A multiresolution binary level set method and its application to intracranial hematoma segmentation.
We propose a multiresolution binary level set method for image segmentation. The binary level set formulation is based on the Song-Chan algorithm, which cannot compute the edge length when the margin of the image is irregular. We modify the edge length approximation so that it can work everywhere in a single-connected image, make it suitable to segment objects at any position, especially near the margin of the image. For multiresolution processing, we use image pyramids. The binary level set method works on images with reduced resolution and size. A point at the image with lower resolution is processed instead of a block or a strip at the original resolution, therefore improving the efficiency. Our multiresolution binary level set method is applied to segmentation of intracranial hematomas on brain CT slices. Segmentation of epidural and subdural hematomas, which have been not done previously, is performed successfully in seconds with results comparable to human experts.
Graduate Institute of Biomedical Engineering, National Taiwan University, Taiwan.
Chun-Chih
CC
Liao
Furen
F
Xiao
Jau-Min
JM
Wong
I-Jen
IJ
Chiang
D000465:Algorithms; D020000:Decision Support Systems, Clinical; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D020198:Intracranial Hemorrhage, Traumatic / Q000000981:diagnostic imaging* / Q000473:pathology; D011856:Radiographic Image Enhancement