Optimizing pairs generation (d8f3ec21) · Commits · Elphel / imagej-elphel

src/main/java/com/elphel/imagej/orthomosaic/ComboMatch.java

+66 −28

Original line number	Original line	Diff line number	Diff line
	@@ -2,6 +2,7 @@ package com.elphel.imagej.orthomosaic;

	import java.awt.Point;		import java.awt.Point;
	import java.awt.Rectangle;		import java.awt.Rectangle;
			import java.io.File;
	import java.io.IOException;		import java.io.IOException;
	import java.text.SimpleDateFormat;		import java.text.SimpleDateFormat;
	import java.time.LocalDateTime;		import java.time.LocalDateTime;
	@@ -48,6 +49,13 @@ public class ComboMatch {
	public static Properties [] imp_prop; // = new Properties[2];		public static Properties [] imp_prop; // = new Properties[2];
	public static int gpu_max_width= 4096;		public static int gpu_max_width= 4096;
	public static int gpu_max_height= 4096;		public static int gpu_max_height= 4096;
			public static String [] FILES_LISTS_PATHS = {
			"/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_sep12-13_50-25-50-75-100m",
			"/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_19_sep13_25-50-75-100m",
			"/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_nov3_50-75",
			"/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_sep12-50m",
			"/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_sep12-13_50-25-50-75-100m-SUBSET"};


	public static boolean openTestPairGps(		public static boolean openTestPairGps(
	CLTParameters clt_parameters,		CLTParameters clt_parameters,
	@@ -110,13 +118,9 @@ public class ComboMatch {
	// String orthoMapsCollection_path = "/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_10_short.data";		// String orthoMapsCollection_path = "/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_10_short.data";
	// String files_list_path = "/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_19_sep13_25-50-75-100m.list";		// String files_list_path = "/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_19_sep13_25-50-75-100m.list";
	// String orthoMapsCollection_path = "/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_19_sep13_25-50-75-100m.data";		// String orthoMapsCollection_path = "/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_19_sep13_25-50-75-100m.data";
	String [] files_lists_paths = {		// String [] files_lists_paths = FILES_LISTS_PATHS;
	"/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_sep12-13_50-25-50-75-100m",
	"/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_19_sep13_25-50-75-100m",		// int default_list_choice = 2; // files_lists_paths.length-1;
	"/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_nov3_50-75",
	"/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_sep12-50m",
	"/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_sep12-13_50-25-50-75-100m-SUBSET"};
	int default_list_choice = 0; // files_lists_paths.length-1;
	// String files_list_path = "/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_nov3_50-75.list";		// String files_list_path = "/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_nov3_50-75.list";
	// String orthoMapsCollection_path = "/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_nov3_50-75.data";		// String orthoMapsCollection_path = "/media/elphel/SSD3-4GB/lwir16-proc/ortho_videos/maps_nov3_50-75.data";
	//maps_nov3_50-75		//maps_nov3_50-75
	@@ -155,7 +159,8 @@ public class ComboMatch {
	int gpu_height= clt_parameters.imp.rln_gpu_height; // 3008;		int gpu_height= clt_parameters.imp.rln_gpu_height; // 3008;
	int zoom_lev = -3; // 0; // +1 - zoom in twice, -1 - zoom out twice		int zoom_lev = -3; // 0; // +1 - zoom in twice, -1 - zoom out twice
	boolean show_combo = false; // true;		boolean show_combo = false; // true;
	boolean create_overlaps = false;		boolean create_pairwise_matches = false;
			boolean create_pairwise_affines = false;
	boolean equalize_overlaps = false;		boolean equalize_overlaps = false;
	boolean create_map = false;		boolean create_map = false;
	boolean create_equalize = false;		boolean create_equalize = false;
	@@ -180,7 +185,7 @@ public class ComboMatch {
	String [] suffixes_bl_bc= {"","-BL","-BC"};		String [] suffixes_bl_bc= {"","-BL","-BC"};
	boolean log_append = clt_parameters.imp.pwise_log_append;		boolean log_append = clt_parameters.imp.pwise_log_append;
	String log_path = clt_parameters.imp.pwise_log_path;		String log_path = clt_parameters.imp.pwise_log_path;
			String omtch_img_set = clt_parameters.imp.omtch_img_set;

	int suffix_bc_bl_indx = 2;		int suffix_bc_bl_indx = 2;
	if (!use_marked_image) {		if (!use_marked_image) {
	@@ -191,9 +196,9 @@ public class ComboMatch {
	pattern_match = false;		pattern_match = false;
	}		}


