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Generating stochastic dispersed and periodic clustered textures using a composite hybrid screen
1Xerox Corporation, Webster, NY 14580, USA. guoyau.lin@xerox.com
Summary
This study introduces a novel composite screen architecture for electrophotographic printing to enhance image quality. The new design, utilizing multiple microscreens and macroscreens, effectively reduces artifacts and improves gray level rendition for smoother prints.
Area of Science:
- Image processing
- Printing technology
- Computer graphics
Background:
- Electrophotographic printing requires high-frequency halftone patterns for smooth results and detail.
- High frequencies limit gray levels, causing contouring and posterization.
- Traditional methods using Bayer screens or stochastic screens introduce artifacts.
Purpose of the Study:
- To propose a new composite screen architecture for electrophotographic printing.
- To address artifacts and improve gray level rendition in highlights and shadows.
- To leverage multiple microscreens and macroscreens for enhanced image quality.
Main Methods:
- Developed a composite screen architecture with multiple microscreens and macroscreens.
- Applied the direct binary search (DBS) algorithm for joint screen design.
- Targeted artifact reduction in highlights and shadows.
Main Results:
- The proposed composite screen architecture effectively minimizes visible artifacts.
- Improved gray level rendition compared to traditional methods.
- Achieved smoother and more stable halftone patterns.
Conclusions:
- The novel composite screen architecture offers a superior solution for electrophotographic printing.
- Joint design using DBS algorithm optimizes screen performance.
- This approach enhances overall image quality by reducing artifacts.
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