Re: How to do frame averaging?

Posted by Gabriel Landini on Mar 04, 2007; 8:08pm
URL: http://imagej.273.s1.nabble.com/How-to-do-frame-averaging-tp3700186p3700190.html

On Sunday 04 March 2007 17:12:45 Tony Collins wrote:
> There's Nico Stuurman's Running Zprojector plugin:
> http://valelab.ucsf.edu/~nico/IJplugins/Running_ZProjector.html
> Have a look at Christopher Philip Mauer's Kalman Filter plugin too.
> http://rsb.info.nih.gov/ij/plugins/kalman.html

I think that 'running averages' (what the running Z projector does) and Kalman
filter are to be used for video *sequences* or streams, not for static series
of images of the same field.
Those two techniques give different weights to each frame in the stream, but
if one wants is to reduce the random element between shots that do not change
to increase S/N, just averaging all the fields is more appropriate.

Cheers,

G.