final float[] upscaleKernel = doDownscaling ? makeUpscaleKernel(reduceBy) : null;
final float[] upscaleKernel = doDownscaling ? makeUpscaleKernel(reduceBy) : null;
final float[] upscaleKernel = doDownscaling ? makeUpscaleKernel(reduceBy) : null;
final float[] upscaleKernel = doDownscaling ? makeUpscaleKernel(reduceBy) : null;