	GenericJTabbedDialog gd = new GenericJTabbedDialog("Set image pair",1200,800);		GenericJTabbedDialog gd = new GenericJTabbedDialog("Set image pair",1200,800);
	gd.addChoice ("Files list/data path (w/o extension):", files_lists_paths, files_lists_paths[default_list_choice]);		// gd.addChoice ("Files list/data path (w/o extension):", FILES_LISTS_PATHS, FILES_LISTS_PATHS[default_list_choice]);
			gd.addChoice ("Files list/data path (w/o extension):", FILES_LISTS_PATHS, omtch_img_set);
	gd.addCheckbox ("Use saved maps collection", use_saved_collection, "If false - use files list.");		gd.addCheckbox ("Use saved maps collection", use_saved_collection, "If false - use files list.");
	gd.addCheckbox ("Save maps collection", save_collection, "Save maps collection to be able to restore.");		gd.addCheckbox ("Save maps collection", save_collection, "Save maps collection to be able to restore.");
	gd.addCheckbox ("Process correlations", process_correlation, "false to skip to just regenerate new save file.");		gd.addCheckbox ("Process correlations", process_correlation, "false to skip to just regenerate new save file.");
	@@ -230,7 +235,8 @@ public class ComboMatch {
	// gd.addCheckbox ("Show transformation centers", show_centers, "Mark verticals from the UAS on the ground.");		// gd.addCheckbox ("Show transformation centers", show_centers, "Mark verticals from the UAS on the ground.");
	// gd.addCheckbox ("Show statistics for ortho images", show_map_stats, "Generate and show statistics for ortho maps.");		// gd.addCheckbox ("Show statistics for ortho images", show_map_stats, "Generate and show statistics for ortho maps.");
	gd.addCheckbox ("Show combo maps/stats", show_combo, "Generate/save combo maps and stats.");		gd.addCheckbox ("Show combo maps/stats", show_combo, "Generate/save combo maps and stats.");
	gd.addCheckbox ("Create overlap pairs", create_overlaps, "Create scene pairs overlaps.");		gd.addCheckbox ("Create overlap pairs", create_pairwise_matches, "Create scene pairs overlaps.");
			gd.addCheckbox ("Create pairwise affines", create_pairwise_affines, "Create affines for scene pairs.");
	gd.addCheckbox ("Equalize overlap pairs", equalize_overlaps, "Equalize intensities in overlaps.");		gd.addCheckbox ("Equalize overlap pairs", equalize_overlaps, "Equalize intensities in overlaps.");
	gd.addCheckbox ("Create map", create_map, "Create combined map from pairwise matches.");		gd.addCheckbox ("Create map", create_map, "Create combined map from pairwise matches.");
	gd.addCheckbox ("Equalize intensities", create_equalize, "Create map intensities equalization from pairwise matches.");		gd.addCheckbox ("Equalize intensities", create_equalize, "Create map intensities equalization from pairwise matches.");
	@@ -257,9 +263,14 @@ public class ComboMatch {
	// update_kernel_patterns		// update_kernel_patterns
	gd.showDialog();		gd.showDialog();
	if (gd.wasCanceled()) return false;		if (gd.wasCanceled()) return false;
	int choice_index = gd.getNextChoiceIndex();
	String files_list_path = files_lists_paths[choice_index]+".list";
	String orthoMapsCollection_path =files_lists_paths[choice_index]+".data";		// int choice_index = gd.getNextChoiceIndex();
			// String files_list_path = FILES_LISTS_PATHS[choice_index]+".list";
			// String orthoMapsCollection_path =FILES_LISTS_PATHS[choice_index]+".data";
			omtch_img_set = ComboMatch.FILES_LISTS_PATHS[gd.getNextChoiceIndex()];
			String files_list_path = omtch_img_set+".list";
			String orthoMapsCollection_path =omtch_img_set+".data";
	use_saved_collection = gd.getNextBoolean();		use_saved_collection = gd.getNextBoolean();
	save_collection = gd.getNextBoolean();		save_collection = gd.getNextBoolean();
	String orthoMapsCollection_savepath = save_collection?orthoMapsCollection_path:null;		String orthoMapsCollection_savepath = save_collection?orthoMapsCollection_path:null;
	@@ -289,7 +300,8 @@ public class ComboMatch {
	OrthoMap.setGPUWidthHeight(gpu_width,gpu_height);		OrthoMap.setGPUWidthHeight(gpu_width,gpu_height);

