title: OpenCV for Android - Access elements of Mat
body: <p>What is the standard way to access and modify individual elements of a Mat in OpenCV4Android?  Also, what is the format of the data for BGR (which is the default, I think) and grayscale?<br>
  edit: Let's make this more specific.  mat.get(row, col) returns a double array.  What is in this array?  </p>