A new steerable pressure force for parametric deformable models

摘要: Active contour models have been widely used in various image analysis applications. Despite their usefulness, there are problems limiting utility, such as capture range, concavity conformation, and convergence rate. This paper presents a new pressure-like force that not only improves rate, but also encourages contours to conform to concave regions. Unlike the traditional pressure force, this does require users' input for direction and is steerable according content. Better rate well normalization consistency of this new are presented when compared with those gradient vector flow field on synthetic images. Accuracies of these two methods against manual markups a set cardiac MRI Moreover, results a MRI smoothed at different levels demonstrate robustness noise.