;;; reduce-noise.scm v0.1
;;; Copyright (c) 2004 John Hall (jhall@alum.wpi.edu)
;;;
;;; A Script-Fu script for The GIMP to automate a technique to reduce
;;; CCD (sensor) noise.
;;;
;;;
;;; 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
;;;
;;;
;;; Revision history:
;;;
;;;   v0.1: - First public release

;; Applies a selective gaussian blur to reduce CCD sensor noise in an
;; image.
;;
;; This method is described by Eric R. Jeschke here:
;; http://www.gimpguru.org/Tutorials/ReducingCCDNoise/
;;
;; Eric R. Jeschke demonstrates a selective gaussian blur with a
;; radius of 2.00 and a max. delta of 101.  However, I find that less
;; aggressive numbers yield better results.  Your mileage may vary.
(define (script-fu-reduce-noise image drawable)
    (plug-in-sel-gauss TRUE image drawable 1.00 75)
    (gimp-displays-flush)
    (list image))

(script-fu-register "script-fu-reduce-noise"
                    "<Image>/Script-Fu/Enhance/Reduce Sensor Noise"
                    "Performa a smart sharpen on an image."
                    "John Hall"
                    "John Hall"
                    "2004"
                    ""
                    SF-IMAGE "The image" 0
                    SF-DRAWABLE "The layer" 0)