docs: public static void down(GrayF32 input , int sampleWidth , GrayF32 output ) {
  		if( sampleWidth == 2 ) {
  			if(BoofConcurrency.USE_CONCURRENT ) {
  				ImplAverageDownSample2_MT.down(input, output);
  			} else {
  				ImplAverageDownSample2.down(input, output);
  			}
  		} else {
  			if(BoofConcurrency.USE_CONCURRENT ) {
  				ImplAverageDownSampleN_MT.down(input, sampleWidth, output);
  			} else {
  				ImplAverageDownSampleN.down(input, sampleWidth, output);
  			}
  		}
  	}