5 ms·
>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 spar
by iskander 17y ago
>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.
- yummyfajitas 17y agoI haven't seen any good compressed sensing reconstruction for brains, though I'm not 100% up to date on the literature. Can you give me a cite? The best I've seen is Candes/Donoho's reconstruction based on curvelets, but they don't offer any real improvement over regular reconstruction.
- iskander 17y agoCheck out Lustig's thesis. He finds that you can keep the same brain image quality while accelerating the sampling considerably. http://yonit.stanford.edu/cgi-bin/axs/ax.pl?http://www-mrsrl.stanford.edu/~mlustig/thesis.pdf http://yonit.stanford.edu/cgi-bin/axs/ax.pl?http://www-mrsrl...
- Schtarflucz 17y agoHas someone been able to improve the (spatial or temporal) resolution of fMRI scans using this technique?
- yummyfajitas 17y agoThanks.