guoqi. An image smoothing method of two-dimensional wavelet interpolation[J]. Journal of Image and Graphics, 2010, 15(10): 1444. DOI: 10.11834/jig.20101003.
general methods are to construct difference equation of diffusion
then solve it with initialization and edge condition. These methods have low precision and diffuse error quickly. So a wavelet interpolation method is structured in this paper and is applied to solve the diffusion equation. We get a method to Alvarez model by two-dimensional wavelet interpolation method. Wavelet function possess better partial character
compared with finite difference method
wavelet method has higher precision
slower speed of error diffusion
and not is sensitive to time interval. The experiment shows the advantages of this method compared with difference method.