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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

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【作者】 江巨浪张佑生胡连生薛峰

【Author】 JIANG Ju-lang~(1,2),ZHANG You-sheng~1,HU Lian-sheng~3,XUE Feng~1(1.School of Computer and Information,Hefei University of Technology, Hefei 230009,China;2.School of Physics and Electrical Engineering,Anqing Teachers College,Anqing 246011,China;3.School of Information Science,Nanjing Audit University,Nanjing 210029,China)

【机构】 合肥工业大学计算机与信息学院南京审计学院信息科学学院合肥工业大学计算机与信息学院 安徽合肥230009安庆师范学院物理与电气工程学院安徽安庆246011安徽合肥230009江苏南京210029

【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。

【Abstract】 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.

【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)
  • 【文献出处】 合肥工业大学学报(自然科学版) ,Journal of Hefei University of Technology(Natural Science) , 编辑部邮箱 ,2006年04期
  • 【分类号】TP391.41
  • 【被引频次】4
  • 【下载频次】114
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