An image can be compressed by trimming all but a few "harmonics" that convey the main features. In this animation, we used the wavelets coefficients instead of Fourier coefficients. One can also observe a Gibbs phenomenon around the dark edges of the clock (shades that extend far away from the edge).
This animation is part of a joint article by Hajer Bahouri & François Vigneron about signal analysis (images.math.cnr....
27 июл 2018
