基于平面和球面插值的图像放大算法

Algorithm of Image Zoom Based on the Plane and Spherical Interpolation

现有的图像放大算法由于采用的插值方法存在一定的不足,容易出现"锯齿"形边缘和模糊的现象.文章改变图像的表示模型,提出了平面插值和球面插值相结合的图像插值方法.该算法避免了传统的插值方法用统一的模型逼近所有像素的不足,对不同的情况用不同的插值方法,理论分析和实验结果表明了文中方法的有效性.

Exsiting algorithm for image zoom methods have some shortcomings,often can make image have saw-tooth shaped or block phenomenon.This paper changed the model of expressing image,proposed the model plane interpolation and spherical interpolation combination of image interpolation method,which avoids the traditional interpolation unified model approximation all pixels.There＇re different circumstances with different interpolation methods.Finally,theoretical analysis and experimental results show the effectiveness of the method.