WIT Press


Algorithms For Compressing Ultrasonic Images And Audio Doppler Ultrasound At Very Low Bit Rates

Price

Free (open access)

Paper DOI

10.2495/BSIM960231

Volume

3

Pages

10

Published

1996

Size

921 kb

Author(s)

F.J. Owens, Ji. Ming, S. Murphy & T. Maguire

Abstract

This paper presents and evaluates a variety of algorithms for compressing ultrasonic images and baseband audio doppler ultrasound to very low bitrates. In the case of monochrome ultrasonic image compression a number of single-frame and inter-frame codec algorithms are described and evaluated. For single-frame compression, schemes based on Differential Pulse CodeModulation (DPCM) and Entropy Encoding as well as the Discrete CosineTransform (DCT) and zonal coding are dealt with. The best compression figures that have been achieved on cardiac images are 2.5 bits/pel forthe DPCM/Entropy Coding scheme and 0.8 bits/pel for the DCT/Zonal Coding method. A range of inter-frame codec algorithms have been investigated based on Condi

Keywords