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Digital Signal Processing and Image Analysis

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Publications

Phd Thesis

Fredrik Lingvall
Time-Domain Reconstruction Methods for Ultrasonic Array Imaging - A Statistical Approach
PhD Thesis, Uppsala University, ISBN 91-506-1772-9, September 2004.
Abstract; Thesis available in PDF [9.27M].

Licentiate Thesis

Fredrik Lingvall
Efficient Data Representations for Eddy Current and Ultrasonic Applications.
March 2000.
Abstract; Thesis available in PDF [20.0M].

Journal Publications

  1. F. Lingvall and L.-J. Brännmark, "Multiple-Point Statistical Room Correction for Audio Reproduction: Minimum Mean Squared Error Correction Filtering". Journal of the Acoustic Society of America, JASA, Vol. 125, Issue 4 (April) 2009, pp. 2121-2128.
  2. F. Lingvall and T. Olofsson, "Statistically Motivated Design of Input Signals for Modern Ultrasonic Array Systems". Journal of the Acoustic Society of America, JASA, Vol. 123 (5), May 2008, pp. 2620-2630. Movies corresponding to: Fig 6(a) [1.4M], Fig 6(b) [440K], Fig 7(a) [760K], Fig 7(b) [2.5M], Fig 8(a) [2.5M], and Fig 8(b) [2.5M].
  3. F. Lingvall and T. Olofsson, "On Time-domain Model Based Ultrasonic Array Imaging" IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, Special Issue on High Resolution Ultrasonic Imaging in Industrial, Material and Biomaterial Applications, vol 54, no 8, 2007, Aug. 2007, pp. 1623-1633.
  4. F. Lingvall, "A Method of Improving Overall Resolution in Ultrasonic Array Imaging using Spatio-Temporal Deconvolution", Ultrasonics, vol. 42, no. 1-9, pp. 961-968, April, 2004.
  5. F. Lingvall, T. Olofsson and T. Stepinski, " Synthetic Aperture Imaging using Sources with Finite Aperture-Deconvolution of the Spatial Impulse Response " Journal of the Acoustic Society of America, JASA, vol. 114 (1), July 2003, pp. 225-234.
  6. F. Lingvall and T. Stepinski, " Automatic Detecting and Classifying Defects During Eddy Current Inspection of Riveted Lap-Joints", NDT&E International, vol. 33, no 1, 2000, pp. 47-55.

Publications at Conferences

  1. F. Lingvall and T. Olofsson, "Statistically Motivated Design of Input Signals for Ultrasonic Array Imaging", Ultrasonics Symposium, 2006 IEEE 2-6 Oct., pp 144-147
  2. F. Lingvall and T. Olofsson, " High resolution ultrasonic array imaging using positivity constraints on the scattering amplitudes", Ultrasonics Symposium, 2005 IEEE Volume 1, 18-21 Sept. 2005 Page(s):548-551
  3. F. Lingvall and T. Stepinski, " Compensating Transducer Diffraction Effects in Synthetic Aperture Imaging for Immersed Solids", IEEE International Ultrasonic Symposium, October 8-11, Munich, Germany, 2002.
  4. F. Lingvall, T. Olofsson, E. Wennerström and T. Stepinski, "Optimal Linear Receive Beamformer for Ultrasonic Imaging in NDE", Presented at the 6th World Congress of NDT, Montréal, August, 2004.
  5. T. Stepinski and F. Lingvall, " Optimized Algorithm for Synthetic Aperture Imaging", Presented at the IEEE International Ultrasonic Symposium, 24-27 August, Montréal, Canada, 2004.
  6. F. Lingvall and T. Stepinski, "Two-dimensional synthetic focusing using large apertures---Deconvolution of the spatial impulse response", J. Acoust. Soc. Am., Vol. 110, No. 5, Pt. 2, 2001.
  7. T. Stepinski and F. Lingvall, "Automatic Defect Characterisation in Ultrasonic NDT", 15th World Conference on NDT Rome, 15-21 October, 2000.
  8. F. Lingvall and T. Stepinski, " Automatic Detection of Defects in Riveted Lap-joints using Eddy Current", 7th European Conference on Non-destructive Testing (7th ECNDT), Copenhagen, Denmark, 26-29 May, 1998.

Presentations

  1. F. Lingvall, "A Short Introduction to Bayesian Inference", Presented Feb. 14th 2008, at the Department of Informatics, University of Oslo, Norway. Available as a PDF file [920K].
  2. F. Lingvall, "Model Based Ultrasonic Array Imaging", Presented Feb. 4th 2008, at the Petroleum Geo-Services (PGS) office, Lysaker, Norway. Available as PowerPoint and OpenOffice presentations in a compressed tar file [14M].
  3. F. Lingvall, "Statistically Motivated Design of Input Signals for Ultrasonic Array Imaging", Presented the Ultrasonics Symposium, 2006 IEEE 2-6 Oct, Vancover, Canada. Available as PowerPoint presentation in a compressed tar file [20M].

Reports

  1. T. Stepinski (ed), F. Lingvall, E. Wennerström, and P. Wu, " Inspection of Copper Cansisters for Spent Nuclear Fuel by means of Ultrasound---NDE of friction stir weld, nonlinear acoustics, ultrasound imaging", Jan 2004, SKB Technical Report SKB TR-06-02, 2006.
  2. F. Lingvall, P. Wu, T. Sepinski, " Inspection of Copper Cansisters for Spent Nuclear Fuel by means of Ultrasound---NDE of friction stir weld, nonlinear acoustics, ultrasound imaging", Jan 2004, SKB Technical Report TR-04-03, 2004.
  3. F. Lingvall, P. Wu, and T. Stepinski, " Inspection of Copper Cansisters for Spent Nuclear Fuel by means of Ultrasound---Nonlinear acoustics, synthetic aperture imaging", March 2003, SKB Technical Report TR-03-05, 2003.
  4. T. Stepinski, P. Wu, and F. Lingvall, " Inspection of copper canisters for spent nuclear fuel by means of ultrasound. Review of the research work performed in period 1994-2000"SKB Technical Report TR-02-05, 2005.
  5. T. Stepinski, F. Lingvall and P. Wu, "Inspection of Copper Cansisters for Spent Nuclear Fuel by means of Ultrasound---Ultrasonic imaging of EB welds, theory of harmonic imaging of welds, NDE of cast iron", July 2001, SKB Technical Report TR-01-36, 2001
  6. P. Wu, F. Lingvall and, T. Stepinski, "Inspection of copper canisters for spent nuclear fuel by means of ultrasound. Electron beam evaluation, harmonic imaging, materials characterization, and ultrasonic modelling", SKB Technical Report 2000, SKB TR-00-23.
  7. F. Lingvall and T. Stepinski, "Ultrasonic Charecterization of Defects---Study of Realistic Flaws in Welded Carbon Steel" Swedish Nuclear Inspectorate (SKi) Technical report 1999.
  8. P. Wu, F. Lingvall and T. Stepinski "Inspection of Copper Canisters for Spent Nuclear Fuel by Means of Ultrasonic Array System---Electron beam evaluation, modeling and materials characterization", SKB Technical Report TR-99-43.

Copyright

The electronically available papers here are presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders, like the IEEE. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

21.04.2009
Fredrik Lingvall