public DepthImage() {
		blurAtInfinity = Double.NaN;
		focalDistance = Double.NaN;
		focalPointX = Double.NaN;
		focalPointY = Double.NaN;
		depthFormat = null;
		depthMime = null;
		depthNear = Double.NaN;
		depthFar = Double.NaN;
		depthMapImage = null;
		colourMime = null;
		originalColorImage = null;
	}