Question

Im trying to use NormalBayesClassifier in my code to apply bag of words. The pre-training matrix is ready and given to the trainme matrix. I am using it as follows:

NormalBayesClassifier classifier;
classifier.train(trainme, labels);

And I am getting the following error:

error C2065: 'NormalBayesClassifier' : undeclared identifier

I have added all the correct libraries and all other opencv functions work, including the features2d functions.

Here are my libraries:

#include <stdafx.h>
#include <stdlib.h>
#include <cv.hpp>
#include <cxcore.hpp>
#include <highgui.h>
#include <iostream>
#include "opencv2/nonfree/features2d.hpp"
#include "opencv2/calib3d/calib3d.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/nonfree/nonfree.hpp"
#include <fstream>
#include <windows.h>
using namespace cv;
using namespace std;

That should cover the NormalBayesClassifier function, then why am I getting this error?

Answer 1

According to the documentation, the class for the Normal Bayes Classifier is actually called CvNormalBayesClassifier.

The corresponding header file is:

#include "opencv2/ml/ml.hpp"