Continuous and discrete wavelet transforms
SIAM Review
Ten lectures on wavelets
Image selective smoothing and edge detection by nonlinear diffusion. II
SIAM Journal on Numerical Analysis
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Microlocal filtering is performed with adapted orthonormal multiwavelets and smooth frame multiwavelets in Rn. The values of the wavelet coefficients of a function give a rough estimate of its microlocal content, as shown by an example. Multidirectional denoising of images is presented as the action of a pseudodifferential operator which is the product of directional diffusion equations.