code: private void computeContainment( int imageArea ) {
  		// mark that the track is in the inlier set and compute the containment rectangle
  		contRect.x0 = contRect.y0 = Double.MAX_VALUE;
  		contRect.x1 = contRect.y1 = -Double.MAX_VALUE;
  		for( AssociatedPair p : motion.getModelMatcher().getMatchSet() ) {
  			Point2D_F64 t = p.p2;
  			if( t.x > contRect.x1 )
  				contRect.x1 = t.x;
  			if( t.y > contRect.y1 )
  				contRect.y1 = t.y;
  			if( t.x < contRect.x0 )
  				contRect.x0 = t.x;
  			if( t.y < contRect.y0 )
  				contRect.y0 = t.y;
  		}
  		containment = contRect.area()/imageArea;
  	}
docs: Computes an axis-aligned rectangle that contains all the inliers.  It then computes the area contained in
  that rectangle to the total area of the image
  
  @param imageArea width*height