Abstract：
:This work presents a method for liver isolation in magnetic resonance imaging (MRI) abdomen images. It is based on a priori statistical information about the shape of the liver obtained from a training set using the segmentation approach. Morphological watershed algorithm is used as a key technique as it is a simple and intuitive method, producing a complete division of the image in separated regions even if the contrast is poor, and it is fast, with possibility for parallel implementation. To overcome the over-segmentation problem of the watershed process, image preprocessing and postprocessing are applied. Morphological smoothing, Gaussian smoothing, intensity thresholding, gradient computation and gradient thresholding are proposed for preprocessing with morphological and graph based region adjacent list constructed for region merging. A new integrated region similarity function is also defined for region merging control. The proposed method produces good isolation of liver in axial MRI images of the abdomen, as is shown in this paper.
journal_name
J Med Systjournal_title
Journal of medical systemsauthors
Rajasvaran L,Haw TW,Sarker SZdoi
10.1007/s10916-008-9131-2subject
Has Abstractpub_date
2008-08-01 00:00:00pages
259-68issue
4eissn
0148-5598issn
1573-689Xjournal_volume
32pub_type
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