Recent Advances in Signal Processing by Ashraf A Zaher

By Ashraf A Zaher

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34, no 1, pp: 1-14, 2001. H. & Strebel, R. (1994). Least-squares fitting of circles and ellipses , BIT, n. 34, pp. 558-578, 1994. Halder, B. ; Aghajan, H. & T. Kailath (1995). Propagation diversity enhancement to the subspace-based line detection algorithm, Proc. SPIE Nonlinear Image Processing VI Vol. 2424, p. 320-328, pp. 320-328, March 1995. R. D. E. (1993). Lipschitzian optimization without the Lipschitz constant, Journal of Optimization and Applications, vol. 79, no. 157-181, 1993. -M. -M.

2007). Array processing approach for object segmentation in images, IEEE ICASSP'07, Vol. 1, pp. 621-24, April 2007. Marot, J. & Bourennane, S. (2008). Array processing for intersecting circle retrieval, EUSIPCO'08, 5 pages, Aug. 2008. ; & Bourennane, S. (2008) Fast subspace-based source localization methods IEEE-Sensor array multichannel signal processing workshop, Darmstadt Germany, 07/ 2008 Osher, S. & Sethian, J. (1998). Fronts propagating with curvature-dependent speed: algorithms based on Hamilton-Jacobi formulations, J.

We seek for star-shaped contours, that is, contours that can be described by the relation:   f   where f is any function that maps 0 ,2  to R . The point with coordinate   0 corresponds then to the center of gravity of the contour. Generalized Hough transform estimates the radius of concentric circles when their center is known. Its basic principle is to count the number of pixels that are located on a circle for all possible radius values. The estimated radius values correspond to the maximum number of pixels.

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