A New Lossy Compression Algorithm for Ultrasound Signals

被引：4

作者：

Freitas, Miguel de A. ^{[1
]}

Jimenez, Marcelo R. ^{[1
]}

Benincaza, Henrique ^{[1
]}

von der Weid, Jean P. ^{[1
]}

机构：

[1] Pontificia Univ Catolica Rio de Janeiro, BR-22451040 Rio De Janeiro, Brazil

来源：

2008 IEEE ULTRASONICS SYMPOSIUM, VOLS 1-4 AND APPENDIX | 2008年

关键词：

Non-Destructive Testing (NDT); Ultrasonics; embedded systems; data compression; FPGA;

D O I：

10.1109/ULTSYM.2008.0464

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A new lossy compression algorithm for RF ultrasound signals (A-scan) is presented, which stores only the largest variations of the original signal. The largest variation (LAVA) algorithm is a two-step, constant bit-rate (CBR) algorithm, using only simple addition/subtraction operations, which is very suitable for FPGA implementation. The algorithm is targeted for automated ultrasonic testing (AUT) systems where a significant data reduction has been obtained while preserving the important characteristics of the signal. Comparison to other existing compression techniques is provided using the PSNR metric.

引用

页码：1885 / 1888

页数：4