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
收藏
页码：1885 / 1888
页数：4
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