基于变频调幅的新型混合加网技术研究  

Research on a New Hybrid Screening Technology Based on Frequency Conversion Amplitude Modulation

作　　者：黄志坚[1] 唐万有[1] 

机构地区：[1]天津科技大学,天津300222

出　　处：《绿色包装》2016年第4期38-42,共5页Green Packaging

摘　　要：本文在分析调幅加网、调频加网以及典型混合加网的基本原理和技术特点的基础上,研究了基于变频调幅的新型混合加网技术。主要数据处理过程包括一阶调频加网、一阶调频网点的聚合、二阶调频加网。在图像中间调范围内采用二阶调频网点,网点尺寸可变、网点中心距随机;在图像的亮调和暗调范围内采用大小可控的一阶调频网点,网点尺寸可调,位置随机。充分结合调频和调幅加网的优点,有效提高阶调再现的质量。Abstract： Based on the analysis of the basic principle and technical characteristics of the amplitude modulation （AM） screening, frequency modulation （FM） screening and the typical hybrid screening, this paper studies a new type of hybrid screening technology based on frequency conversion amplitude modulation （FCAM） technology. The main data processing includes the first order frequency modulation screening, first order FM dot polymerization and second- order FM modulation screening, in the middle tone range of the image, where the dot size is variable and the center distance of the dot is random. In the bright and dark tonal range using the size of the first-order frequency modulation dot, dot size can be adjusted and the dot location is random. Fully combining the advantages of FM screening and AM screening so the image tone can be controlled better.

关 键 词：变频调幅 混合加网 二阶调频加网 

分 类 号：TS803.1[轻工技术与工程]