Display Apparatus Selective Image Post-Processing for Text Readability
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Solution Overview
Problem
Display apparatuses face issues with artifacts such as blocking and ringing when restoring compressed image elements like GIF and JPEG images, which can degrade readability and definition, particularly for text elements during post-processing.
Innovation Solution
A display apparatus selectively applies image post-processing methods based on source information, classifying elements into groups such as video and text, and uses methods like detail enhancement, color enhancement, noise reduction, and artifact reduction to improve image quality without degrading text readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If image post-processing is applied to compressed image elements to reduce artifacts, then image quality is improved, but text readability and definition are degraded
Solution Approach 1:
The patent segments the content elements into different categories (image elements vs. text elements) and applies post-processing selectively to only the image elements. This is achieved by identifying the type of each content element and applying artifact reduction processing only to compressed image formats like JPEG and GIF, while excluding text elements from such processing, thereby resolving the contradiction between improving image quality and maintaining text readability
Solution Approach 2:
The patent applies different processing qualities and methods to different parts of the content based on their type. Image elements receive artifact reduction processing to improve their quality, while text elements are excluded from such processing to preserve their readability. This local differentiation of processing quality resolves the contradiction by tailoring the processing approach to the specific requirements of each content type
2Manufacturing precision
If selective post-processing is applied to different content elements, then both image quality and text readability are improved, but processing complexity increases
Solution Approach 1:
The patent simplifies the selective processing complexity by segmenting content elements into predefined categories with clear processing rules. By classifying elements as either image-type (requiring artifact reduction) or text-type (requiring no artifact reduction), the system manages processing complexity through systematic categorization rather than complex individual analysis of each element
Solution Approach 2:
The patent manages processing complexity by changing the processing parameters based on element type identification. The system adjusts whether artifact reduction processing is applied by changing the processing enable/disable parameter according to the content element type, providing a simple mechanism to handle different processing requirements without increasing overall system complexity
Data Source
AI summary
A display apparatus for post-processing the image of the contents, an image post-processor and a method for post-processing the image of the contents are disclosed. The display apparatus includes a communicator which communicates with a server, a display which displays contents received from the server, and a controller which determines an image post-processing method for elements of the contents based on source information of the contents and predetermined condition information, renders the elements which are post-processed according to the determined image post-processing method, and controls the display to display the contents generated after the rendering. Accordingly, the display apparatus can selectively implement image post-processing for the elements of the contents.