Algorithm of Image Zoom Based on the Plane and Spherical Interpolation

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.