南阳师范学院学报2016，Vol.15Issue(12)：29-35,7.
基于混合阶偏微分方程的图像放大
Image enlargement based on hybrid-order partial differential equation
闵义博 1潘强辉 1海涛1
作者信息
- 1. 南阳师范学院 机电工程学院,河南 南阳 473061
- 折叠
摘要
Abstract
A method of the image enlargement is proposed,which combines the isotropic forth order PDE and the improved TV model based on the analysis of the characteristic of four order PDE avoiding the staircase effect.Using the bi-orthogonal projection to realize the constraint of the degradation model, for low gradient pixel the forth-order partial differential equation (PDE) diffusion is performed and for high gradient pixel the second-order PDE diffusion is strengthened with shock filters.Comparing with other existing PDE-based zoom methods, it is proved that the proposed method has better visual effect not only on the strong edges but also on weak edges and the zoomed image using the proposed method looks more natural and visual effective on minor textures is better.关键词
四阶偏微分方程/图像放大/各向同性扩散/冲激滤波器Key words
fourth-order partial different equation/image enlargement/isotropic diffusion/shock filter分类
信息技术与安全科学引用本文复制引用
闵义博,潘强辉,海涛..基于混合阶偏微分方程的图像放大[J].南阳师范学院学报,2016,15(12):29-35,7.
