Merge pull request #769 from apavlenko:fix_2901

modules/java/android_test/CMakeLists.txt

@@ -14,7 +14,7 @@ ocv_list_filterout(opencv_test_java_files ".svn")
 
 # copy sources out from the build tree
 set(opencv_test_java_file_deps "")
-foreach(f ${opencv_test_java_files} ${ANDROID_MANIFEST_FILE})
+foreach(f ${opencv_test_java_files} ${ANDROID_MANIFEST_FILE} ".classpath" ".project")
   add_custom_command(
       OUTPUT "${opencv_test_java_bin_dir}/${f}"
       COMMAND ${CMAKE_COMMAND} -E copy "${CMAKE_CURRENT_SOURCE_DIR}/${f}" "${opencv_test_java_bin_dir}/${f}"

modules/java/android_test/src/org/opencv/test/features2d/BruteForceHammingDescriptorMatcherTest.java

 package org.opencv.test.features2d;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
@@ -204,7 +205,17 @@ public class BruteForceHammingDescriptorMatcherTest extends OpenCVTestCase {
     }
 
     public void testRadiusMatchMatListOfListOfDMatchFloat() {
-        fail("Not yet implemented");
+        Mat train = getTrainDescriptors();
+        Mat query = getQueryDescriptors();
+        ArrayList<MatOfDMatch> matches = new ArrayList<MatOfDMatch>();
+
+        matcher.radiusMatch(query, train, matches, 50.f);
+
+        assertEquals(matches.size(), 4);
+        assertTrue(matches.get(0).empty());
+        assertMatEqual(matches.get(1), new MatOfDMatch(truth[1]), EPS);
+        assertMatEqual(matches.get(2), new MatOfDMatch(truth[2]), EPS);
+        assertTrue(matches.get(3).empty());
     }
 
     public void testRadiusMatchMatListOfListOfDMatchFloatListOfMat() {

modules/java/generator/src/java/core+MatOfDMatch.java

@@ -16,8 +16,8 @@ public class MatOfDMatch extends Mat {
 
     protected MatOfDMatch(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
-            throw new IllegalArgumentException("Incomatible Mat");
+        if( !empty() && checkVector(_channels, _depth) < 0 )
+            throw new IllegalArgumentException("Incomatible Mat: " + toString());
         //FIXME: do we need release() here?
     }
 
@@ -27,8 +27,8 @@ public class MatOfDMatch extends Mat {
 
     public MatOfDMatch(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
-            throw new IllegalArgumentException("Incomatible Mat");
+        if( !empty() && checkVector(_channels, _depth) < 0 )
+            throw new IllegalArgumentException("Incomatible Mat: " + toString());
         //FIXME: do we need release() here?
     }