	show_combo = gd.getNextBoolean();		show_combo = gd.getNextBoolean();
	create_overlaps = gd.getNextBoolean();		create_pairwise_matches = gd.getNextBoolean();
			create_pairwise_affines = gd.getNextBoolean();
	equalize_overlaps = gd.getNextBoolean();		equalize_overlaps = gd.getNextBoolean();
	create_map = gd.getNextBoolean();		create_map = gd.getNextBoolean();
	create_equalize = gd.getNextBoolean();		create_equalize = gd.getNextBoolean();
	@@ -753,7 +765,9 @@ public class ComboMatch {
	// String [] gpu_spair = {names[gpu_ipair[0]],names[gpu_ipair[1]]};		// String [] gpu_spair = {names[gpu_ipair[0]],names[gpu_ipair[1]]};
	int [] origin = new int[2];		int [] origin = new int[2];
	if (show_combo) { // now all modes, and stats?		if (show_combo) { // now all modes, and stats?
	maps_collection.processComboMap(debugLevel);		maps_collection.processComboMap(
			clt_parameters, // CLTParameters clt_parameters,
			debugLevel);
	return true;		return true;
	}		}

	@@ -790,11 +804,22 @@ public class ComboMatch {
	orthoMapsCollection_savepath); // String orthoMapsCollection_path		orthoMapsCollection_savepath); // String orthoMapsCollection_path
	return (ok >= 0);		return (ok >= 0);
	}		}
			if (create_pairwise_matches) {
			boolean ok =maps_collection.getOverlapPairs(
			clt_parameters, // CLTParameters clt_parameters,
			orthoMapsCollection_savepath); // String orthoMapsCollection_path);
			return ok; // Just exit, do not try other commands. if (!ok) return false;
			}

	if (create_overlaps) {		if (create_pairwise_affines) {
	boolean ok =maps_collection.getIntersectedPairs(		// boolean ok =maps_collection.getIntersectedPairs(
			// clt_parameters, // CLTParameters clt_parameters,
			// orthoMapsCollection_savepath); // String orthoMapsCollection_path);

			boolean ok =maps_collection.generatePairwiseAffines(
	clt_parameters, // CLTParameters clt_parameters,		clt_parameters, // CLTParameters clt_parameters,
	orthoMapsCollection_savepath); // String orthoMapsCollection_path);		orthoMapsCollection_savepath); // String orthoMapsCollection_path);

