title: Resize image in xaml without losing quality
body: <p>I have this image (original size: 256x256)</p>
  
  <p><img src="https://i.stack.imgur.com/P8RF4.png" alt="enter image description here"></p>
  
  <p>I made this xaml definition to show the image in my application</p>
  
  <pre><code>&lt;Image Grid.Row="1" 
         Source="/MyProject;component/Images/happy.png" 
         Stretch="Fill" 
         Width="64" Height="64"  
         VerticalAlignment="Top" Margin="0,0,0,0" 
         HorizontalAlignment="Center" /&gt;
  </code></pre>
  
  <p>And I get this result</p>
  
  <p><img src="https://i.stack.imgur.com/xQ4fo.png" alt="enter image description here"></p>
  
  <p>How can I made a more smooth resize?</p>