--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/data_generation/transformations/gimp_script.py	Fri Feb 26 14:15:38 2010 -0500
@@ -0,0 +1,71 @@
+#!/usr/bin/env python
+# coding: utf-8
+
+'''
+Filtres GIMP sous Python
+Auteur: Nicolas Boulanger-Lewandowski
+Date: Hiver 2010
+
+run with: gimp -i --batch-interpreter python-fu-eval --batch - < gimp_script.py
+end with: pdb.gimp_quit(0)
+
+Implémente le motionblur et le pinch
+'''
+
+from gimpfu import *
+import numpy
+
+img = gimp.Image(32, 32, GRAY)
+img.disable_undo()
+layer1 = gimp.Layer(img, "layer1", 32, 32, GRAY_IMAGE, 100, NORMAL_MODE)
+img.add_layer(layer1, 0)
+dest_rgn = layer1.get_pixel_rgn(0, 0, 32, 32, True)
+
+def setpix(image):
+    dest_rgn[:,:] = (image.T*255).astype(numpy.uint8).tostring()
+    layer1.flush()
+    layer1.update(0, 0, 32, 32)
+
+def getpix():
+    return numpy.fromstring(dest_rgn[:,:], 'UInt8').astype(numpy.float32).reshape((32,32)).T / 255.0
+
+class GIMP1():
+    def get_settings_names(self):
+        return ['mblur_length', 'mblur_angle', 'pinch']
+    
+    def regenerate_parameters(self, complexity):
+        if complexity:
+            self.mblur_length = abs(int(round(numpy.random.normal(0, 3*complexity))))
+        else:
+            self.mblur_length = 0
+        self.mblur_angle =  int(round(numpy.random.uniform(0,360)))
+        self.pinch = numpy.random.uniform(-complexity, 0.7*complexity)
+
+        return [self.mblur_length, self.mblur_angle, self.pinch]
+
+    def transform_image(self, image):
+        if self.mblur_length or self.pinch:
+            setpix(image)
+            if self.mblur_length:
+                pdb.plug_in_mblur(img, layer1, 0, self.mblur_length, self.mblur_angle, 0, 0)
+            if self.pinch:        
+                pdb.plug_in_whirl_pinch(img, layer1, 0.0, self.pinch, 1.0)
+            image = getpix()
+
+        return image
+
+# test
+if __name__ == '__main__':
+    import Image
+    im = numpy.asarray(Image.open("a.bmp").convert("L")) / 255.0
+
+    test = GIMP1()
+    print test.get_settings_names(), '=', test.regenerate_parameters(1)
+    #for i in range(1000):
+    im = test.transform_image(im)
+
+    import pylab
+    pylab.imshow(im, pylab.matplotlib.cm.Greys_r)
+    pylab.show()
+
+    pdb.gimp_quit(0)