NDLI: Processing algorithms for three-dimensional data compression of ultrasonic radio frequency signals

Content Provider	IET Digital Library
Author	Govindan, Pramod Saniie, Jafar
Abstract	Ultrasonic systems are widely used in imaging applications for non-destructive evaluation, quality assurance and medical diagnosis. These applications require large volumes of data to be processed, stored and/or transmitted in real-time. Therefore it is essential to compress the acquired ultrasonic radio frequency (RF) signal without inadvertently degrading desirable signal features. In this paper, two algorithms for ultrasonic signal compression are analysed based on: sub-band elimination using discrete wavelet transform; and decimation/interpolation using time-shift property of Fourier transform. Both algorithms offer high signal reconstruction quality with a peak signal-to-noise ratio (PSNR) between 36 to 39 dB for minimum 80% compression. The computational loads and signal reconstruction quality are examined in order to determine the best compression method in terms of the choice of DWT kernel, sub-band decomposition architecture and computational efficiency. Furthermore, for compressing a large amount of volumetric information, three-dimensional (3D) compression algorithms are designed by utilising the temporal and spatial correlation properties of the ultrasonic RF signals. The performance analysis indicates that the 3D compression algorithm presented in this paper offers an overall 3D compression ratio of 95% with a minimum PSNR of 27 dB.
Starting Page	267
Ending Page	276
Page Count	10
ISSN	17519675
Volume Number	9
e-ISSN	17519683
Issue Number	Issue 3, May (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/9/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2014.0186
Journal	IET Signal Processing
Publisher Date	2015-04-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Data Compression Discrete Wavelet Transform DWT Kernel Fourier Transform Imaging Application Integral Transforms Medical Diagnosis Nondestructive Evaluation Peak Signal-to-noise Ratio Processing Algorithm PSNR Quality Assurance Radio Link And Equipment Radio Network Signal Feature Signal Processing And Detection Signal Reconstruction Signal Reconstruction Quality Spatial Correlation Property Temporal Correlation Property Three Dimensional Data Compression Ultrasonic Radio Frequency Signal Ultrasonic Signal Compression Ultrasonic System Volumetric Information
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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