【作者】 付树军； 阮秋琦； 王文洽；

【Author】 Shujun Fu~(1,2) Qiuqi Ruan~1 Wenqia Wang~2 (1.Informatoin Science Institution,Beijing Jiaotong University,Beijing,100044) (2.School of Mathematics and System Science,Shandong University,Jinan,250100)

【机构】 北京交通大学信息科学研究所； 山东大学数学与系统科学学院；

【摘要】 针对图像放大后边缘模糊的现象,本文考察了典型边缘的特征,利用整体变分思想,提出了一种基于统一的变分模型的有噪图像放大算法.利用导出的偏微分方程和图像边缘的局部梯度信息,本文算法实施一种自适应非线性滤波处理,能够较好地保持图像边缘锐度,同时有效地去除图像噪声.理论分析和实验结果皆表明算法的有效性.更多还原

【Abstract】 To deblur edges after image magnification,an edge sharpness preserving noisy image magnification simultaneously denoising effectively is put forward,which adopts the idea of total variation model,after having reviewing the character of a typical edge.Utilizing the deduced partial differential equation and local gradients of edges,our algorithm implements an adoptive non- linear filter process.Both theoretical analysis and experiments have verified the efficiency of our algorithm in this paper.更多还原