Image Processing for Display Devices to Restore Edge Sharpness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-resolution liquid crystal display devices face issues with displaying low-resolution image signals, resulting in image blurring at edges due to gradual grayscale changes and decreased gradient values, which affects display quality.
Innovation Solution
An image processing method that sets a pixel as the center and surrounding pixels as references, calculates brightness relation values using a specific formula, and adjusts the brightness of the center pixel based on these values to enhance image contours and clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If low-resolution image signals are displayed on high-resolution liquid crystal display devices, then the display resolution is improved, but image blurring occurs at edges due to gradual grayscale changes and decreased gradient values
Solution Approach 1:
The patent applies different processing strategies to different regions of the image based on local characteristics. It identifies edge regions versus non-edge regions and applies selective enhancement only where needed (at edges), preserving overall image quality while specifically addressing the blurring problem at boundaries between different grayscale regions
Solution Approach 2:
The patent modifies the brightness parameter of pixels at image edges by adjusting their grayscale values. It calculates adjusted brightness values based on the difference between center pixel brightness and average surrounding pixel brightness, then applies clamping and offset operations to enhance edge contrast and restore gradient values at image boundaries
Data Source
AI summary
An image processing method for a display device is provided. The method includes steps of: setting one of the multiple pixels arranged as a matrix of the image to be processed as a pixel to be processed, and using the pixel to be processed as a center and setting remaining pixels as reference pixels; obtaining a maximum brightness value and a minimum brightness value of the brightness of the pixel to be processed and the brightness of each reference pixel; determining a relationship of the brightness relation value between the pixel to be processed and the reference pixels and a preset reference value; when the brightness relation value is greater than the preset reference value, setting the brightness of the pixel to be processed as the maximum brightness value, otherwise setting the brightness of the pixel to be processed as the minimum brightness value.