diff --git a/app/src/main/java/org/lezizi/microsphere/PMDActivity.java b/app/src/main/java/org/lezizi/microsphere/PMDActivity.java
index edb3e2d..5f555ef 100644
--- a/app/src/main/java/org/lezizi/microsphere/PMDActivity.java
+++ b/app/src/main/java/org/lezizi/microsphere/PMDActivity.java
@@ -3,9 +3,14 @@
 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.os.Environment;
+import android.support.design.widget.FloatingActionButton;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.support.v7.widget.Toolbar;
+import android.view.View;
 import android.widget.ImageView;
+import android.widget.SeekBar;
+import android.widget.TextView;
 
 import org.opencv.android.Utils;
 import org.opencv.core.CvType;
@@ -17,50 +22,134 @@
 import org.opencv.imgcodecs.Imgcodecs;
 import org.opencv.imgproc.Imgproc;
 
+import java.security.Key;
+import java.util.ArrayList;
+import java.util.List;
+
 public class PMDActivity extends AppCompatActivity {
+    protected MatOfKeyPoint keypoints;
+    protected Mat cimg;
+    protected Mat resized;
+    protected void update_preview(){
+        SeekBar  bar1 =  findViewById(R.id.seekBar1);
+        SeekBar  bar2 =  findViewById(R.id.seekBar2);
+        SeekBar  bar3 =  findViewById(R.id.seekBar3);
+        float barValue1 = bar1.getProgress()/(float)100.0;
+        float barValue2 = bar2.getProgress()/(float)100.0;
+        float barValue3 = bar3.getProgress()/(float)100.0;
+        TextView result= findViewById(R.id.textView2);
+
+        Mat out=new Mat(cimg.rows()/4, cimg.cols()/4, CvType.CV_64FC3);
+
+        ArrayList<KeyPoint> samll_list=new ArrayList<>();
+        ArrayList<KeyPoint> middle_list=new ArrayList<>();
+        ArrayList<KeyPoint> big_list=new ArrayList<>();
+        for (KeyPoint vkp :  keypoints.toList())
+        {
+            if (vkp.size<barValue1){
+                samll_list.add(vkp);
+            }
+            if (barValue1<=vkp.size && vkp.size<barValue2){
+                middle_list.add(vkp);
+            }
+            if (barValue2<=vkp.size && vkp.size<barValue3){
+                big_list.add(vkp);
+            }
+        }
+
+        result.setText(String.format("(%.2f pix<d)=%d; (%.2f pix< d <%.2f pix)=%d; (%.2f pix< d <%.2f pix)=%d;",
+                barValue1,
+                samll_list.size(),
+                barValue1,
+                barValue2,
+                middle_list.size(),
+                barValue2,
+                barValue3,
+                big_list.size()
+                )  );
+        MatOfKeyPoint small=new MatOfKeyPoint();
+        small.fromList(samll_list);
+        Features2d.drawKeypoints(resized,small,out,new org.opencv.core.Scalar(0,255,0), Features2d.DRAW_RICH_KEYPOINTS );
+
+        MatOfKeyPoint middle=new MatOfKeyPoint();
+        middle.fromList(middle_list);
+        Features2d.drawKeypoints(out,middle,out,new org.opencv.core.Scalar(0,0,255), Features2d.DRAW_RICH_KEYPOINTS );
+
+        MatOfKeyPoint big=new MatOfKeyPoint();
+        big.fromList(big_list);
+        Features2d.drawKeypoints(out,big,out,new org.opencv.core.Scalar(255,0,0), Features2d.DRAW_RICH_KEYPOINTS );
 
+        Mat m=new Mat(cimg.rows(), cimg.cols(), CvType.CV_64FC3);
+        Imgproc.resize(out, m, m.size(),0,0,Imgproc.INTER_AREA);
+
+
+        // convert to bitmap:
+        Bitmap bm = Bitmap.createBitmap(m.cols(), m.rows(),Bitmap.Config.ARGB_8888);
+        Utils.matToBitmap(m, bm);
+
+        // find the imageview and draw it!
+        ImageView iv = findViewById(R.id.imageView1);
+        iv.setImageBitmap(bm);
+    }
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_pmd);
+
         Intent intent = getIntent();
         String filename=intent.getStringExtra(MainActivity.PMDActivity_Filename);
 
-        FeatureDetector detector = FeatureDetector.create(FeatureDetector.SIMPLEBLOB);
-        detector.read(MainActivity.app_mainpath + "detector.xml");
-        Mat cimg;
 
         try {
+            FeatureDetector detector = FeatureDetector.create(FeatureDetector.SIMPLEBLOB);
+            detector.read(MainActivity.app_mainpath + "detector.xml");
             cimg = Imgcodecs.imread(filename);
-
+            resized = new Mat(cimg.rows()/4, cimg.cols()/4, CvType.CV_64FC3);
+            Imgproc.resize(cimg, resized, resized.size(),0,0,Imgproc.INTER_AREA);
+            keypoints=new MatOfKeyPoint();
+            detector.detect(resized,keypoints);
         } catch (Exception e) {
             finish();
             return;
         }
-        Mat resized = new Mat(cimg.rows()/4, cimg.cols()/4, CvType.CV_64FC3);
-        Imgproc.resize(cimg, resized, resized.size(),0,0,Imgproc.INTER_AREA);
-        MatOfKeyPoint keypoints = new MatOfKeyPoint();
-        detector.detect(resized,keypoints);
-
+        float max_size=0;
         for (KeyPoint vkp :  keypoints.toList())
         {
-
+            if (vkp.size>max_size) max_size=vkp.size;
         }
+        SeekBar  bar1 =  findViewById(R.id.seekBar1);
+        SeekBar  bar2 =  findViewById(R.id.seekBar2);
+        SeekBar  bar3 =  findViewById(R.id.seekBar3);
+        bar1.setMax((int)(max_size*100.0));
+        bar2.setMax((int)(max_size*100.0));
+        bar3.setMax((int)(max_size*100.0));
 
