[phenixbb] Spatial filtering

Pavel Afonine pafonine at lbl.gov
Fri Dec 6 11:23:07 PST 2013

Hi Mischa,

at present we can do this:


which is along the same lines, I guess (unsharp mask is also a part of 
FEM procedure, but it is not mentioned in above slides).

Or did you have something more specific in mind? Could you please 
explain some more?


On 12/6/13, 11:15 AM, Machius, Mischa Christian wrote:
> Potentially silly question: is spatial filtering used for increasing contrast in electron density maps? Is it used for any other kind of data manipulation in macromolecular crystallography, e.g., diffraction data processing, density modification, etc.
> I'm a bit fuzzy on that subject, and so I said 'potentially silly', because it could be that such approaches are totally common but have different names (such as local averaging/scaling and so on).
> Many thanks in advance.
> Cheers,
> MM
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