diff --git a/src/main/java/plugins/adufour/roi/ROIEllipsoidFittingDescriptor.java b/src/main/java/plugins/adufour/roi/ROIEllipsoidFittingDescriptor.java
index 49c57c4eb694d2af6b5d1debbb3f2515d2099253..1ce33f78f6f8d81362557ce6aa3ea896ccffb7d5 100644
--- a/src/main/java/plugins/adufour/roi/ROIEllipsoidFittingDescriptor.java
+++ b/src/main/java/plugins/adufour/roi/ROIEllipsoidFittingDescriptor.java
@@ -318,6 +318,24 @@ public class ROIEllipsoidFittingDescriptor extends Plugin implements PluginROIDe
             return "\u00B0";
         }
 
+        @Override
+        public Object getNullValue()
+        {
+            return Double.valueOf(0d);
+        }
+        
+        @Override
+        public Object getMinValue()
+        {
+            return Double.valueOf(0d);
+        }
+
+        @Override
+        public Object getMaxValue()
+        {
+            return Double.valueOf(180d);
+        }
+
         @Override
         public Object compute(ROI roi, Sequence sequence) throws UnsupportedOperationException, InterruptedException
         {
@@ -377,6 +395,24 @@ public class ROIEllipsoidFittingDescriptor extends Plugin implements PluginROIDe
             return "\u00B0";
         }
 
+        @Override
+        public Object getNullValue()
+        {
+            return Double.valueOf(0d);
+        }
+        
+        @Override
+        public Object getMinValue()
+        {
+            return Double.valueOf(-180d);
+        }
+
+        @Override
+        public Object getMaxValue()
+        {
+            return Double.valueOf(180d);
+        }
+
         @Override
         public Object compute(ROI roi, Sequence sequence) throws UnsupportedOperationException, InterruptedException
         {
@@ -439,6 +475,24 @@ public class ROIEllipsoidFittingDescriptor extends Plugin implements PluginROIDe
             return "\u00B0";
         }
 
+        @Override
+        public Object getNullValue()
+        {
+            return Double.valueOf(0d);
+        }
+        
+        @Override
+        public Object getMinValue()
+        {
+            return Double.valueOf(0d);
+        }
+
+        @Override
+        public Object getMaxValue()
+        {
+            return Double.valueOf(180d);
+        }
+
         @Override
         public Object compute(ROI roi, Sequence sequence) throws UnsupportedOperationException, InterruptedException
         {
diff --git a/src/main/java/plugins/adufour/roi/ROIHaralickTextureDescriptor.java b/src/main/java/plugins/adufour/roi/ROIHaralickTextureDescriptor.java
index e3dd1718b13728218ffca82fb406b8af8c40f745..02518185d725fc8311455ac42fd1b2c5e8a2540c 100644
--- a/src/main/java/plugins/adufour/roi/ROIHaralickTextureDescriptor.java
+++ b/src/main/java/plugins/adufour/roi/ROIHaralickTextureDescriptor.java
@@ -61,6 +61,24 @@ public class ROIHaralickTextureDescriptor extends Plugin implements PluginROIDes
             return true;
         }
 
+        @Override
+        public Object getNullValue()
+        {
+            return Double.valueOf(0d);
+        }
+
+        @Override
+        public Object getMinValue()
+        {
+            return Double.valueOf(0d);
+        }
+
+        @Override
+        public Object getMaxValue()
+        {
+            return Double.valueOf(1d);
+        }
+
         @Override
         public Object compute(ROI roi, Sequence sequence) throws UnsupportedOperationException, InterruptedException
         {
@@ -164,6 +182,24 @@ public class ROIHaralickTextureDescriptor extends Plugin implements PluginROIDes
             return true;
         }
 
+        @Override
+        public Object getNullValue()
+        {
+            return Double.valueOf(0d);
+        }
+
+        @Override
+        public Object getMinValue()
+        {
+            return Double.valueOf(0d);
+        }
+
+        @Override
+        public Object getMaxValue()
+        {
+            return Double.valueOf(1d);
+        }
+
         @Override
         public Object compute(ROI roi, Sequence sequence) throws UnsupportedOperationException, InterruptedException
         {
@@ -216,8 +252,7 @@ public class ROIHaralickTextureDescriptor extends Plugin implements PluginROIDes
      *         (see {@link #getDescriptors()}) for a full list
      * @throws InterruptedException
      */
-    public static Map<ROIDescriptor, Object> computeHaralickFeatures(Sequence sequence, ROI2D roi, int step)
-            throws InterruptedException
+    public static Map<ROIDescriptor, Object> computeHaralickFeatures(Sequence sequence, ROI2D roi, int step) throws InterruptedException
     {
         int c = roi.getC();
         if (c == -1)