/usr/share/gimp/2.0/scripts/egger-high-pass-sharpen.scm is in gimp-plugin-registry 7.20140602+b4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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; The GIMP -- an image manipulation program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; Highpass Filter Sharpening, V2.0 for GIMP 2.4
; Original author: Martin Egger (martin.egger@gmx.net)
; (C) 2005, Bern, Switzerland
;
; Tags: photo, sharpen
;
; Author statement:
;
; You can find more about Highpass Filter Sharpening at
; http://www.gimp.org/tutorials/Sketch_Effect/ and at
; http://www.retouchpro.com/forums/showthread.php?s=&threadid=3844&highlight=high+pass
;
; --------------------------------------------------------------------
; Distributed by Gimp FX Foundry project
; --------------------------------------------------------------------
; - Changelog -
;
; --------------------------------------------------------------------
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program; if not, write to the Free Software
; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;.
; Define the function
;
(define (script-fu-Eg-HighPassSharpen InImage InLayer InBlur InOpacity InFlatten)
;
; Save history
;
(gimp-image-undo-group-start InImage)
;
(let* (
(Temp1Layer (car (gimp-layer-copy InLayer TRUE)))
(Temp2Layer (car (gimp-layer-copy InLayer TRUE)))
)
;
(gimp-image-add-layer InImage Temp1Layer -1)
(gimp-image-add-layer InImage Temp2Layer -1)
;
(plug-in-gauss TRUE InImage Temp2Layer InBlur InBlur TRUE)
(gimp-invert Temp2Layer)
(gimp-layer-set-opacity Temp2Layer 50)
;
(let* (
(SharpenLayer (car (gimp-image-merge-down InImage Temp2Layer CLIP-TO-IMAGE)))
)
;
(gimp-levels SharpenLayer HISTOGRAM-VALUE 100 150 1.0 0 255)
(gimp-layer-set-mode SharpenLayer OVERLAY-MODE)
(gimp-layer-set-opacity SharpenLayer InOpacity)
;
; Flatten the image, if we need to
;
(cond
((= InFlatten TRUE) (gimp-image-merge-down InImage SharpenLayer CLIP-TO-IMAGE))
((= InFlatten FALSE)
(begin
(gimp-drawable-set-name SharpenLayer _"Sharpened")
(gimp-image-set-active-layer InImage InLayer)
)
)
)
)
)
;
; Finish work
;
(gimp-image-undo-group-end InImage)
(gimp-displays-flush)
)
;
(script-fu-register
"script-fu-Eg-HighPassSharpen"
_"Sharpen (_HighPassFilter)"
_"Eg High-Pass Filter Sharpen"
"Martin Egger (martin.egger@gmx.net)"
"Martin Egger, Bern, Switzerland"
"07.10.2007"
"RGB* GRAY*"
SF-IMAGE "The Image" 0
SF-DRAWABLE "The Layer" 0
SF-ADJUSTMENT _"Blur Radius" '(7.0 1.0 80.0 1.0 0 2 0)
SF-ADJUSTMENT _"Sharpening Layer Opacity" '(55.0 1.0 100.0 1.0 0 2 0)
SF-TOGGLE _"Flatten Image" FALSE
)
;
(script-fu-menu-register "script-fu-Eg-HighPassSharpen"
"<Image>/Filters/Eg")
;
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