数／模成像系统的图像质量评价  

Evaluation of Image Quality of Digital-Analog Imaging System

作　　者：王强[1] 杨根福[1] 汤学黎[2] 

机构地区：[1]杭州电子科技大学新闻出版学院,杭州310018 [2]北京北大方正电子有限公司,北京100085

出　　处：《中国印刷与包装研究》2009年第2期7-11,共5页China Printing Materials Market

摘　　要：数/模成像系统是一种集成数字成像与传统银盐照相成像系统优势,实现数字图像复制与模拟的最佳方法。优化数/模成像系统输出图像质量的关键是确保数字成像技术与银盐照相技术的适配。本文通过专门设计测试表中的密度梯尺、色标、刃边和正弦模版等质量元素,并采用微密度测量方法获得了不同银盐感光材料的调制传递函数、Wiener频谱和色域等系列图像质量参数,从而客观地评估数/模成像系统的调制传递特性、噪声和色彩复制效果。Digital-analog imaging system which integrated digital imaging and AgX photographic imaging system is the best means to reproduce and simulate the digital images. The adapting of digital imaging and photography of AgX is the key of optimizing output image quality of digital-analog imaging system. In this paper, based on the designing digital image test chart which included quality elements such as density step wedges, color chart, edges and sinusoidal patterns in different AgX photosensitive material, have obtained image quality parameters such as its MTF （Modulation Transfer Function）, Wiener spectrum and Gamut to evaluate the modulation transfer characteristics, noise and color reproduction effect of the digital-analog imaging system objectively by micro-density measurement methods.

关 键 词：数/模成像系统 成像质量 评价方法 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置]