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所属单位：电子信息工程学院

发表刊物：ELECTRONICS LETTERS

关键字：delay circuits phase shifters controllers optimal control time-domain analysis phase control Bode diagrams transient response time delay optimal controller parameters pole placement requirements time-domain performance index direct control trial-and-error phase-lead design techniques crossover frequency phase shift Bode diagrams root locus industrial applications phase-lead controllers transient response pole-zero ratio minimisation approach pole placement analytical phase-lead controller design

摘要：Active contour model driven by novel fitting term is proposed for image segmentation in this letter. The novel fitting term contains two parts: one is L1 fitting term, which describes the change of energy between inside and outside the curve; another is the reciprocal crossentropy fitting term, which can compute the local energy of every point on the curve. The reciprocal cross- entropy fitting term is more robust than L1 fitting term when the regional grey scale fluctuates greatly, and the detail direction of the curve can be controlled better by it. Experiments on several synthetic and real images have shown that the proposed model achieves better segmentation results and efficiency than the other models; in addition, it is insensitive to different initial contours.

ISSN号：0013-5194

是否译文：否

发表时间：2017-06-22

合写作者：倪康

通讯作者：吴一全