一种基于C^2连续Catmull-Rom样条的图像放大方法  

Image magnification method based on the C^2-continuous Catmull-Rom spline

作　　者：江巨浪[1] 张佑生[1] 胡连生[2] 薛峰[1] 

机构地区：[1]合肥工业大学计算机与信息学院 [2]南京审计学院信息科学学院,江苏南京210029

出　　处：《合肥工业大学学报（自然科学版）》2006年第4期385-388,共4页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(50379003);安徽省自然科学基金资助项目(03042207);安徽省教育厅自然科学基金资助项目(2005KJ096)

摘　　要：针对图像高倍放大易出现block现象,文章构造了一类5次的Catmull-Rom样条用于图像放大,取得了较为满意的效果;与3次Catmull-Rom样条具有C1连续的性质相比,所构造的5次Catmull-Rom样条在不增加插值节点情况下达到C2连续;实验结果表明,该样条用于图像放大时运行速度快,能够在放大倍数很高的情况下不出现block现象,适用于对图像的快速与高倍放大处理。To avoid the block phenomenon of high-multiple image magnification, a kind of C^2 Catmull- Rom spline function of five-degree is constructed. Compared with C^1-continuous Catmull-Rom spline function of three-degree, the five degree Catmull-Rom spline presented has the C^2-continuous character while the number of interpolating nodes needs not to be added. The experiment results show that the method of image magnification at high multiple using the five-degree C^2 Catmull-Rom spline can produce high quality images and has a high running speed, so it is suitable for the occasions where both high speed and high multiple in image magnification are required.

关 键 词：图像放大 高倍放大 Catmull—Rom样条 C^2连续 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]