Generalized gradient vector flow external forces for active contours
Signal Processing - Special issue on deformable models and techniques for image and signal processing
Selection of Optimal Stopping Time for Nonlinear Diffusion Filtering
International Journal of Computer Vision
Gradient Vector Flow Fast Geometric Active Contours
IEEE Transactions on Pattern Analysis and Machine Intelligence
A topology preserving level set method for geometric deformable models
IEEE Transactions on Pattern Analysis and Machine Intelligence
Snakes, shapes, and gradient vector flow
IEEE Transactions on Image Processing
A downstream algorithm based on extended gradient vector flow field for object segmentation
IEEE Transactions on Image Processing
GVF-based anisotropic diffusion models
IEEE Transactions on Image Processing
Dynamic directional gradient vector flow for snakes
IEEE Transactions on Image Processing
External Force for Active Contours: Gradient Vector Convolution
PRICAI '08 Proceedings of the 10th Pacific Rim International Conference on Artificial Intelligence: Trends in Artificial Intelligence
Efficient numerical schemes for gradient vector flow
Pattern Recognition
Segmentation of the left ventricle in cardiac cine MRI using a shape-constrained snake model
Computer Vision and Image Understanding
Adaptive diffusion flow active contours for image segmentation
Computer Vision and Image Understanding
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In this paper, the so-called critical point problem of Gradient vector flow (GVF) snake is studied in two respects: influencing factors and detection of the critical points. One influencing factor that particular attention should be paid to is the iteration number in the diffusion process, too large amount of diffusion would flood the object boundaries while too small amount would preserve excessive noise. Here, the optimal iteration number is chosen by minimizing the correlation between the signal and noise in the filtered vector field. On the other hand, we single out all the critical points by quantizing the GVF vector field. After the critical points are singled out, the initial contour can be located properly to avoid the nuisance arising from critical points. Several experiments are also presented to demonstrate the effectiveness of the proposed strategies.