docs: public static double meanDiffSq(GrayF32 imgA, GrayF32 imgB ) {
  		InputSanityCheck.checkSameShape(imgA,imgB);
  		if(BoofConcurrency.USE_CONCURRENT) {
  			return ImplImageStatistics_MT.meanDiffSq(imgA.data,imgA.startIndex,imgA.stride, imgB.data,imgB.startIndex,imgB.stride,imgA.height, imgA.width);
  		} else {
  			return ImplImageStatistics.meanDiffSq(imgA.data,imgA.startIndex,imgA.stride, imgB.data,imgB.startIndex,imgB.stride,imgA.height, imgA.width);
  		}
  	}