Merge pull request #25292 from kaingwade:features2d_parts_to_contrib

Features2d cleanup: Move several feature detectors and descriptors to opencv_contrib #25292

features2d cleanup: #24999

The PR moves KAZE, AKAZE, AgastFeatureDetector, BRISK and BOW to opencv_contrib/xfeatures2d.

Related PR: opencv/opencv_contrib#3709

samples/cpp/asift.cpp

@@ -5,6 +5,9 @@
 #include <opencv2/3d.hpp>
 #include <iostream>
 #include <iomanip>
+#ifdef HAVE_OPENCV_XFEATURES2D
+#include "opencv2/xfeatures2d.hpp"
+#endif
 
 using namespace std;
 using namespace cv;
@@ -33,7 +36,7 @@ int main(int argc, char** argv)
     vector<String> fileName;
     cv::CommandLineParser parser(argc, argv,
         "{help h ||}"
-        "{feature|brisk|}"
+        "{feature|orb|}"
         "{flann||}"
         "{maxlines|50|}"
         "{image1|aero1.jpg|}{image2|aero3.jpg|}");
@@ -88,11 +91,16 @@ int main(int argc, char** argv)
     }
     else if (feature == "brisk")
     {
-        backend = BRISK::create();
+#ifdef HAVE_OPENCV_XFEATURES2D
+        backend = xfeatures2d::BRISK::create();
         if (useFlann)
             matcher = makePtr<FlannBasedMatcher>(makePtr<flann::LshIndexParams>(6, 12, 1));
         else
             matcher = DescriptorMatcher::create("BruteForce-Hamming");
+#else
+        cout << "OpenCV is built without opencv_contrib modules. BRISK algorithm is not available!" << std::endl;
+        return -1;
+#endif
     }
     else
     {