origHistogram[i] = 0; histogram[i] = 0;
queryHistogram[i] = 0; targetHistogram[i] = 0;
	public OH3() {		origHistogram = new int[256];		histogram = new int[256];		for (int i = 0; i < 256; i++) {			origHistogram[i] = 0;			histogram[i] = 0;		}	}