	return ok; // Just exit, do not try other commands. if (!ok) return false;		return ok; // Just exit, do not try other commands. if (!ok) return false;
	}		}
	if (equalize_overlaps) {		if (equalize_overlaps) {
	@@ -1005,7 +1030,7 @@ public class ComboMatch {
	if (process_correlation) {		if (process_correlation) {
	if (update_match) {		if (update_match) {
	pairwiseOrthoMatch.zoom_lev = zoom_lev;		pairwiseOrthoMatch.zoom_lev = zoom_lev;
	pairwiseOrthoMatch.affine = affines[1];		pairwiseOrthoMatch.setAffine(affines[1]);
	maps_collection.ortho_maps[gpu_pair[0]].setMatch(		maps_collection.ortho_maps[gpu_pair[0]].setMatch(
	maps_collection.ortho_maps[gpu_pair[1]].getName(),		maps_collection.ortho_maps[gpu_pair[1]].getName(),
	pairwiseOrthoMatch);		pairwiseOrthoMatch);
	@@ -1272,6 +1297,13 @@ public class ComboMatch {
	}		}
	for (int i = 0; i < filenames.length; i++) {		for (int i = 0; i < filenames.length; i++) {
	maps_collection.ortho_maps[i].setFileName(filenames[i]);		maps_collection.ortho_maps[i].setFileName(filenames[i]);
			String path = maps_collection.ortho_maps[i].getPath();
			if (!(new File(path)).exists()) {
			System.out.println("updateBlBcFileNames() does not exist - fix manually: "+path);
			System.out.println("This can happen if files have different resolution for new run.");
			System.out.println("Verify path, then modify filenames[i], break at line above: 'maps_collection.ortho_maps[i].setFileName(filenames[i])'.");
			System.out.println("Reduce i by 1 and continue");
			}
	}		}
	return true;		return true;
	}		}
	@@ -1482,16 +1514,22 @@ adjusted affines[1] for a pair: 1694564291_293695/1694564778_589341
	points_xy[nn][1] = fp.ypoints[p];		points_xy[nn][1] = fp.ypoints[p];
	pair_slices[nn] = pRoi.getPointPosition(p); // works		pair_slices[nn] = pRoi.getPointPosition(p); // works
	}		}
	PairwiseOrthoMatch match= new PairwiseOrthoMatch();		// PairwiseOrthoMatch match= new PairwiseOrthoMatch();
	match.affine = new double[][] {		double [][] affine = {
	{1,0,(points_xy[1][0]-points_xy[0][0])*pix_size},		{1,0,(points_xy[1][0]-points_xy[0][0])*pix_size},
	{0,1,(points_xy[1][1]-points_xy[0][1])*pix_size}};		{0,1,(points_xy[1][1]-points_xy[0][1])*pix_size}};
			PairwiseOrthoMatch match= new PairwiseOrthoMatch(
			affine, // double [][] affine,
			new double [6][6], // double [][] jtj,
			Double.NaN, // double rms,
			zoom_level, // int zoom_lev,
			1.0); // double overlap);
	for (int n = 0; n < points_xy.length; n++) {		for (int n = 0; n < points_xy.length; n++) {
	names[n] = stack_scenes.getSliceLabel(pair_slices[n]).substring(0,17);		names[n] = stack_scenes.getSliceLabel(pair_slices[n]).substring(0,17);
	}		}
	System.out.println("names = [\""+names[0]+"\", \""+names[1]+"\"]");		System.out.println("names = [\""+names[0]+"\", \""+names[1]+"\"]");
	System.out.println("match.affine = [["+match.affine[0][0]+", "+match.affine[0][1]+", "+match.affine[0][2]+"],");		System.out.println("match.affine = [["+affine[0][0]+", "+affine[0][1]+", "+affine[0][2]+"],");
	System.out.println(" ["+match.affine[1][0]+", "+match.affine[1][1]+", "+match.affine[1][2]+"]]");		System.out.println(" ["+affine[1][0]+", "+affine[1][1]+", "+affine[1][2]+"]]");
	return match;		return match;
	}		}
	}		}

src/main/java/com/elphel/imagej/orthomosaic/OrthoMap.java

+93 −2

Original line number	Original line	Diff line number	Diff line
	@@ -216,9 +216,33 @@ public class OrthoMap implements Comparable <OrthoMap>, Serializable{
	pairwise_matches.remove(name);		pairwise_matches.remove(name);
	}		}

			public PairwiseOrthoMatch getMatch(
			String name,
			boolean with_undefined) {
			PairwiseOrthoMatch match = pairwise_matches.get(name);
			if (match == null) return null;
			if (with_undefined \|\| match.isDefined()) return match;
			return null;
			}



	public PairwiseOrthoMatch getMatch(String name) {		public PairwiseOrthoMatch getMatch(String name) {
	return pairwise_matches.get(name);		return getMatch(name, false); // old - do not count undefined
			// return pairwise_matches.get(name);
			}

