Paper title
“On the Performance of Time Frequency Distributions in A-Scan Signals
Classification”
Authors:
Mohamed Deriche, Ahmed Yamani
Affiliation:
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS, DHAHRAN, SAUDI ARABIA, 31261.
Abstract
— In this paper we discuss the performance of different time frequency
distributions in characterizing AScan signals in NDT applications. We then
introduce a new set of time frequency features that we extract from such
distributions. In particular, we propose to extract four signals representing
energy and frequency parameters of Ascan signals. We show that the means and
spreads extracted from such signals can be used as robust features for
classification of A-scans signals. We also show the best discrimination among
different classes of A-scans can be obtained using the Gabor transform. |
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