Title :
Spatial anisotropic diffusion and local time correlation applied to segmentation of vessels in ultrasound image sequences
Author :
Balocco, Simone ; Basset, Olivier ; Cachard, Christian ; Delachartre, Philippe
Author_Institution :
CREATIS, INSA, Lyon, France
Abstract :
The aims of this work are the reduction of speckle noise, the detection of the residual lumen shape, and the segmentation of arteriosclerosis plaque, in intravascular ultrasound (IVUS) image sequences, when blood flow and plaque present a similar echogenicity. This can be achieved with a 2D+T method using spatial and time information combining a speckle reducing edge-enhancing anisotropic diffusion method with a temporal local correlation evaluating the blood displacement area. This process allows obtaining accurate vessel segmentation and an efficient de-noising effect on the IVUS images.
Keywords :
anisotropic media; biomedical ultrasonics; blood vessels; image denoising; image segmentation; image sequences; speckle; ultrasonic imaging; 2D+T method; IVUS image sequences; arteriosclerosis plaque segmentation; blood displacement area; blood flow; denoising effect; edge-enhancing anisotropic diffusion; intravascular ultrasound; local time correlation; plaque echogenicity; residual lumen shape detection; spatial anisotropic diffusion; spatial information; speckle noise reduction; speckle reducing anisotropic diffusion; temporal local correlation; time information; ultrasound image sequences; vessels segmentation; Anisotropic magnetoresistance; Arteriosclerosis; Blood flow; Image segmentation; Image sequences; Noise reduction; Noise shaping; Shape; Speckle; Ultrasonic imaging;
Conference_Titel :
Ultrasonics, 2003 IEEE Symposium on
Print_ISBN :
0-7803-7922-5
DOI :
10.1109/ULTSYM.2003.1293202
