Camera faces

[Questao De 5 Minutos]

I was studying this sample code, and I was wondering if it is possible to separate the drawing part instead of drawing a square if it is possible to draw the eyes and the mouth by recognition?

//Init global variables.
var width = 320;
var height = 240;
var tLast = new Date();

//Called when application is started.
function OnStart()
{
//Fix orientation to landscape since
//most phones cameras work this way.
app.SetOrientation( "Landscape" );

//Stop screen turning off.
app.PreventScreenLock( true );

//Create frame layout that fills the screen.
lay = app.CreateLayout( "Frame", "Horizontal,FillXY" );

//Create camera view control.
//(Reduce to QVGA-widthxheight resolution for performance reasons)
cam = app.CreateCameraView( 1, 1, "QVGA,UseBitmap,NoRotate,Front" );
cam.SetOnReady( cam_OnReady );
lay.AddChild( cam );

//Create an image control over the top of the
//camera view with transparency (alpha).
img = app.CreateImage( null, 1, 1 );
img.SetAlpha( 0.5 );
lay.AddChild( img );
img.SetPaintColor( "#ff0000" );
img.SetPaintStyle( "Line" );
img.SetLineWidth( 2 );
img.SetTextSize( 16 );
img.SetAutoUpdate( false );

//Add main layout to app.
app.AddLayout( lay );
}

//Called when camera is ready.
function cam_OnReady()
{
//Start preview.
cam.StartPreview();

//Start image processing.
ProcessImage();
}

//Extract and process image data.
function ProcessImage()
{
//Get faces list.
var faces = cam.FindFaces( 10 );

//Mark found faces over camera preview.
DrawFaces( faces );

//Call this function again ASAP.
setTimeout( ProcessImage, 0 );
}

//Draw area where face detected.
function DrawFaces( faces )
{
var corners, i, j, len;

//Clear image.
img.Clear();

//Loop through faces list.
for( i=0; i < faces.length; i++ )
{
//Get face info.
var face = faces[i];

//Mark face boundaries.
img.DrawRectangle( face.midPoint.x/width - face.eyeDistance/width,
face.midPoint.y/height - face.eyeDistance/height,
face.midPoint.x/width + face.eyeDistance/width,
face.midPoint.y/height + face.eyeDistance/height );
}

//Draw frame rate.
var tNow = new Date();
img.DrawText( Math.round(1000/(tNow-tLast)), 0.03, 0.06 );
tLast = tNow;

//Update image canvas.
img.Update();
}