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Introduction to Digital Image Processin by William K. Pratt
Copyright © 2013 by CRC Press
LINEAR PROCESSING TECHNIQUES
Most discrete image processing computational algorithms are linear in nature; an
output image array is produced by a weighted linear combination of elements of an
input array. The popularity of linear operations stems from the relative simplicity of
spatial linear processing as opposed to spatial nonlinear processing. However, for
image processing operations on large image arrays, conventional linear processing
is often computationally infeasible without efficient computational algorithms. This
chapter considers indirect computational ...