Title :
A new lossy compression algorithm for ultrasound signals
Author :
de Freitas, M.A. ; Jimenez, Marcelo R. ; Benincaza, Henrique ; von Der Weid, Jean P.
Author_Institution :
Pontificia Univ. Catolica do Rio de Janeiro, Rio de Janeiro
Abstract :
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.
Keywords :
acoustic signal processing; data compression; data reduction; ultrasonic applications; AUT systems; FPGA implementation; LAVA algorithm; PSNR metric; RF ultrasound signals; automated ultrasonic testing systems; constant bit rate algorithm; data reduction; largest variation algorithm; lossy compression algorithm; Compression algorithms; Data processing; Field programmable gate arrays; Pipelines; RF signals; Radio frequency; Real time systems; Signal processing; System testing; Ultrasonic imaging; FPGA; Non-Destructive Testing (NDT); Ultrasonics; data compression; embedded systems;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0464
