Multiresolution level set algorithm based on steerable filter

A new level set way based on multi-direction gradient is proposed, in order to solve the problem of the level set gradient that is got only through the derivative of x and y direction. The two-layer steerable pyramid is used to get some different scale and directional images. And the different scale image gradient of the level set stop item adapts the two-direction gradient modulus in the old model to the four-direction gradient modulus. The interpolation method is used to pass the result from the coarser scale to the finer one. The method is compared with the original level set method. And the experimental results show that the developed algorithm is verified better than the traditional one.