diff --git a/gs-cv/src/main/java/org/genericsystem/cv/Svd.java b/gs-cv/src/main/java/org/genericsystem/cv/Svd.java
index 842e996b4..ed1591fa7 100644
--- a/gs-cv/src/main/java/org/genericsystem/cv/Svd.java
+++ b/gs-cv/src/main/java/org/genericsystem/cv/Svd.java
@@ -98,7 +98,7 @@ public static List<Point3> solve(List<Point> srcPts, int[][] rects) {
 
 		Mat eigenValues = new Mat();
 		Mat eigenVectors = new Mat();
-		Core.eigenNonSymmetric(M, eigenValues, eigenVectors);
+		Core.eigen(M, eigenValues, eigenVectors);
 		int minIndex = -1;
 		for (int i = eigenValues.rows() - 1; i >= 0; i--) {
 			if (eigenValues.get(i, 0)[0] > Precision.EPSILON) {
diff --git a/gs-cv/src/main/java/org/genericsystem/cv/application/RadonTransformDemo2.java b/gs-cv/src/main/java/org/genericsystem/cv/application/RadonTransformDemo2.java
index 5c6bea979..a7b93de34 100644
--- a/gs-cv/src/main/java/org/genericsystem/cv/application/RadonTransformDemo2.java
+++ b/gs-cv/src/main/java/org/genericsystem/cv/application/RadonTransformDemo2.java
@@ -1,16 +1,5 @@
 package org.genericsystem.cv.application;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Set;
-import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.TimeUnit;
-import java.util.stream.Collectors;
-
 import org.genericsystem.cv.AbstractApp;
 import org.genericsystem.cv.Img;
 import org.genericsystem.cv.utils.NativeLibraryLoader;
@@ -23,6 +12,17 @@
 import org.opencv.core.Size;
 import org.opencv.imgproc.Imgproc;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
 import javafx.application.Platform;
 import javafx.scene.image.Image;
 import javafx.scene.image.ImageView;
@@ -66,7 +66,7 @@ private void startTimer() {
 
 	@Override
 	protected void fillGrid(GridPane mainGrid) {
-		double displaySizeReduction = 1.5;
+		double displaySizeReduction = 1;
 		for (int col = 0; col < imageViews.length; col++)
 			for (int row = 0; row < imageViews[col].length; row++) {
 				ImageView imageView = new ImageView();
@@ -135,7 +135,7 @@ private Image[] doWork() {
 		adaptive.release();
 		ref = trace("Adaptive FHT", ref);
 
-		List<HoughTrajectStep> magnitudes = RadonTransform.bestTrajectFHT(houghTransform, 11, -50);
+		List<HoughTrajectStep> magnitudes = RadonTransform.bestTrajectFHT(houghTransform, 11, -1);
 		// for (int y = 0; y < magnitudes.size(); y++) {
 		// if (magnitudes.get(y).magnitude <= 1)
 		// for (int end = y + 1; end < magnitudes.size(); end++) {
diff --git a/gs-cv/src/main/java/org/genericsystem/cv/application/RadonTransformDemo3.java b/gs-cv/src/main/java/org/genericsystem/cv/application/RadonTransformDemo3.java
index f084a8bce..4ac0ea7a8 100644
--- a/gs-cv/src/main/java/org/genericsystem/cv/application/RadonTransformDemo3.java
+++ b/gs-cv/src/main/java/org/genericsystem/cv/application/RadonTransformDemo3.java
@@ -1,13 +1,5 @@
 package org.genericsystem.cv.application;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Iterator;
-import java.util.List;
-import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.TimeUnit;
-import java.util.stream.Collectors;
-
 import org.genericsystem.cv.AbstractApp;
 import org.genericsystem.cv.Img;
 import org.genericsystem.cv.application.GeneralInterpolator.OrientedPoint;
@@ -20,6 +12,14 @@
 import org.opencv.core.Size;
 import org.opencv.imgproc.Imgproc;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
 import javafx.application.Platform;
 import javafx.scene.image.Image;
 import javafx.scene.image.ImageView;
@@ -123,8 +123,8 @@ private Image[] doWork() {
 		hHoughs.stream().forEach(projectionMap -> Core.normalize(projectionMap, projectionMap, 0, 1, Core.NORM_MINMAX));
 		ref = trace("Compute FHT", ref);
 
-		List<List<HoughTrajectStep>> vHoughTrajs = vHoughs.stream().map(projectionMap -> RadonTransform.bestTrajectFHT(projectionMap, 11, -10)).collect(Collectors.toList());
-		List<List<HoughTrajectStep>> hHoughTrajs = hHoughs.stream().map(projectionMap -> RadonTransform.bestTrajectFHT(projectionMap, 11, -10)).collect(Collectors.toList());
+		List<List<HoughTrajectStep>> vHoughTrajs = vHoughs.stream().map(projectionMap -> RadonTransform.bestTrajectFHT(projectionMap, 11, -0.1)).collect(Collectors.toList());
+		List<List<HoughTrajectStep>> hHoughTrajs = hHoughs.stream().map(projectionMap -> RadonTransform.bestTrajectFHT(projectionMap, 11, -0.1)).collect(Collectors.toList());
 		ref = trace("Compute trajects", ref);
 
 		List<OrientedPoint> fhtHorizontals = new ArrayList<>();