In this paper, we introduce a novel approach for active contours with free endpoints. A scheme is presented for image segmentation and restoration based on a discrete version of the Mumford-Shah functional where the contours can be both closed and open curves. Additional to a flow of the curves in normal direction, evolution laws for the tangential flow of the endpoints are derived. Using a par...

We analyse the problem of image segmentation, in the framework of the approximation theory (as it was deened by Mumford and Shah). We show that for real images the problem of the choice of the energy functional is dictated by the model of the world, and we propose a method to optimize it based upon a deterministic algorithm processed at multiple levels of resolution. Problems encountered in dea...

In this paper we study a multi-server queue with single Vacation (e,d)policy using DSW (Dong, Shah, Wong) algorithm. Vacation rate is fuzzy number. Approximate method of extension namely DSW algorithm is used to define membership functions of the performance measures. It is based on the αcut representation of fuzzy sets in a standard interval analysis. Numerical example is given to test the fea...

We study a regularized Mumford-Shah functional in the context of joint prior models for blur identification, blind image deconvolution and segmentation. For the ill-posed regularization problem, it is hard to find a good initial value for ensuring the soundness of the convergent value. A newly introduced prior solution space of point spread functions in a double regularized Bayesian estimation ...

A novel method for finger vein pattern extraction from infrared images is presented. This method involves four steps: preprocessing which performs local normalization of the image intensity, image enhancement, image segmentation, and finally postprocessing for image cleaning. In the image enhancement step, an image which will be both smooth and similar to the original is sought. The enhanced im...

Dennis, M. and Lindesay, J. (1995). Suicide in the elderly: the United Kingdom perspective. International Psychogeriatrics, 7, 263–274. Department of Health (1999). Saving Lives: Our Healthier Nation. (Cm 4386). London: Stationery Office. Harwood, D. M. J., Hawton, K., Hope, T. and Jacoby, R. (2000). Suicide in older people: mode of death, demographic factors, and medical contact before death. ...

The Mumford-Shah functional has had a major impact on a variety of image analysis problems, including image segmentation and filtering, and, despite being introduced over two decades ago, it is still in widespread use. Present day optimization of the Mumford-Shah functional is predominated by active contour methods. Until recently, these formulations necessitated optimization of the contour by ...

A transient PEMFC model with CO poisoning and mitigation by O2 bleeding and Ru-containing catalyst A.A. Shah a,∗, P.C. Sui b, G.-S. Kim c, S. Ye c a Queen’s, RMC Fuel Cell Research Centre, 945 Princess Street, Kingston, Ont. K7L 5L9, Canada b Institute for Integrated Energy Systems, University of Victoria, Victoria, BC V8W 3P6, Canada c Ballard Power Systems, 4343 North Fraser Way, Burnaby, BC ...