%A WANG Yuan-yuan, GUO Yan-en, SHI Guo-quan, WEI Jun-xia, XIA Shun-ren %T Algorithm for seabed terrain boundary extraction based on acoustic images %0 Journal Article %D 2015 %J Journal of ZheJiang University (Engineering Science) %R 10.3785/j.issn.1008-973X.2015.02.027 %P 376-383 %V 49 %N 2 %U {https://www.zjujournals.com/eng/CN/abstract/article_39369.shtml} %8 2015-02-17 %X

An automatic method for seabed terrain boundary extraction based on the acoustic images was proposed in order to overcome the problem of non-automatic extraction. The connected region satisfying region criterion was found by the connected component labeling method, and then a single point from the region was set as the starting point for dynamic programming optimization. In the optimizing process, the concept of energy function incorporating with grayscale, gradient, location and Webber resolution, was introduced and the boundary was then extracted automatically in the field of adjacent column dynamic optimization under the criterion of energy function minimum. Evaluation experiment with 36 cases of real data demonstrates that, the accuracy of boundary extraction achieves 92.6%, the similarity with golden standard is 93.3% and the mean Euclidean distance with golden standard is 0.23 pixels. The results indicate that, on the basis of keeping water longitudinal information, the proposed method could combine the spatial information better, extract the seabed terrain boundary accurately and have good robustness.