To deblur edges after image magnification,an edge sharpness presering noisy image magnification simultaneously denoising effectiely is put forward,which adopts the idea of total ariation model,after haing reiewing the character of a typical edge.

• 针对图像放大后出现边缘模糊的现象,该文考察了典型边缘的特征,利用整体变分思想,提出了一种基于变分模型的有噪图像放大算法。