From 0b3dbdd4b3395674fe9d05162ab916b83e683559 Mon Sep 17 00:00:00 2001
From: Alexander Lyulkov <alexander.lyulkov@opencv.ai>
Date: Thu, 25 Jul 2024 16:47:41 +0300
Subject: [PATCH] Added Java ORB test

---
 .../java/test/ORBFeatureDetectorTest.java     | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/modules/features2d/misc/java/test/ORBFeatureDetectorTest.java b/modules/features2d/misc/java/test/ORBFeatureDetectorTest.java
index 7399253af6..2cd9977fb2 100644
--- a/modules/features2d/misc/java/test/ORBFeatureDetectorTest.java
+++ b/modules/features2d/misc/java/test/ORBFeatureDetectorTest.java
@@ -1,5 +1,13 @@
 package org.opencv.test.features2d;
 
+import org.junit.Assert;
+import org.opencv.core.CvType;
+import org.opencv.core.KeyPoint;
+import org.opencv.core.Mat;
+import org.opencv.core.MatOfKeyPoint;
+import org.opencv.core.Scalar;
+import org.opencv.features2d.Features2d;
+import org.opencv.features2d.ORB;
 import org.opencv.test.OpenCVTestCase;
 
 public class ORBFeatureDetectorTest extends OpenCVTestCase {
@@ -36,4 +44,35 @@ public class ORBFeatureDetectorTest extends OpenCVTestCase {
         fail("Not yet implemented");
     }
 
+    public void testDetectTwoPoints() {
+        Mat img = new Mat(256,256, CvType.CV_8UC3, new Scalar(0,0,0));
+        img.put(35, 40, 255,255, 255);
+        img.put(152, 98, 200,0, 0);
+
+        MatOfKeyPoint keypoints = new MatOfKeyPoint();
+        ORB orb = ORB.create();
+        Mat descriptors = new Mat();
+        orb.detectAndCompute(img, new Mat(), keypoints, descriptors);
+
+        KeyPoint[] keypointsArray = keypoints.toArray();
+        assertEquals(2, keypointsArray.length);
+
+        long x1 = Math.round(keypointsArray[0].pt.x);
+        long y1 = Math.round(keypointsArray[0].pt.y);
+        long x2 = Math.round(keypointsArray[1].pt.x);
+        long y2 = Math.round(keypointsArray[1].pt.y);
+
+        if (x2 > x1) {
+            assertEquals(40, x1);
+            assertEquals(35, y1);
+            assertEquals(98, x2);
+            assertEquals(152, y2);
+        } else {
+            assertEquals(40, x2);
+            assertEquals(35, y2);
+            assertEquals(98, x1);
+            assertEquals(152, y1);
+        }
+    }
+
 }