Continuation method for total variation denoising problems
Refereed conference paper presented and published in conference proceedings

香港中文大學研究人員
替代計量分析
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其它資訊
摘要The denoising problem can be solved by posing it as a constrained minimization problem. The objective function is the TV norm of the denoised image whereas the constraint is the requirement that the denoised image does not deviate too much from the observed image. The Euler-Lagrangian equation corresponding to the minimization problem is a nonlinear equation. The Newton method for such equation is known to have a very small domain of convergence. In this paper, we propose to couple the Newton method with the continuation method. Using the Newton-Kantorovich theorem, we give a bound on the domain of convergence. Numerical results are given to illustrate the convergence.
著者Chan T.F., Zhou H.M., Chan R.H.
會議名稱Advanced Signal Processing Algorithms
會議開始日09.07.1995
會議地點San Diego
會議國家/地區美國
出版年份1995
月份1
日期1
卷號2563
頁次314 - 325
國際標準書號0-8194-1922-2
國際標準期刊號1996-756X
語言英式英語
關鍵詞Denoising, Fixed-point method, Newton method, Total-variation

上次更新時間 2020-30-11 於 00:47