DocumentCode :
1947709
Title :
Contour extraction in prostate ultrasound images using the wavelet transform and snakes
Author :
Zhao, Fangwei ; Desilva, Christopher J S
Author_Institution :
Centre for Intelligent Inf. Process. Syst., Western Australia Univ., Nedlands, WA, Australia
Volume :
3
fYear :
2001
fDate :
2001
Firstpage :
2641
Abstract :
It is extremely difficult to locate the contour of the prostate in B-scan ultrasound images automatically by computer because of low resolution and high noise levels. In this paper we present a semi-automatic prostate contour extraction scheme, which is based on the wavelet transform and active-contour models, or snakes. The ultrasound image is first decomposed into edge maps at different resolutions via the wavelet transform. Seed points are found in the coarsest edge map by examining the maxima along the radial profiles which emanate from an anchor point selected manually. These seed points are used to initialize a snake, which will evolve across the edge maps at different resolutions and eventually converge to the contour of the prostate.
Keywords :
biological organs; biomedical ultrasonics; edge detection; image resolution; medical image processing; physiological models; wavelet transforms; B-scan ultrasound images; automatic contour location; coarsest edge map; contour extraction in prostate ultrasound images; edge maps; medical diagnostic imaging; prostate contour convergence; seed points; snake initialization; ultrasound image decomposition; Active contours; Australia; Discrete wavelet transforms; Image edge detection; Image resolution; Noise level; Spline; Ultrasonic imaging; Wavelet analysis; Wavelet transforms;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
ISSN :
1094-687X
Print_ISBN :
0-7803-7211-5
Type :
conf
DOI :
10.1109/IEMBS.2001.1017325
Filename :
1017325
Link To Document :
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