3D segmentation of the liver using free-form deformation based on boosting and deformation gradients

• Published in: 2009 IEEE International Symposium on Biomedical Imaging: From Nano to Macro Vol. 5193092; pp. 494 - 497
• Main Authors: Hong Zhang, Lin Yang, Foran, D.J., Nosher, J.L., Yim, P.J.
• Format: Conference Proceeding Journal Article
• Language: English
• Published: United States IEEE 01-01-2009
• Subjects: Active shape model; Biomedical engineering; Boosting; Computed tomography; Deformable models; Image segmentation; Liver; Liver Image Segmentation; Principal component analysis; Robustness; Volume measurement
• ISBN: 1424439310; 9781424439317
• ISSN: 1945-7928; 1945-8452
• DOI: 10.1109/ISBI.2009.5193092

This paper presents a novel automatic 3D hybrid segmentation approach based on free-form deformation. The algorithms incorporate boosting and deformation gradients to achieve reliable liver segmentation of Computed Tomography (CT) scans. A free-form deformable model is deformed under the forces originating from boosting and deformation gradients. The basic idea of the scheme is to combine information from intensity and shape prior knowledge to calculate desired displacements to the liver boundary on vertices of deformable surface. Boosting classifies the 3D image into a binary mask and the edgeflow generates a force field from the mask. The deformable surface deforms iteratively according to the force field. Deformation gradients cast restriction at each deformation step. The deformation converges to a stable status to achieve the final segmentation surface.