Introduction to speckle filtering

Introduction to speckle filtering

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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.

Chapter Contents:

  • 5.1 The problem of filtering in medical imaging
  • 5.2 Important issues about speckle filtering
  • 5.2.1 On the ultimate goal of speckle filtering
  • Complete speckle elimination
  • Selective speckle elimination
  • 5.2.2 On the necessity of an accurate speckle model
  • 5.2.3 Practical implementation, filter parameters and noise estimation
  • Some practical implementation issues
  • Estimation of the coefficient of variation
  • 5.2.4 Evaluation and validation of speckle filtering
  • 5.2.5 On the similarity between SAR and ultrasound images
  • 5.3 Some final remarks
  • Acknowledgments
  • References

Inspec keywords: biomedical ultrasonics; image filtering; medical image processing

Other keywords: ultrasound imaging; information preservation; speckle filtering; medical imaging

Subjects: Sonic and ultrasonic radiation (medical uses); Sonic and ultrasonic radiation (biomedical imaging/measurement); Computer vision and image processing techniques; Biology and medical computing; Sonic and ultrasonic applications; Optical, image and video signal processing; Patient diagnostic methods and instrumentation

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