Hi,

ParaView doesn't currently do this (unless its implemented in the development version which I haven't used in a while).

A quick and dirty approach is with the ImageMagick suite. Another option is the GIMP scriptfu. In either case one can apply the desired operations to an image or a series of images generated in PV from the command line. I'm partial to the GIMP because it offers so much more functionality than ImageMagick. I am including a scriptfu I wrote to autocrop images from PV. It's in 2 parts, a bash script that hides some of the nastyness of invoking a scriptfu from the command line, and a scm scriptfu. Place the scm scriptfu in ~/gimp-X.X/scripts . X.X is the GIMP version number on your system. That should get you started.

Burlen

fist file: sq-auto-crop.sh

#!/bin/bash

if [ $# -ne 2 ] ; then
  echo "Usage: $0 infile outfile"
  exit 1
fi

gimp -i -b "(sq-auto-crop \"$1\" \"$2\")" -b '(gimp-quit 0)'

#EOF



second file: sq-auto-crop.scm

;------------------------------------------------------------------------------
(define
  (sq-auto-crop inFile outFile)
    (let*
      (
      (im   0)
      (dw   0)
      )

      ; load the original
      (set! im (car (gimp-file-load RUN-NONINTERACTIVE inFile inFile)))
      (set! dw (car (gimp-image-get-active-layer im)))

      ; auto-crop
      (plug-in-autocrop RUN-NONINTERACTIVE im dw)

      ; save the cropped image
      (gimp-file-save RUN-NONINTERACTIVE im dw outFile outFile)
    )
)

;EOF

On 12/16/2010 04:43 PM, Nico Schlömer wrote:
Hi all,

for Paraview's "Save Screenshot" or "Save Animation", is it possible
to trim the resulting image to to get rid of the unnecessary
background, and even more so, to treat the background color as
"transparent" (e.g. when exporting to PNG)?

Cheers,
Nico
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