P1A-3 Real-Time Estimation of Lateral Displacement Using Time Domain Cross Correlation with Prior Estimates

Author

Zahiri-Azar, R. ; Salcudean, S.E.

Author_Institution

Robotics & Control Lab., British Columbia Univ., Vancouver, BC

fYear

2006

fDate

2-6 Oct. 2006

Firstpage

1209

Lastpage

1212

Abstract

Time domain cross correlation with prior estimates (TDPE) has been recently introduced for high frame rate real-time speckle tracking. TDPE uses prior displacement estimates of neighboring windows to speed up computation. A correlation monitoring technique is then used to verify the estimated displacement and if needed a recovery search is triggered to find the correct displacement. In this paper we extend the idea of TDPE to 2D motion tracking to estimate both the axial and the lateral component of the motion in real-time

Keywords

acoustic signal processing; elastic moduli measurement; motion estimation; ultrasonic imaging; ultrasonic measurement; 2D motion tracking; TDPE; axial motion component; correlation monitoring technique; lateral motion component; real time lateral displacement estimation; recovery search; speckle tracking; time domain cross correlation with prior estimates; Capacitive sensors; Computational efficiency; Decorrelation; Frequency estimation; Monitoring; Motion estimation; Radio frequency; State estimation; Tracking; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2006. IEEE

Conference_Location

Vancouver, BC

ISSN

1051-0117

Print_ISBN

1-4244-0201-8

Electronic_ISBN

1051-0117

Type

conf

DOI

10.1109/ULTSYM.2006.309

Filename

4152165