-        Mat out=new Mat(cimg.rows()/4, cimg.cols()/4, CvType.CV_64FC3);
-        Mat m=new Mat(cimg.rows(), cimg.cols(), CvType.CV_64FC3);
 
-        Features2d.drawKeypoints(resized,keypoints,out,new org.opencv.core.Scalar(0,255,0), Features2d.DRAW_RICH_KEYPOINTS );
-        Imgproc.resize(out, m, m.size(),0,0,Imgproc.INTER_AREA);
+        SeekBar.OnSeekBarChangeListener listener=new SeekBar.OnSeekBarChangeListener(){
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
 
+                if (b){
+                    update_preview();
+                }
+            }
 
-        // convert to bitmap:
-        Bitmap bm = Bitmap.createBitmap(m.cols(), m.rows(),Bitmap.Config.ARGB_8888);
-        Utils.matToBitmap(m, bm);
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
 
-        // find the imageview and draw it!
-        ImageView iv = findViewById(R.id.imageView1);
-        iv.setImageBitmap(bm);
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+
+            }
+        };
+
+        bar1.setOnSeekBarChangeListener(listener);
+        bar2.setOnSeekBarChangeListener(listener);
+        bar3.setOnSeekBarChangeListener(listener);
+
+        update_preview();
     }
 
 }
diff --git a/app/src/main/res/layout/activity_maaresult.xml b/app/src/main/res/layout/activity_maaresult.xml
index a3bf45b..1bf01d5 100644
--- a/app/src/main/res/layout/activity_maaresult.xml
+++ b/app/src/main/res/layout/activity_maaresult.xml
@@ -16,22 +16,4 @@
         android:layout_height="0dp"
         android:layout_width="0dp"  />
 
-    <!--TextView
-        android:id="@+id/result_text2"
-
-        android:layout_width="0dp"
-
-        android:layout_height="0dp"
-        android:background="#ffffff"
-        android:gravity="center"
-        android:scrollHorizontally="false"
-        android:text="Hello World!"
-        android:textAppearance="@android:style/TextAppearance.DeviceDefault.Large"
-        android:visibility="visible"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintHorizontal_bias="1.0"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="1.0" /-->
 </android.support.constraint.ConstraintLayout>
diff --git a/app/src/main/res/layout/activity_pmd.xml b/app/src/main/res/layout/activity_pmd.xml
index 6b8168d..9a96de4 100644
--- a/app/src/main/res/layout/activity_pmd.xml
+++ b/app/src/main/res/layout/activity_pmd.xml
@@ -1,15 +1,99 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context="org.lezizi.microsphere.PMDActivity">
 
-    <ImageView
-        android:id="@+id/imageView1"
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:paddingLeft="10dp"
+        android:paddingRight="10dp"
+        android:orientation="vertical"
+       >
+        <TextView
+            android:id="@+id/textView1"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+
+            android:gravity="center"
+            android:scrollHorizontally="false"
+            android:text="Diameter Range Configurations"
+            android:textAppearance="@android:style/TextAppearance.DeviceDefault.Medium"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintHorizontal_bias="1.0"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="1.0" />
+
+
+        <SeekBar
+            android:id="@+id/seekBar1"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            />
+
+
+        <SeekBar
+            android:id="@+id/seekBar2"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            />
+
+
+        <SeekBar
+            android:id="@+id/seekBar3"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            />
+        <TextView
+            android:id="@+id/textView3"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+
+            android:gravity="center"
+            android:scrollHorizontally="false"
+            android:text="Detection Result"
+            android:textAppearance="@android:style/TextAppearance.DeviceDefault.Medium"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintHorizontal_bias="1.0"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="1.0" />
+        <TextView
+            android:id="@+id/textView2"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="No result." />
+        <ImageView
+            android:id="@+id/imageView1"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:src="@color/album_FontLight"
+            />
+
+    </LinearLayout>
+
+    <com.github.mikephil.charting.charts.BarChart
+        android:background="#ffffff"
+        android:id="@+id/result_text"
+        android:visibility="invisible"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+   />
+
+    <android.support.design.widget.FloatingActionButton
+        android:id="@+id/fab"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:src="@color/album_FontLight"
-        />
-</android.support.constraint.ConstraintLayout>
+        android:layout_gravity="bottom|end"
+        android:layout_margin="@dimen/fab_margin"
+        app:srcCompat="@android:drawable/ic_menu_view" />
+
+
+</android.support.design.widget.CoordinatorLayout>