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The Scientist and Engineer's
Guide to Digital Signal Processing
by Steven W. Smith
California Technical Publishing
ISBN 0-9660176-3-3 (1997)
Chapter 25. Special Imaging Techniques
- Spatial Resolution
- Sample Spacing and Sampling Aperture
- Signal-to-Noise Ratio
- Morphological Image Processing
- Computed Tomography
This chapter presents four specific aspects of image processing. First, ways to
characterize the spatial resolution are discussed. This describes the minimum
size an object must be to be seen in an image. Second, the signal-to-noise
ratio
is examined, explaining how faint an object can be and still be detected. Third,
morphological techniques are introduced. These are nonlinear operations used
to manipulate binary images (where each pixel is either black or white). Fourth, the
remarkable technique of computed tomography is described. This has
revolutionized medical diagnosis by providing detailed images of the interior of the
human body.
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