Paper
16 January 2006 Frequency domain design of cluster dot screens
Mani Fischer, Doron Shaked
Author Affiliations +
Proceedings Volume 6058, Color Imaging XI: Processing, Hardcopy, and Applications; 60580U (2006) https://doi.org/10.1117/12.641903
Event: Electronic Imaging 2006, 2006, San Jose, California, United States
Abstract
Clustered dots screens are widely used in digital printing. Our research focuses on irregular cluster-dot screens. Irregular screens are appealing since there are many more irregular screens than regular ones. As a result, they provide a larger set of multi-separation screen combinations for avoiding interaction between screening frequencies of concurrent screens. Their down side is that they often have harmonic artifacts. Our design challenge is to reduce these artifacts' visual impact. We present frequency-domain based methods to reduce these artifacts' visual impact. State-of-the-art screens incorporate many, predominantly spatial domain, design considerations which we cannot ignore. Accordingly, the proposed methods are designed to introduce minimal modifications to given screens. The proposed methods eliminate, or reduce the few artifacts visible in a set of irregular screens. This work can be generalized to other printing technologies, and to screen design.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mani Fischer and Doron Shaked "Frequency domain design of cluster dot screens", Proc. SPIE 6058, Color Imaging XI: Processing, Hardcopy, and Applications, 60580U (16 January 2006); https://doi.org/10.1117/12.641903
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KEYWORDS
Visualization

Printing

Halftones

Astatine

Convolution

Inspection

Photography

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