NDT.net - August 2000, Vol. 5 No. 08

Synthetic Aperture Focusing Technique for Image Restauration

A.W. Elbern
L. Guimarães
Departamento de Engenharia Nuclear - UFRGS
Av. Osvaldo Aranha 99, 4o andar
90040-040 Porto Alegre - RS

NDTISS'99 - International Symposium on NDT Contribution to
the Infrastructure Safety Systems, 1999 NOV 22-26 Torres,
published by UFSM, Santa Maria, RS, Brazil
TABLE OF CONTENTS


Abstract

Introduction

Distortion Model

Algorithm

Results

Conclusion

Acknowledgment

References

  1. Frederick, J.R. "Ultrasonic Engineering" - John Willey & Sons, Inc. 1965
  2. Kino, G.S. "Acoustic Waves: Devices, Imaging, and Analog Signal Processing" - Prentice-Hall, Inc. 1987
  3. Johnson, A.J. and Barina, B.A. "The effects of Surface Mapping Corrections with Synthetic-Aperture Focusing Techniques on Ultrasonic Imaging" IEEE Trans Vol. SU- 30 No.5 - 1983
  4. Doctor,S.R. Hall,T.E., Reid,L.D. "SAFT - The Evolution of Signal Processing for Ultrasonic Testing" - NDT International, Vol.19 No. 3 - 1986
  5. Krautkrämer J. and Krautkrämer H. "Ultrasonic Testing of Materials" - Springer Verlag 1983
  6. Gonzalez, R.C. and Woods, R.E. "Digital Image Processing" - Addison Wesley Pub. - 1992.

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