduce moiré patterns, then display quality improves, but crosstalk remains an issue
Solution Approach 1:
The patent applies different filtering operations to different regions of the image data based on local characteristics. The oblique filter processing is selectively applied to areas where moiré patterns are likely to occur, while preserving image quality in other regions, thereby addressing local quality issues without introducing widespread crosstalk
Solution Approach 2:
The oblique filter acts as an intermediary processing step between the original image data and the final display output. This intermediate processing layer modifies the data to reduce moiré patterns while maintaining image fidelity, serving as a mediator that prevents both moiré artifacts and crosstalk from appearing in the final 3D display
3Object-affected harmful factors
If original pixel data is replaced with new pixel data through oblique filter processing, then moiré patterns are reduced, but processing complexity increases
Solution Approach 1:
The patent segments the image processing into discrete pixel operations using predefined oblique filter mask matrices. By breaking down the complex filtering task into simple, repeatable pixel-level operations with fixed masks, the processing complexity is managed through segmentation into manageable computational units
Solution Approach 2:
The patent uses predefined oblique filter mask matrices that can be repeatedly applied to different regions of the image data. These standardized filter templates act as copies that can be efficiently replicated across the entire image, reducing processing complexity through reuse of the same filtering patterns rather than requiring unique processing for each pixel
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
Improves the display quality of 3D images by minimizing moiré patterns and crosstalk, enhancing the visual clarity of images, especially at edges between objects, through precise oblique filter processing and tilt lenticular lens configurations.
Implementation Method 1
the timing controller circuit is configured to perform oblique filter processing on an original image frame by an oblique filter with an oblique filter mask matrix to generate a processed image frame
Implementation Method 2
a straight (cylindrical) convex lens film (lenticular lens layer) is set on a display panel so that a parallax effect is created through a lens refraction angle
Data Source
AI summary
The disclosure provides a display driving device and an operation method thereof. The display driving device includes a timing controller circuit and a driving circuit. The timing controller circuit performs oblique filter processing on an original image frame by an oblique filter with an oblique filter mask matrix to generate a processed image frame. The oblique filter comprises an oblique high-pass filter or a smoothing filter. Original pixel data of a current pixel in the original image frame is replaced with new pixel data when the oblique filter mask matrix is configured for the current pixel. The driving circuit drives a display panel module according to the processed image frame. The display panel module includes a tilt lenticular lens layer having a first tilt angle. A second tilt angle of the oblique filter mask matrix of the oblique filter processing corresponds to the first tilt angle.