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yup
29th March 2003, 05:20
Hi people! Need temporal median filter, pure temporal not combined temporal and spatial (Convolution3d and STMedianFilter). Filter need for processing DV source (handheld camera), remove jerky motion. May be enough only three point on time axis at same spatial position and calculate median from this point. May be need threshold for solve replace current point by median or no.
With kind regards yup.

Si
29th March 2003, 13:56
Try Sandwich (http://forum.doom9.org/showthread.php?s=&threadid=33817&highlight=sandwich)

It (temporal median filtering) doesn't work as well as you might think. :(

And maybe you could use STMedianFilter with zero values for S ?

regards
Simon

sh0dan
30th March 2003, 00:16
@yup: Temporalsoften is exactly what you're describing - however it will not remove shakes, but mostly noise.

yup
30th March 2003, 07:56
Hi sh0dan! For DV capture I try Undot() median spatial filter and after SpatialSoften (or _2DClean which work faster). Simple approach first median filter after soften filter. Now I want try this approach for time (not for spatial). Median filter use different aproach by comparing softener. Simple example one pixel in three frame intensity 56 previous 230 current (flash noise) 60 next median filter give value 60, TemporalSoften if use small value threshold not change current value.
yup.

medp7060
27th January 2009, 00:40
Where can I find Sandwich 1.3?

martino
27th January 2009, 01:24
@yup: Temporalsoften is exactly what you're describing - however it will not remove shakes, but mostly noise.
Oh it will, somewhat... with all parameters on max, but we all know how ugly that can look. :)