Use the original image for cts test. Do not scale or dither it.
diff --git a/tests/src/android/media/cts/FaceView.java b/tests/src/android/media/cts/FaceView.java
index 8d54413..6d3d84b 100644
--- a/tests/src/android/media/cts/FaceView.java
+++ b/tests/src/android/media/cts/FaceView.java
@@ -57,6 +57,8 @@
 
         BitmapFactory.Options bfo = new BitmapFactory.Options();
         bfo.inPreferredConfig = Bitmap.Config.RGB_565;
+        bfo.inScaled = false;
+        bfo.inDither = false;
 
         mSourceImage = BitmapFactory.decodeResource(getResources(), resId, bfo);