一种多参数可控的随机复合半色调算法  

Random and Hybrid Halftoning Algorithm with Multiple Controllable Parameter

作　　者：周啸[1] 史瑞芝[1] 吕建红 黎达[1] 姚诚勤 安敬 

机构地区：[1]信息工程大学 [2]61175部队

出　　处：《测绘科学技术学报》2015年第2期212-216,共5页Journal of Geomatics Science and Technology

摘　　要：此处提出了一种融合AM算法和FM算法优势、避免二者劣势的多参数可控随机复合半色调算法。该算法在避免莫尔条纹的同时降低了印刷复制难度,采用通用模板实现加网,节省了工作量。首先对加网角度模型、网点百分率以及网点排列模型进行了解析,提出了算法建模思想。通过设计通用模板或阈值矩阵以及构建网点单元精确定位算法,具体阐述了文中所提算法的建立过程。利用文中所提算法设计实验,对分色图像进行半色调化和叠印模拟。实验证明,文中所提算法是一种多项指标优于传统AM算法和FM算法的半色调方法。A random and hybrid halftoning algorithm with multiple controllable parameter which combines AM screening and FM screening＇s advantages while avoids theirs＇disadvantages was brought forward. It could avoid moiré and reduce printing difficulty. It applied a universal template to realize screening, which would save workload. Firstly, the screen angle model, percentage dot area and dot arrangement model were analyzed, and then the modeling thought was brought forward. By designing universal templates or threshold matrix and setting up dot unit location algorithm, the specific process to set up the algorithm was elaborated. The algorithm was used to design experiment, in which simulate halftoning was performed on color separation images and simulate overprinting was performed on them. The experiment proves that this algorithm is superior to traditional AM screening algorithm and FM screening algorithm on multiple indexes.

关 键 词：多参数可控 随机复合半色调 通用模板 通用阈值矩阵 网点定位 

分 类 号：P288[天文地球—地图制图学与地理信息工程]