Image Processing Device Reducing Jaggies in Delta-Arranged Displays
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Solution Overview
Problem
Existing image processing technologies face challenges in reducing jaggies in image contours, particularly in display devices using four colors with pixels arranged such that even and odd lines are shifted by half a pitch, which complicates accurate color reproduction and resolution enhancement.
Innovation Solution
An image processing device that converts three-color image data into four-color image data by performing interpolation processes based on sub-pixel positions, maintaining or adjusting the number of display pixels to improve positional accuracy and reduce jaggies, using techniques like linear and cubic interpolation to enhance resolution and aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If three-color image data is directly displayed on four-color display pixels, then color reproduction is simplified, but jaggies in image contours cannot be appropriately reduced and resolution is degraded
Solution Approach 1:
The patent segments the image processing into distinct functional blocks: color conversion section (converting three-color image data to first four-color image data), conversion section (performing interpolation to generate second four-color image data), and output section (outputting to display section). This segmentation allows each block to handle specific tasks optimally, achieving jaggie reduction through systematic interpolation while maintaining manageable processing complexity.
Solution Approach 2:
The patent introduces a new dimension of processing by performing interpolation not only in the horizontal direction but also considering the vertical shift between even and odd scan lines. The conversion section generates image data for positions corresponding to sub-pixel arrangements, effectively adding a dimensional layer of precision that addresses the half-pitch shift issue and reduces jaggies in contours.
2Measurement precision
If display pixels are arranged with even and odd lines shifted by half pitch (delta arrangement), then resolution is improved, but accurate color reproduction and jaggie reduction become more difficult
Solution Approach 1:
The patent applies local quality by treating even scan lines and odd scan lines differently in the conversion process. The conversion section performs interpolation specifically tailored to the half-pitch shift characteristic of each line type, generating appropriate image data for each local region's sub-pixel arrangement. This localized processing ensures accurate color reproduction while maintaining high resolution in the delta arrangement.
Solution Approach 2:
The patent changes parameters by introducing interpolation coefficients and weighting factors that account for the half-pitch shift. The conversion section adjusts the interpolation parameters based on the position within the delta arrangement, dynamically modifying processing parameters to achieve both high resolution and accurate color reproduction in the shifted pixel layout.
3Manufacturing precision
If interpolation process is performed to generate second four-color image data, then jaggies are reduced and resolution is improved, but processing time and computational load increase
Solution Approach 1:
The patent applies preliminary action by performing color conversion from three-color to four-color image data before the interpolation process. This preliminary conversion prepares the data in an optimal format, reducing the computational complexity of the subsequent interpolation. The color conversion section establishes the foundation for efficient interpolation, minimizing processing time while achieving smooth contour rendering.
Solution Approach 2:
The patent implements partial action by performing interpolation selectively - generating second four-color image data specifically for positions corresponding to sub-pixel arrangements in the delta configuration. Rather than processing all pixels uniformly, the conversion section focuses computational resources on the critical positions that affect contour smoothness, reducing overall processing time while maintaining image quality.
Data Source
AI summary
An image processing device outputs four-color image data to a display section, the display section performing display using display pixels each composed of four sub-pixels, and having an arrangement of the display pixels in which a pixel arrangement in an even line of a scan lines and a pixel arrangement in an odd line of the scan lines are shifted a half pitch of the display pixels from each other, and the image processing device includes a color conversion section which obtains three-color image data and converts the three-color image data into first four-color image data while maintaining the number of display pixels in the three-color image data, a conversion section which generates second four-color image data by performing an interpolation process on the first four-color image data based on a relationship between a position of a sub-pixel in the first four-color image data and a position of a sub-pixel in the display section, and an output section which outputs the second four-color image data to the display section.