Chapter | 24 |
Noise, sharpness, resolution and information
Imaging systems transmit information and can be analysed using the procedures developed for other types of communication systems. In Chapter 7, the analysis of frequency response was introduced and developed as one of the most important of these procedures. In the context of images, this gives the means of assessing the progress of information carrying spatial signals through an imaging chain.
In common with other communication systems, this signal transfer proceeds against a background of noise. Indeed, the true effectiveness of a system for transmitting information can only be measured in terms of the signal-to-noise ...