【摘 要】
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Globally exponential stability (which implies convergence and uniqueness) of their classical iterative algorithm is established using methods of heat equations and energy integral after embedding the
【机 构】
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College of Mechatronics and Automation, National University of Defense Technology, Changsha 410073,
【出 处】
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第八届全国青年岩土力学与工程会议暨青年华人岩土工程论坛
论文部分内容阅读
Globally exponential stability (which implies convergence and uniqueness) of their classical iterative algorithm is established using methods of heat equations and energy integral after embedding the discrete iteration into a continuous flow.The stability condition depends explicitly on smoothness of the image sequence, size of image domain, value of the regularization parameter, and finally discretization step.Specifically, as the discretization step approaches to zero, stability holds unconditionally.The analysis also clarifies relations among the iterative algorithm, the original variation formulation and the PDE system.The proper regularity of solution and natural images is briefly surveyed and discussed.Experimental results validate the theoretical claims both on convergence and exponential stability.
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