Cao Yang
Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Gender:Female
Alma Mater:Jilin University
Degree:Doctoral Degree
School/Department:School of Mathematical Sciences
Discipline:Applied Mathematics
E-Mail:mathcy@dlut.edu.cn
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Indexed by:期刊论文
Date of Publication:2011-03-26
Journal:吉林大学学报（理学版）
Included Journals:PKU、ISTIC、CSCD
Volume:49
Issue:2
Page Number:164-168
ISSN No.:1671-5489
Key Words:自适应;乘性去噪;阶梯效应;扩散方程
Abstract:提出一类自适应扩散方程并将其相应的模型用于乘性去噪,该类模型能针对乘性噪声的特点,根据局部梯度信息自适应地选择扩散模式:其扩散速度和噪声大小成正比,没有噪声的区域不扩散,同时结合了热方程各向同性扩散和全变差流各向异性扩散的特点.理论分析和实验结果表明,该类模型能自适应地光滑区域内部,增强边界,避免阶梯效应.
