【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。更多还原

【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.更多还原