Electronic Apparatus Image Processing Character Visibility
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Solution Overview
Problem
Electronic paper displays face challenges in maintaining high refresh rates while applying dithering, which can make fine characters difficult to read due to uniform application across the entire image.
Innovation Solution
An electronic apparatus and image processing method that extracts character areas, applies dithering only to non-character areas, and emphasizes characters through binarization or edge enhancement, improving visibility by generating a graphic image of characters and superimposing it on the original image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dithering is applied to the entire image, then the refresh rate can be increased, but the visibility of fine characters deteriorates
Solution Approach 1:
The image is segmented into character areas and non-character areas. Dithering is selectively applied only to non-character areas, while character areas undergo emphasizing processing (binarization or edge enhancement). This segmentation allows the system to maintain high refresh rate benefits from dithering while preserving character readability through targeted processing.
Solution Approach 2:
Different processing qualities are applied to different regions of the image. Character areas receive emphasizing processing with higher local quality (sharp edges, clear boundaries), while non-character areas receive standard dithering processing. This local differentiation resolves the contradiction by optimizing each region according to its specific requirements.
2Productivity
If dithering is evenly applied to the entire image, then the refresh rate is increased, but reading fine characters becomes difficult
Solution Approach 1:
The image is divided into character areas and non-character areas. The system extracts character regions and applies different processing to each region. Character areas undergo emphasizing processing to maintain readability, while non-character areas undergo dithering to enable higher refresh rates.
Solution Approach 2:
The patent applies local quality differentiation by making character areas have higher processing priority for emphasis and clarity, while non-character areas receive standard dithering treatment. This ensures that readability is optimized in character regions while overall refresh rate is improved through dithering in non-character regions.
Data Source
AI summary
An electronic apparatus includes a processor configured to execute area extraction processing of extracting a character area including a character in an image, processing of applying dithering to an area other than the character area in the image, and emphasizing processing of emphasizing the character in the character area.