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Name

ccdmedian - median or mean filter of an image

Synopsis

ccdmedian [parameter=value]

Description

Median filter of an image. For some cases, ccdflatten(1NEMO) will be a faster method, since a median filter needs to sort all particles in the search area and can become slow.

Parameters

The following parameters are recognized in any order if the keyword is also given:
in=
Input image file [???]
out=
Output image file [???]
n=
(odd) size of filter [5]
x=
Optional subselection of the X range (min,max) []
y=
Optional subselection of the Y range (min,max) []
nstep=
Cheat mode: replicate each nstep pixels [1]
fraction=
Fraction of positive image values in subtract mode
mode=
Mode: median, average, subtract [median] torben=t|f Use the Torben method for median filter. [f]

See Also

ccdsharp(1NEMO) , ccdsmooth(1NEMO) , ccdflatten(1NEMO) , image(5NEMO)

Author

Peter Teuben

Update History


12-Feb-05    V0.0 Created    PJT
12-Jun-2013    V0.8 mean option for speed    PJT


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