calculateModuleSize(topLeft, topRight, bottomLeft) {
			// Take the average
			return (this.calculateModuleSizeOneWay(topLeft, topRight) +
				this.calculateModuleSizeOneWay(topLeft, bottomLeft)) / 2.0;
		}
<p>Computes an average estimated module size based on estimated derived from the positions
of the three finder patterns.</p>

@param topLeft detected top-left finder pattern center
@param topRight detected top-right finder pattern center
@param bottomLeft detected bottom-left finder pattern center
@return estimated module size