In the last chapter we became acquainted with neighborhood operations for performing averaging and detecting edges. In fact, we only studied the very simplest structures in a local neighborhood: constant areas and discontinuities. However, a local neighborhood could also contain patterns. In this chapter, we discuss the simplest class of such patterns, which we will call simple neighborhoods. As an introduction, we examine what types of simple pattern can be used to make an object distinguishable from a background for the human visual system.
KeywordsPeri Convolution Sine Pyramid Tral
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