Li Peng, Zou Yang, Yao Zheng'an. Fourth-order anisotropic diffusion equations for image zooming[J]. Journal of Image and Graphics, 2013, 18(10): 1261-1269. DOI: 10.11834/jig.20131006.
the anisotropic partial differential equation is better than isotropic partial differential equation. Then we analyze the diffusion directions of the different fourth-order PDEs in this paper. While ensuring that the equation is anisotropic diffusion and in order to eliminate the block effects of low order partial differential equations in image processing
we construct two anisotropic fourth-order partial differential equations.From the data and quality of image zooming
we conclude that the models we present are better than the other four models.