Enhancement by adaptive wavelet shrinkage denoising
The cropped image stems from slides named: Introduction to Medical Image Processing. It illustrates to me edges emphasis and/or contrast enhancement (unsharp masking) by non-linear coefficient weighting in appropriate wavelet domains.
I would retrace the mammographic image and  enhanced versions  in papers by Andrew Laine and co-authors, like Enhancement by Multiscale Nonlinear Operators (Andrew Laine, Walter Huda, in Handbook of Medical Imaging, 2000), Contrast Enhancement by Multiscale and Nonlinear Operators (J. Fan and A. Laine, 1996) [Figure 7.14: (a) Oringinal mammogram image M73. (b) Nonlinear enhancement with adaptive wavelet shrinkage denoising]:

The bottom plot is unknown to me. I don't have the knowledge of such codes  shared by the authors. There is a recent code called Wavelet Unsharp-Mask and Clarity. You might look for &quot;homomorphic wavelet filtering&quot; that could provide similar results.