Abstract
This chapter deals with the conversion between real (i.e., spatially and temporally continuous) images and their discrete representation. The mathematics of the conversion processes is discussed and is found to be straightforward. The introduction of perceptual considerations makes the subject more complex, but also more rewarding. It is shown that substantial improvements in image quality, for a given amount of digital data, are possible using perceptual, rather than mathematical, criteria, particularly in the choice of presampling filters and postsampling interpolators. Similarly, perceptual considerations can be brought to bear on the design of quantizers. Appropriate placement of quantization levels and the use of randomization techniques can significantly reduce the visibility of quantization noise.
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© 1986 Springer-Verlag Berlin Heidelberg
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Schreiber, W.F. (1986). Sampling, Interpolation, and Quantization. In: Fundamentals of Electronic Imaging Systems. Springer Series in Information Sciences, vol 15. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-96961-4_4
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DOI: https://doi.org/10.1007/978-3-642-96961-4_4
Publisher Name: Springer, Berlin, Heidelberg
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