数字信号处理中信噪比影响因素分析

Analysis of Factors Affecting Signal-to-Noise Ratio in Digital Signal Processing

介绍信噪比的内涵、归一化的意义以及相关的补偿原则等。现在利用数字处理来实现射线摄影已经是很平常的事情了,与传统的形式相比,其形成原因是影像探测器当中的主因对比度不同,主要体现在两者的乘积变换、因子形式的不同。归一化的提出,将数字射线成像与普通的成像技术进行了测量以及两者之间的等价处理研究。因此,研究探讨信噪比在数字处理当中的影响因素并加以分析具有实质性的意义。

This paper introduces the connotation of signal-to-noise ratio,the significance of normalization and related compensation principles.Now it is very common to use digital processing to realize radiography.Compared with the traditional form,the reason for its formation is that the main factor contrast of the image detector is different,mainly reflected in the product transformation and factor form of the two.Based on the proposed normalization,digital radiography and conventional imaging technology are measured and their equivalence processing is studied.Therefore,it is of substantial significance to study and analyze the influencing factors of signal-to-noise ratio(SNR)in digital processing.