diff --git a/config/config-test.json b/config/config-test.json
new file mode 100644
index 0000000..41e1005
--- /dev/null
+++ b/config/config-test.json
@@ -0,0 +1,23 @@
+{
+    "test-very-strong": [
+        {
+            "name": "denoise_tv_chambolle",
+            "weight": 0.01,
+            "iterations": 1
+        },
+        {
+            "name": "median",
+            "ksize": 3
+        },
+        {
+            "name": "unsharp_mask_scikit",
+            "radius": 3,
+            "amount": 7,
+            "channelAxis": 0
+        },
+        {
+            "name": "gaussian",
+            "ksize": 7
+        }
+    ]
+}
\ No newline at end of file
diff --git a/res/examples/Palec_P4.stl b/res/examples/Palec_P4.stl
deleted file mode 100644
index f091536..0000000
Binary files a/res/examples/Palec_P4.stl and /dev/null differ
diff --git a/src/filters.py b/src/filters.py
index e1f8427..09320ff 100644
--- a/src/filters.py
+++ b/src/filters.py
@@ -301,6 +301,33 @@ class unsharp_mask_scikit(filter):
         #self.img = cv.cvtColor(self.img, cv.COLOR_RGB2GRAY)
 
 
+class unsharp_mask_pil(filter):
+    ''' Unsharp mask filter from PIL.
+
+    '''
+    # TODO: does not work
+    def __init__(self, img):
+        super().__init__(img)
+
+    def apply(self, params):
+
+        # Blur radius
+        radius = int(params["radius"]) if params["radius"] else 2
+
+        # Unsharp strength in percent
+        percent = int(params["percent"]) if params["percent"] else 150
+
+        # Threshold controls the minimum brightness change that will be sharpened
+        threshold = int(params["threshold"]) if params["threshold"] else 3
+
+        #print("with params: radius: " +
+        #      str(radius) + " percent: " + str(percent) + " threshold: " + str(threshold))
+        self.img = np.uint8(self.img)
+        tmp = Image.fromarray(self.img)
+        tmp = tmp.filter(ImageFilter.UnsharpMask(radius, percent, threshold))
+        self.img = np.asarray(tmp)
+
+
 class morph(filter):
     ''' General morphological operations from OpenCV.
 
diff --git a/test.sh b/src/test.sh
similarity index 100%
rename from test.sh
rename to src/test.sh