>In practice, this doesn't work as well for more complicated images such as brains or abdomens. There is just much more to draw, and the images cease to be sparse.
Compressed sensing works just fine for brains, abdomens etc.. because the images need to be sparse in some basis (e.g. wavelets), not in the original space.
Compressed sensing works just fine for brains, abdomens etc.. because the images need to be sparse in some basis (e.g. wavelets), not in the original space.