信号与噪声

Signal and Noise

高质量数字图像捕获对电子媒体和印刷媒体都至关重要,而捕获图像质量的高低取决于信号和噪声两个基础因素,为此需要测量信号和噪声。本文在讨论信号和噪声关系的基础上,简要介绍信号和噪声的主要衡量指标,以及这些指标的测量方法。

It is very important to capture high quality digital images for both of electronic and printing media. Signal and noise need to be measured because high or low of the captured image quality are depend on the two basic factors of signal and noise. In this paper, principal metrics and test methods of signal and noise were discussed on the basis of describing their relationship.