fixed several test failures; currently 9 out of 73 tests fail

modules/features2d/test/test_orb.cpp

@@ -47,9 +47,7 @@ using namespace cv;
 
 TEST(Features2D_ORB, _1996)
 {
-    Ptr<FeatureDetector> fd = ORB::create();
-    fd->set("nFeatures", 10000);//setting a higher maximum to make effect of threshold visible
-    fd->set("fastThreshold", 20);//more features than the default
+    Ptr<FeatureDetector> fd = ORB::create(10000, 1.2f, 8, 31, 0, 2, ORB::HARRIS_SCORE, 31, 20);
     Ptr<DescriptorExtractor> de = fd;
 
     Mat image = imread(string(cvtest::TS::ptr()->get_data_path()) + "shared/lena.png");