Petcher, P. A. and Dixon, S. (2012) Parabola detection using matched filtering for ultrasound B-scans. Ultrasonics, Vol.52 (No.1). pp. 138-144. doi:10.1016/j.ultras.2011.07.006

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Abstract

Time of flight diffraction (ToFD) outputs B-scans using an ultrasound emitter and receiver at a constant separation, scanned over a sample surface parallel to the line between the transducers. The B-scan, with time and scan position axes, contains parabolic features characteristic of a point-like scatterer. Human vision effectively detects these shapes, but this is time consuming and requires training. A parabola matched filter has been developed that is simple to implement and transforms parabolic shapes to peaks whilst reducing noise in the scan. The scan can then be displayed as depth versus lateral position.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science > Engineering Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Time-of-flight mass spectrometry, Image processing, Surfaces (Technology) -- Defects, Ultrasonics, Parabola
Journal or Publication Title:	Ultrasonics
Publisher:	Elsevier Science BV
ISSN:	0041-624X
Official Date:	January 2012
Dates:	Date Event January 2012 Published
Volume:	Vol.52
Number:	No.1
Page Range:	pp. 138-144
DOI:	10.1016/j.ultras.2011.07.006
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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