nyarmatchpatt_color_without_pca.java

java 版的 ARToolkit

/* 
 * PROJECT: NyARToolkit
 * --------------------------------------------------------------------------------
 * This work is based on the original ARToolKit developed by
 *   Hirokazu Kato
 *   Mark Billinghurst
 *   HITLab, University of Washington, Seattle
 * http://www.hitl.washington.edu/artoolkit/
 *
 * The NyARToolkit is Java version ARToolkit class library.
 * Copyright (C)2008 R.Iizuka
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this framework; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * For further information please contact.
 *	http://nyatla.jp/nyatoolkit/
 *	<airmail(at)ebony.plala.or.jp>
 * 
 */
package jp.nyatla.nyartoolkit.core.match;

import jp.nyatla.nyartoolkit.NyARException;
import jp.nyatla.nyartoolkit.core.*;
import jp.nyatla.nyartoolkit.core.pickup.INyARColorPatt;

/**
 * AR_TEMPLATE_MATCHING_COLORかつAR_MATCHING_WITHOUT_PCAと同等のルールで マーカーを評価します。
 * 
 */
public class NyARMatchPatt_Color_WITHOUT_PCA implements INyARMatchPatt
{
	private int[][][] input = new int[1][1][3];

	private double datapow;

	private int width = 1;

	private int height = 1;

	private double cf = 0;

	private int dir = 0;

	public double getConfidence()
	{
		return cf;
	}

	public int getDirection()
	{
		return dir;
	}

	/**
	 * input配列サイズを必要に応じて再アロケートする。
	 * 
	 * @param i_width
	 * @param i_height
	 */
	private void reallocInputArray(int i_width, int i_height)
	{
		if (this.input.length < i_height || this.input[0].length < i_width) {
			// 配列が十分なサイズでなければ取り直す
			this.input = new int[i_height][i_width][3];
		}
		this.height = i_height;
		this.width = i_width;
	}

	public boolean setPatt(INyARColorPatt i_target_patt) throws NyARException
	{
		int i, k;
		int[][][] data, linput;

		// input配列のサイズとwhも更新// input=new int[height][width][3];
		reallocInputArray(i_target_patt.getWidth(), i_target_patt.getHeight());
		int lwidth = this.width;
		int lheight = this.height;
		linput = this.input;
		data = i_target_patt.getPatArray();

		int sum = 0, l_ave = 0, w_sum;
		int[][] data_i, input_i;
		int[] data_i_k, input_i_k;
		for (i = lheight - 1; i >= 0; i--) {// <Optimize/>for(int i=0;i<height;i++) {
			//for(int i=0;i<Config.AR_PATT_SIZE_Y;i++){
			data_i = data[i];
			for (k = lwidth - 1; k >= 0; k--) {// <Optimize/>for(int
												// i2=0;i2<Config.AR_PATT_SIZE_X;i2++){
				// <Optimize/>l_ave +=(255-data[i][i2][0])+(255-data[i][i2][1])+(255-data[i][i2][2]);
				data_i_k = data_i[k];
				l_ave += 255 * 3 - data_i_k[0] - data_i_k[1] - data_i_k[2];
			}
		}
		l_ave /= (lheight * lwidth * 3);
		for (i = lheight - 1; i >= 0; i--) {// for(i=0;i<height;i++){//for(int i=0;i<Config.AR_PATT_SIZE_Y;i++){
			input_i = linput[i];
			data_i = data[i];
			for (k = lwidth - 1; k >= 0; k--) {// for(i2=0;i2<width;i2++){//for(int i2=0;i2<Config.AR_PATT_SIZE_X;i2++){
				// <Optimize>
				// for(int i3=0;i3<3;i3++){
				// input[i][i2][i3] = (255-data[i][i2][i3]) - l_ave;
				// sum += input[i][i2][i3]*input[i][i2][i3];
				// }
				data_i_k = data_i[k];
				input_i_k = input_i[k];
				w_sum = (255 - data_i_k[0]) - l_ave;
				input_i_k[0] = w_sum;
				sum += w_sum * w_sum;

				w_sum = (255 - data_i_k[1]) - l_ave;
				input_i_k[1] = w_sum;
				sum += w_sum * w_sum;

				w_sum = (255 - data_i_k[2]) - l_ave;
				input_i_k[2] = w_sum;
				sum += w_sum * w_sum;
				// </Optimize>
			}
		}
		datapow = Math.sqrt((double) sum);
		if (datapow == 0.0) {
			return false;// throw new NyARException();
			// dir.set(0);//*dir = 0;
			// cf.set(-1.0);//*cf = -1.0;
			// return -1;
		}
		return true;
	}

	/**
	 * public int pattern_match(short[][][] data,IntPointer dir,DoublePointer
	 * cf)
	 * 
	 */
	public void evaluate(NyARCode i_code)
	{
		int[][][][] pat = i_code.getPat();
		double[] patpow = i_code.getPatPow();
		int res = -1;
		double max = 0.0;
		int[][][] pat_j, linput;
		int[][] pat_j_i, input_i;
		int[] pat_j_i_k, input_i_k;
		int l_width = this.width;
		int l_height = this.height;
		linput = this.input;
		for (int j = 0; j < 4; j++) {
			int sum = 0;
			pat_j = pat[j];
			for (int i = l_height - 1; i >= 0; i--) {// for(int i=0;i<Config.AR_PATT_SIZE_Y;i++){
				input_i = linput[i];
				pat_j_i = pat_j[i];
				for (int k = l_width - 1; k >= 0; k--) {
					pat_j_i_k = pat_j_i[k];
					input_i_k = input_i[k];
					// for(int i3=0;i3<3;i3++){
					sum += input_i_k[0] * pat_j_i_k[0];// sum +=input[i][i2][i3]*pat[k][j][i][i2][i3];
					sum += input_i_k[1] * pat_j_i_k[1];// sum +=input[i][i2][i3]*pat[k][j][i][i2][i3];
					sum += input_i_k[2] * pat_j_i_k[2];// sum +=input[i][i2][i3]*pat[k][j][i][i2][i3];
					// }
				}
			}
			double sum2 = sum / patpow[j] / datapow;// sum2 = sum / patpow[k][j]/ datapow;
			if (sum2 > max) {
				max = sum2;
				res = j;
			}
		}
		dir = res;
		cf = max;
	}
}