This chapter aims to introduce the reader into the field of speckle filtering, by emphasizing its particular characteristics that are relevant for every practitioner in the field. We begin with an introduction to filtering in medical imaging where we stress the importance of information preservation over complete filtering. This broad view motivates the following discussion on the main issues concerning speckle filtering and provides a reasonable framework to approach it. We elaborate on topics that we believe are rather specific to speckle and should be taken into account whenever the different filters described in following chapters are utilized.
Introduction to speckle filtering, Page 1 of 2
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