Phase unwrapping based on active contour model

A new phase unwrapping method based on active contour model is presented in this paper. Active contour model offers a general frame for the edge feature extraction. It defines an initial contour by some high level information, and then deforms it towards the desired feature. Then contour map is obtained, on which the fringe lines are continuous and closed. Actually the interferogram is divided into some blocks by the fringe lines and the border of the image. Finally, we do phase unwrapping for the whole image block by block. The advantages of our method are its robust to image noise and easy contour initialization. Experiment on the real data and the comparison with one traditional method demonstrate the efficiency and robust of our method.