content: //
  // This file is auto-generated. Please don't modify it!
  //
  package org.opencv.features2d;
  
  import java.util.ArrayList;
  import java.util.List;
  import org.opencv.core.Mat;
  import org.opencv.utils.Converters;
  
  // C++: class BOWTrainer
  /**
   * Abstract base class for training the *bag of visual words* vocabulary from a set of descriptors.
   *
   * For details, see, for example, *Visual Categorization with Bags of Keypoints* by Gabriella Csurka,
   * Christopher R. Dance, Lixin Fan, Jutta Willamowski, Cedric Bray, 2004. :
   */
  public class BOWTrainer {
  
      protected final long nativeObj;
      protected BOWTrainer(long addr) { nativeObj = addr; }
  
      public long getNativeObjAddr() { return nativeObj; }
  
      // internal usage only
      public static BOWTrainer __fromPtr__(long addr) { return new BOWTrainer(addr); }
  
      //
      // C++:  Mat cv::BOWTrainer::cluster(Mat descriptors)
      //
  
      /**
       * Clusters train descriptors.
       *
       *     @param descriptors Descriptors to cluster. Each row of the descriptors matrix is a descriptor.
       *     Descriptors are not added to the inner train descriptor set.
       *
       *     The vocabulary consists of cluster centers. So, this method returns the vocabulary. In the first
       *     variant of the method, train descriptors stored in the object are clustered. In the second variant,
       *     input descriptors are clustered.
       * @return automatically generated
       */
      public Mat cluster(Mat descriptors) {
          return new Mat(cluster_0(nativeObj, descriptors.nativeObj));
      }
  
  
      //
      // C++:  Mat cv::BOWTrainer::cluster()
      //
  
      public Mat cluster() {
          return new Mat(cluster_1(nativeObj));
      }
  
  
      //
      // C++:  int cv::BOWTrainer::descriptorsCount()
      //
  
      /**
       * Returns the count of all descriptors stored in the training set.
       * @return automatically generated
       */
      public int descriptorsCount() {
          return descriptorsCount_0(nativeObj);
      }
  
  
      //
      // C++:  vector_Mat cv::BOWTrainer::getDescriptors()
      //
  
      /**
       * Returns a training set of descriptors.
       * @return automatically generated
       */
      public List<Mat> getDescriptors() {
          List<Mat> retVal = new ArrayList<Mat>();
          Mat retValMat = new Mat(getDescriptors_0(nativeObj));
          Converters.Mat_to_vector_Mat(retValMat, retVal);
          return retVal;
      }
  
  
      //
      // C++:  void cv::BOWTrainer::add(Mat descriptors)
      //
  
      /**
       * Adds descriptors to a training set.
       *
       *     @param descriptors Descriptors to add to a training set. Each row of the descriptors matrix is a
       *     descriptor.
       *
       *     The training set is clustered using clustermethod to construct the vocabulary.
       */
      public void add(Mat descriptors) {
          add_0(nativeObj, descriptors.nativeObj);
      }
  
  
      //
      // C++:  void cv::BOWTrainer::clear()
      //
  
      public void clear() {
          clear_0(nativeObj);
      }
  
  
      @Override
      protected void finalize() throws Throwable {
          delete(nativeObj);
      }
  
  
  
      // C++:  Mat cv::BOWTrainer::cluster(Mat descriptors)
      private static native long cluster_0(long nativeObj, long descriptors_nativeObj);
  
      // C++:  Mat cv::BOWTrainer::cluster()
      private static native long cluster_1(long nativeObj);
  
      // C++:  int cv::BOWTrainer::descriptorsCount()
      private static native int descriptorsCount_0(long nativeObj);
  
      // C++:  vector_Mat cv::BOWTrainer::getDescriptors()
      private static native long getDescriptors_0(long nativeObj);
  
      // C++:  void cv::BOWTrainer::add(Mat descriptors)
      private static native void add_0(long nativeObj, long descriptors_nativeObj);
  
      // C++:  void cv::BOWTrainer::clear()
      private static native void clear_0(long nativeObj);
  
      // native support for java finalize()
      private static native void delete(long nativeObj);
  
  }
  