| 基于上下文的高阶可导图像阈值去噪方法 |
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| 引用本文： | 李剑峰,程莹,罗彤. 基于上下文的高阶可导图像阈值去噪方法[J]. 西华大学学报(自然科学版), 2009, 28(6): 59-61,104 |
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| 作者姓名： | 李剑峰 程莹 罗彤 |
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| 作者单位： | 上海医疗器械高等专科学校医用电子信息系,上海,200093;上海电力学院计算机与信息工程学院,上海,201300 |
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| 摘 要： | 针对传统的硬软阈值函数不连续以及非自适应的缺陷，分别探讨了具有连续性和高阶可导特性的阈值函数、基于局部上下文自适应的阈值函数的构造，并提出基于局部上下文的连续高阶可导阈值函数的构造，并用于图像去噪，实验结果证明了这些方法的有效性。
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| 关 键 词： | 小波变换 上下文 阈值 图像去噪 |
Threshold Denoising Method for High Order Derivative Image Based on Context |
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| LI Jian-feng,CHENG Ying,LUO Tong. Threshold Denoising Method for High Order Derivative Image Based on Context[J]. Journal of Xihua University(Natural Science Edition), 2009, 28(6): 59-61,104 |
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| Authors: | LI Jian-feng CHENG Ying LUO Tong |
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| Affiliation: | LI Jian-feng1,CHENG Ying2,LUO Tong1(1.Medical Electron and Information Department,ShangHai Medical Instrumentation College,ShangHai 200093 China,2.Computer and Information Engineering College,ShangHai University of Electric Power,ShangHai 201300 China) |
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| Abstract: | Aiming at the defects of discontinuity and non-self-adapting of the classical threshold function,three novel threshold functions are presented.They are one with the characters of continuity and high order derivative,one with local context adaptive and one with local context adaptive.The structure of the continuous and high order derivative threshold function with local context adaptive is investigated.The function is used in image denoising.Experimental results indicate that these novel threshold functions ... |
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| Keywords: | wavelet transform context threshold image denoising |
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