ISIS Documentation

trimfilter

Apply a trim filter to a cube

This program convolves an NxM boxcar through a cube and trims (or NULLs) pixels. A pixel at the center of the boxcar is trimmed in the output cube if the number of valid pixels inside the boxcar is less than a user specified minimum. Valid pixels are defined as those which are 1) not special pixels and 2) inside the range of the LOW and HIGH parameters. This is a very powerful trimming tool although much thought must be put into the parameters in order to obtain the optimal trimming results.

Categories


Related Applications to Previous Versions of ISIS

This program replaces the following application existing in previous versions of ISIS:
  • boxfilter

Related Objects and Documents

Applications


History

Eric Eliason1988-05-20 Original version
Jeff Anderson2002-08-01 Ported to Isis 3.0
K Teal Thompson2002-12-03 Add example
K Teal Thompson2003-03-28 Make images smaller.
Stuart Sides2003-04-04 Fixed problem with isiscvs not checking in the thumb and image directories.
Kim Sides2003-05-13 Added application test
Stuart Sides2003-05-16 Modified schema location from astogeology... to isis.astrogeology..."
Stuart Sides2003-07-29 Modified filename parameters to be cube parameters where necessary
Brendan George2006-03-20 Added Minopt parameter