IEEE Trans Image Process. 2017 Sep;26(9):4404-4413. doi: 10.1109/TIP.2017.2713939. Epub 2017 Jun 8.
Halftoning is a key stage of any printing image processing pipeline. With colorant-channel approaches, a key challenge for matrix-based halftoning is the co-optimization of the matrices used for individual colorants, which becomes increasingly complex and over-constrained as the number of colorants increases. Both choices of screen angles (in clustered-dot cases) or structures, and control over how individual matrices relate to each other and result in over-versus side-by-side printing of the colorants, impose challenging restrictions. The solution presented in this paper relies on the benefits of a halftone area Neugebauer separation pipeline, where local Neugebauer Primary use is specified at each pixel and where halftoning can be performed using a single matrix, regardless of the number of colorants. The provably complete plane dependence of the resulting halftones will be presented among the solution's benefits.
半调处理是任何打印图像处理管道的关键阶段。对于色料通道方法，基于矩阵的半调处理的一个关键挑战是对用于各个色料的矩阵进行协同优化，随着色料数量的增加，这变得越来越复杂和过度约束。屏幕角度（在聚类点情况下）或结构的选择，以及控制各个矩阵之间的关系以及如何导致色料的交错打印而不是并排打印，都施加了具有挑战性的限制。本文提出的解决方案依赖于半调区域 Neugebauer 分离管道的优势，在该管道中，在每个像素处指定局部 Neugebauer 原色的使用，并且可以使用单个矩阵进行半调处理，而与色料的数量无关。所提出的解决方案的优势之一是，所得到的半调的可证明完全平面相关性。