			public void unsetMatches(boolean undefined_only) {
			if (undefined_only) {
			String [] matches = pairwise_matches.keySet().toArray(new String[0]);
			for (String match:matches) {
			if (!getMatch(match).isDefined()) {
			unsetMatch(match);
			}
			}
			} else {
			pairwise_matches = new HashMap<String, PairwiseOrthoMatch>();
			}
	}		}

	public int getOriginalZoomLevel() {		public int getOriginalZoomLevel() {
	@@ -480,7 +504,9 @@ public class OrthoMap implements Comparable <OrthoMap>, Serializable{
	averageImagePixel = Double.NaN; // average image pixel value (to combine with raw)		averageImagePixel = Double.NaN; // average image pixel value (to combine with raw)
	}		}

			public double getTimeStamp() {
			return ts;
			}
	public LocalDateTime getLocalDateTime() {		public LocalDateTime getLocalDateTime() {
	return dt;		return dt;
	}		}
	@@ -5244,6 +5270,71 @@ public class OrthoMap implements Comparable <OrthoMap>, Serializable{
	return pattern;		return pattern;
	}		}

			/**
			* Decomposing linear transform into rotation
			* R1={{cos(beta),sin(beta)},{-sin(beta), cos(beta)}} ,
			* non-uniform scale transform W={{w1,0}{0,w2}}, and rotation
			* R2={{cos(gamma),sin(gamma)},{-sin(gamma), cos(gamma)}}
			* A=R1WR2 using singular value decomposition
			* https://math.stackexchange.com/questions/861674/decompose-a-2d-arbitrary-transform-into-only-scaling-and-rotation
			* @param A - input 2x2 matrix
			* @return {s,beta,w,gamma,beta+gamma}
			* A = B + C
			* b00= b11; c00=-c01
			* b10=-b01; c10= c01
			*/
			public static double [] singularValueDecompose(
			double [][] A) {
			double a00=A[0][0],a01=A[0][1],a10=A[1][0],a11=A[1][1];
			double b00=(a00+a11)/2; // , b11 = b00;
			double c00=(a00-a11)/2; //, c11 =-c00;
			double b01=(a01-a10)/2; //, b10 =-b01;
			double c01=(a01+a10)/2; //, c10 = c01;
			double w1_p_w2_2= Math.sqrt(b00b00+b01b01);
			double w1_m_w2_2= Math.sqrt(c00c00+c01c01);
			double w1 = w1_p_w2_2 + w1_m_w2_2;
			double w2 = w1_p_w2_2 - w1_m_w2_2;
			double g_p_b = Math.atan2(b01, b00);
			double g_m_b = Math.atan2(c01, c00);
			double gamma = (g_p_b + g_m_b)/2;
			double beta = (g_p_b - g_m_b)/2;
			return new double [] {beta,w1,w2,gamma,g_p_b};
			}
			/**
			* Use singular value decomposition and then split scaling {{w1,0},{0,w1}}
			* into overall scaling caused by zoom != 1.0 because of altitude error
			* and unidirectional scaling caused by tilted projection plane. As the
			* input linear transformation matrix converts ground coordinates to source
			* image coordinates, the scale in the tilt direction is > than scale in the
			* perpendicular direction (tilt axis).
			* Matrix R1 is additionally rotated by PI/2 if needed so W={{w1,0},{0,w2}}
			* has w2>=w1 and W={{s,0},{0,s/t}}, where t <= 1.0 and equals to cos(tilt)
			*
			* @param A - linear transformation matrix from rectified ground coordinates
			* to source image coordinates. OK to use 2x3 affine matrix,extra
			* components will be ignored.
			* @return {beta, s, t, beta+gamma}, beta+gamma - total rotation
			*/
			public static double [] singularValueDecomposeScaleTilt(
			double [][] A) {
			double [] svd=singularValueDecompose(A);
			double w1 = svd[1], w2 = svd[2], beta=svd[0], g_p_b=svd[4];

			// considering tilt in y direction, it should have higher scale
			// (and source image coordinates), while X should correspond to
			// the axis of rotation, and scale is just scale caused by error in
			// altitude.
			double s = Math.min(w1, w2);
			double t = w1/w2; // <=1.0, ==cos(tilt)
			if (w1 > w2) { // rotate tilt by PI/2
			t = w2/w1;
			beta += Math.PI/2;
			if (beta > Math.PI) {
			beta -= 2* Math.PI;
			}
			}
			return new double [] {beta, s,t, g_p_b};
			}

src/main/java/com/elphel/imagej/orthomosaic/OrthoMapsCollection.java

+853 −11

File changed.

