基于混合型多结点样条插值曲面的图像放大方法

A Method of Image Zooming-in Based on Mixed Many-knot Spline Surface Interpolation

多结点样条插值是一类曲线曲面的拟合方法,为了探索高质量的图像放大方法,提出了一种利用混合型多结点样条插值曲面的图像放大方法,该方法为数字图像的每一个色彩分量构造一个分块混合型多结点样条插值曲面。试验结果表明该方法对图像的放大质量较高。为了提高该方法的效率,描述了一种加速算法,该加速算法在数字漫游系统与动画制作等方面可望得到应用。

Many-knot spline interpolation is a class of curve and surface fitting method,In order to explore a new method for obtaining a zoom in image with a superior quality;the one dimensional many-knot spline curves algorithm is extended to that of two dimensions,which is applied to image zooming.It constructs a mixed piecewise many-knot spline interpolation surface for each color component of a digital image.The experimental results show that the method can improve the quality of zoomed image greatly.A fast algorithm is also described for efficiency,which is applied in digital pan and computer animation,etc.