diff --git a/script/imgtest.py b/script/imgtest.py
index 188b215..635745a 100644
--- a/script/imgtest.py
+++ b/script/imgtest.py
@@ -11,6 +11,25 @@ import ch.psi.pshell.imaging.Pen as Pen
 
 
 
+def detect_pucks(ip):
+    aux = grayscale(ip, in_place=False)
+    threshold(aux,0,50)
+    binary_fill_holes(aux)
+    return analyse_particles(aux, 10000,50000,
+            fill_holes = False, exclude_edges = True,print_table=True,
+            output_image = "outlines", minCirc = 0.4, maxCirc = 1.0)
+
+def detect_samples(ip):        
+    aux = grayscale(ip, in_place=False)
+    invert(aux)
+    subtract_background(aux)
+    auto_threshold(aux)
+    binary_open(aux)
+    return analyse_particles(aux, 250,1000, 
+            fill_holes = False, exclude_edges = True,print_table=True,
+            output_image = "outlines", minCirc = 0.9, maxCirc = 1.0)
+            
+
 class MyFilter(Filter):
     def process(self, image, data):
         ip = load_image(image)