Into the Heart

The image used, avoiding textual annotation and other data.

The filtered image. Wavelet scales 4 and 5 were retained, and here we see the sum of these two images.

Animation of input image and the filtered image.
Commands used

The image in FITS format (32-bit real) was wavelet transformed (à trous method), mr_transform -n 6 -x echoc.fits echocard , and the output images translated to GIF in IDL.

To probe further

Image and Data Analysis: The Multiscale Approach, J-L Starck, F Murtagh and A Bijaoui, Cambridge University Press, 1998.