diff --git a/res/marker_mask.bin b/res/marker_mask.bin
new file mode 100644
index 0000000..0e89463
Binary files /dev/null and b/res/marker_mask.bin differ
diff --git a/src/main/org/insa/graphics/drawing/components/BasicDrawing.java b/src/main/org/insa/graphics/drawing/components/BasicDrawing.java
index 9ceb0ac..ac79f0e 100644
--- a/src/main/org/insa/graphics/drawing/components/BasicDrawing.java
+++ b/src/main/org/insa/graphics/drawing/components/BasicDrawing.java
@@ -91,19 +91,20 @@ public class BasicDrawing extends JPanel implements Drawing {
 
     private class BasicMarkerOverlay extends BasicOverlay implements MarkerOverlay {
 
-        // Default marker width
-        private static final int DEFAULT_MARKER_WIDTH = 20;
-
         // Point of the marker.
         private Point point;
 
         // Color of the marker.
         private final Color color;
 
+        // Image to draw
+        private final BufferedImage image;
+
         public BasicMarkerOverlay(Point point, Color color) {
             super();
             this.point = point;
             this.color = color;
+            this.image = MarkerUtils.getMarkerForColor(color);
         }
 
         @Override
@@ -128,12 +129,8 @@ public class BasicDrawing extends JPanel implements Drawing {
             int px = BasicDrawing.this.projx(getPoint().getLongitude());
             int py = BasicDrawing.this.projy(getPoint().getLatitude());
 
-            BufferedImage img = MarkerUtils.getMarkerForColor(color);
-            Graphics2D gr = img.createGraphics();
-            double scale = DEFAULT_MARKER_WIDTH / (double) img.getHeight();
-            gr.scale(scale, scale);
-
-            graphics.drawImage(img, px - img.getWidth() / 2, py - img.getHeight(), BasicDrawing.this);
+            graphics.drawImage(this.image, px - this.image.getWidth() / 2, py - this.image.getHeight(),
+                    BasicDrawing.this);
         }
 
     };
diff --git a/src/main/org/insa/graphics/drawing/overlays/MarkerUtils.java b/src/main/org/insa/graphics/drawing/overlays/MarkerUtils.java
index a9916bd..42e8a88 100644
--- a/src/main/org/insa/graphics/drawing/overlays/MarkerUtils.java
+++ b/src/main/org/insa/graphics/drawing/overlays/MarkerUtils.java
@@ -1,19 +1,15 @@
 package org.insa.graphics.drawing.overlays;
 
 import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.Image;
 import java.awt.image.BufferedImage;
+import java.io.DataInputStream;
+import java.io.FileInputStream;
 
 public class MarkerUtils {
 
-    /**
-     * Return a color mapping with the given color as the main color.
-     * 
-     * @param color
-     * @return
-     */
-    protected static Color[] getColorMapping(Color color) {
-        return new Color[] { new Color(0, 0, 0, 0), color, Color.BLACK };
-    }
+    private static final String MARKER_MASK_FILE = "res/marker_mask.bin";
 
     /**
      * Create a Bitmap representing a marker of the given color.
@@ -23,83 +19,55 @@ public class MarkerUtils {
      */
     public static BufferedImage getMarkerForColor(Color color) {
         // create image
-        BufferedImage image = new BufferedImage(MARKER_MASK[0].length, MARKER_MASK.length,
-                BufferedImage.TYPE_4BYTE_ABGR);
+        int[][] mask = readMarkerMask();
+        BufferedImage image = new BufferedImage(mask[0].length, mask.length, BufferedImage.TYPE_4BYTE_ABGR);
 
-        Color[] map = getColorMapping(color);
+        // Color[] map = getColorMapping(color);
+        int rgb = color.getRGB() & 0x00ffffff;
         for (int i = 0; i < image.getHeight(); ++i) {
             for (int j = 0; j < image.getWidth(); ++j) {
-                image.setRGB(j, i, map[MARKER_MASK[i][j]].getRGB());
+                // image.setRGB(j, i, map[MARKER_MASK[i][j]].getRGB());
+                image.setRGB(j, i, rgb | (mask[i][j] << 24));
             }
         }
 
+        BufferedImage scaleImage = new BufferedImage(28, 48, BufferedImage.TYPE_4BYTE_ABGR);
+        Graphics2D graphics = scaleImage.createGraphics();
+        graphics.drawImage(image.getScaledInstance(28, 48, Image.SCALE_SMOOTH), 0, 0, null);
+        graphics.dispose();
+
         // Create Bitmap and return it.
-        return image;
+        return scaleImage;
+    }
+
+    // Mask cache
+    private static int[][] MASK_CACHE = null;
+
+    /**
+     * @return Retrieve the mask from the mask file or from the cache.
+     */
+    private static int[][] readMarkerMask() {
+        if (MASK_CACHE == null) {
+            try {
+                DataInputStream dis = new DataInputStream(new FileInputStream(MARKER_MASK_FILE));
+
+                int nrows = dis.readInt();
+                int ncols = dis.readInt();
+
+                MASK_CACHE = new int[nrows][ncols];
+                for (int i = 0; i < nrows; ++i) {
+                    for (int j = 0; j < ncols; ++j) {
+                        MASK_CACHE[i][j] = dis.readUnsignedByte();
+                    }
+                }
+                dis.close();
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+                MASK_CACHE = null;
+            }
+        }
+        return MASK_CACHE;
     }
 
-    // Mask
-    private static byte[][] MARKER_MASK = new byte[][] {
-        // @formatter:off
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0},
-		{0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0},
-		{0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0},
-		{0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0},
-		{0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0},
-		{0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0},
-		{0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0},
-		{0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0},
-		{0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0},
-		{0,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,0},
-		{1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1},
-		{1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1},
-		{1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1},
-		{1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1},
-		{1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1},
-		{1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1},
-		{1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1},
-		{0,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,0},
-		{0,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,0},
-		{0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0},
-		{0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0},
-		{0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0},
-		{0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0},
-		{0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0},
-		{0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0},
-		{0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0},
-		{0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0},
-		{0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
-		{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
-	};	
 }