title: Image segmentation errors correction by mesh segmentation and deformation.
abstract: Volumetric image segmentation methods often produce delineations of anatomical structures and pathologies that require user modifications. We present a new method for the correction of segmentation errors. Given an initial geometrical mesh, our method semi automatically identifies the mesh vertices in erroneous regions with min-cut segmentation. It then deforms the mesh by correcting its vertex coordinates with Laplace deformation based on local geometrical properties. The key advantages of our method are that: (1) it supports fast user interaction on a single surface rendered 2D view; (2) its parameters values are fixed to the same value for all cases; (3) it is independent of the initial segmentation method, and; (4) it is applicable to a variety of anatomical structures and pathologies. Experimental evaluation on 44 initial segmentations of kidney and kidney vessels from CT scans show an improvement of 83% and 75% in the average surface distance and the volume overlap error between the initial and the corrected segmentations with respect to the ground-truth.
authors.affiliation: School of Eng. and Computer Science, The Hebrew Univ. of Jerusalem, Israel. achiak@cs.huji.ac.il
authors.forename: Achia
authors.initials: A
authors.lastname: Kronman
authors.affiliation: School of Eng. and Computer Science, The Hebrew Univ. of Jerusalem, Israel.
authors.forename: Leo
authors.initials: L
authors.lastname: Joskowicz
mesh_terms: D000465:Algorithms; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007668:Kidney / Q000000981:diagnostic imaging*; D007674:Kidney Diseases / Q000000981:diagnostic imaging*; D010363:Pattern Recognition, Automated / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*