An Image Zooming Method Based on Partial Differential Equations
Lihua Sun · Journal of Shenyang Jianzhu University · 2008
The paper is devoted to give out a new algorithm for image zooming based on the partial differential equations and the idea of prediction-correction method.We regarded the process of image zooming as the diffusion process of the temperature on a plane object.By taking some kind of interpolation of the original image as the initial value of an anisotropic diffusion equation,we obtained our prediction value via certain numerical method.To replace the pixel value by the original image correspondingly,we obtained our correction value,which was taken as initial value in the next step of prediction-correction process.Furthermore,the numerical experiments we carried out show that the algorithm is stable;it does keep the edges and details in the original image.It is concluded that the algorithm in our paper is a good method for image zooming.