     # grab the point reference before scale
     seenKnown.P_ref = x:  seenKnown.x, y:  seenKnown.y
     #apply scaling 
-    seenKnown.x =  seenKnown.x/HALF_WINDOW_HEIGHT * HALF_WINDOW_WIDTH
-    seenKnown.y =  seenKnown.y/HALF_WINDOW_HEIGHT * HALF_WINDOW_WIDTH
+    seenKnown.x =  seenKnown.x/HALF_WINDOW_HEIGHT * SCALING_FACTOR
+    seenKnown.y =  seenKnown.y/HALF_WINDOW_HEIGHT * SCALING_FACTOR
     seenKnown
 
   appendMetadata: ->

      @evaluateAnnotations(seenKnown.P_ref)

  #helper method to summarizeKnownObjects
  firstSeen:(knownObject) ->
    x = Math.round(knownObject.x)
    y = Math.round(knownObject.y)

  #helper method to summarizeKnownObjects
  averageSeenKnownPoints: (seenKnown) ->
    HALF_WINDOW_HEIGHT = 256
    SCALING_FACTOR =  190  #aribtirary value less than HALF_WINDOW_HEIGHT
    #average the values of x and y
    seenKnown.x = seenKnown.x_accum /seenKnown.counter
    seenKnown.y = seenKnown.y_accum /seenKnown.counter
