| 自适应耦合全变分和四阶PDE的图像放大 |
| |
| 引用本文： | 惠卫华.自适应耦合全变分和四阶PDE的图像放大[J].河北北方学院学报(自然科学版),2011,27(3):26-31. |
| |
| 作者姓名： | 惠卫华 |
| |
| 作者单位： | 喀什师范学院物理系,新疆喀什,844000 |
| |
| 摘 要： | 目的 提出一种新的基于偏微分方程(PDE)的图像放大算法.方法 算法模型由全变分、四阶PDE和数据保真项构成,将图像演化的过程转为PDE模型,进而通过迭代求解方程得到放大图像.结果 通过设置与图像局部特征有关的连续函数作为调节全变分和四阶PDE的权重,实现两种PDE的自适应耦合,避免了全变分模型在放大时出现分块效应；通...
|
| 关 键 词： | 图像放大 偏微分方程(PDE) 全变分(TV) 四阶偏微分方程 保真项 |
Image Magnification by Adaptive Coupling of Total Variation and Fourth-order PDE |
| |
| HUI Wei-hua.Image Magnification by Adaptive Coupling of Total Variation and Fourth-order PDE[J].Journa of Hebei North University:Natural Science Edition,2011,27(3):26-31. |
| |
| Authors: | HUI Wei-hua |
| |
| Institution: | HUI Wei-hua(Department of Physics,Kashgar Teachers College,kashgar 84400,Xinjiang,China) |
| |
| Abstract: | Objective Based on Partial Differential Equations(PDE),a novel image magnification algorithm is presented.Methods It consists of total variation(TV),fourth-order PDE and fidelity term.The process of image evolution is converted to PDE model,and magnified image is the iterative root of the model.Results In the zoomed image,the weighting of TV and fourth-order PDE are balanced through continuous function based on image features,avoiding blocky effects of TV model;the diffusion is adjusted and the features is ... |
| |
| Keywords: | image magnification PDE total variation(TV) fourth-order PDE fidelity term |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
