Two-dimensional frequency shift track based on geometric moment invariants

Author

Yang, Xiao ; Binjin, Chen ; Jianguo, Yu

Author_Institution

Dept. of Electron. Eng., Fudan Univ., Shanghai, China

Volume

3

fYear

2010

fDate

16-18 Oct. 2010

Firstpage

1079

Lastpage

1083

Abstract

A novel ultrasonic flow velocity estimation method employing the two-dimensional (2-D) frequency shift track is proposed. By representing the backscattered echoes from human blood in the 2-D frequency domain, this paper shows that the velocity profile measurement using pulsed-wave Doppler ultrasound and the moving target track in image processing are isomorphic problems. Therefore, feature template matching based on geometric moment invariants can be used to track the 2-D frequency shift from which the velocity is estimated. Then we discuss the characteristics of the moment invariants and present correlation coefficient as a tracing strategy. The experimental results show the method can overcome the disadvantage caused by frequency-dependent attenuation and get better effect in velocity profile estimation.

Keywords

Doppler measurement; biomedical ultrasonics; blood flow measurement; medical image processing; velocity measurement; feature template matching; geometric moment invariants; image processing; pulsed-wave Doppler ultrasound; two-dimensional frequency shift track; ultrasonic flow velocity estimation; velocity profile estimation; velocity profile measurement; Blood; Correlation; Doppler effect; Estimation; Frequency estimation; Velocity measurement; feature template matching; geometric invariant moment; two-dimensional frequency shift; velocity profile;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Informatics (BMEI), 2010 3rd International Conference on

Conference_Location

Yantai

Print_ISBN

978-1-4244-6495-1

Type

conf

DOI

10.1109/BMEI.2010.5640548

Filename

5640548