A multi-step directional generalized gradient vector flow snake for target tumor segmentation in US-guided high-intensity focused ultrasound ablation.
Yi LeXianze XuZhongbing LiFengqiu XuWencheng ZhaoPublished in: Biomed. Signal Process. Control. (2013)
Keyphrases
- active contour model
- multi step
- gradient vector flow
- tumor segmentation
- gradient vectors
- active contours
- gvf snake
- external force
- force field
- segmentation method
- energy minimization
- region growing
- snake model
- object boundaries
- vector field
- edge preserving
- level set method
- diffusion process
- semi supervised
- shape prior
- image intensity
- k nearest neighbor
- improved algorithm
- smoothness constraint
- energy function
- image data