Preview size limit exceeded, changes collapsed.

src/main/java/com/elphel/imagej/orthomosaic/PairsGraph.java

0 → 100644

+597 −0

File added.

Preview size limit exceeded, changes collapsed.

src/main/java/com/elphel/imagej/orthomosaic/PairwiseOrthoMatch.java

+17 −5

Original line number	Original line	Diff line number	Diff line
	@@ -9,7 +9,7 @@ import Jama.Matrix;

	public class PairwiseOrthoMatch implements Serializable {		public class PairwiseOrthoMatch implements Serializable {
	private static final long serialVersionUID = 1L;		private static final long serialVersionUID = 1L;
	public double [][] affine = new double[2][3];		private double [][] affine = new double[2][3];
	public transient double [][] jtj = new double [6][6];		public transient double [][] jtj = new double [6][6];
	public int zoom_lev;		public int zoom_lev;
	public double rms = Double.NaN;		public double rms = Double.NaN;
	@@ -17,12 +17,14 @@ public class PairwiseOrthoMatch implements Serializable {
	public transient double overlap = 0.0;		public transient double overlap = 0.0;
	public transient double [] equalize1to0 = {1,0}; // value1 = equalize2to1[0]*value2+equalize2to1[1]		public transient double [] equalize1to0 = {1,0}; // value1 = equalize2to1[0]*value2+equalize2to1[1]

	public PairwiseOrthoMatch() {		// public PairwiseOrthoMatch() {}

	}
	public double getOverlap() {		public double getOverlap() {
	return overlap;		return overlap;
	}		}
			public void setOverlap(double overlap) {
			this.overlap =overlap;
			}

	public PairwiseOrthoMatch(		public PairwiseOrthoMatch(
	double [][] affine,		double [][] affine,
	double [][] jtj,		double [][] jtj,
	@@ -36,6 +38,9 @@ public class PairwiseOrthoMatch implements Serializable {
	this.overlap = overlap;		this.overlap = overlap;
	}		}

			public boolean isDefined() {
			return affine != null;
			}
	public double [] getEqualize2to1() {		public double [] getEqualize2to1() {
	return equalize1to0;		return equalize1to0;
	}		}
	@@ -52,7 +57,7 @@ public class PairwiseOrthoMatch implements Serializable {
	}		}

	public PairwiseOrthoMatch clone() {		public PairwiseOrthoMatch clone() {
	double [][] affine = {this.affine[0].clone(),this.affine[1].clone()};		double [][] affine = (this.affine==null) ? null: (new double [][] {this.affine[0].clone(),this.affine[1].clone()});
	double [][] jtj = new double [this.jtj.length][];		double [][] jtj = new double [this.jtj.length][];
	for (int i = 0; i < this.jtj.length; i++) {		for (int i = 0; i < this.jtj.length; i++) {
	jtj[i] = this.jtj[i].clone();		jtj[i] = this.jtj[i].clone();
	@@ -221,9 +226,16 @@ public class PairwiseOrthoMatch implements Serializable {
	}		}

	public double [][] getAffine(){		public double [][] getAffine(){
			if (affine == null) {
			return new double [][] {{1,0,0},{0,1,0}};
			}
	return affine;		return affine;
	}		}

			public void setAffine(double [][] affine) {
			this.affine= affine;
			}

	private void writeObject(ObjectOutputStream oos) throws IOException {		private void writeObject(ObjectOutputStream oos) throws IOException {
	oos.defaultWriteObject();		oos.defaultWriteObject();
	for (int i = 0; i < jtj.length; i++) {		for (int i = 0; i < jtj.length; i++) {

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