code: private boolean checkSideSize( Polygon2D_F64 p ) {
  		double max=0,min=Double.MAX_VALUE;
  
  		for (int i = 0; i < p.size(); i++) {
  			double l = p.getSideLength(i);
  			max = Math.max(max,l);
  			min = Math.min(min,l);
  		}
  
  		// See if a side is too small to decode
  		if( min < 10 )
  			return false;
  
  		// see if it's under extreme perspective distortion and unlikely to be readable
  		return !(min / max < thresholdSideRatio);
  	}
docs: Sanity check the polygon based on the size of its sides to see if it could be a fiducial that can
  be decoded