// exploitGenericDescriptorMatcher_clear.cpp : R\[ AvP[ṼGg |Cg`܂B

//

#include "StdAfx.h"

// std C++

#include        <stdexcept>

#include        <vector>

// OCV

#include        <opencv2/core/core.hpp>

#include        <opencv2/highgui/highgui.hpp>

#include        <opencv2/features2d/features2d.hpp>

int main(int argc, char* argv[])

{

        if(argc < 2)

                throw std::domain_error("too few arguments");

        std::vector<cv::Mat> image;

        for(int i = 1; i < argc; i++)

                image.push_back(cv::imread(argv[i], 0));

#define                OCTAVE                        4

#define                OCTAVE_LAYER        2

        cv::Ptr<cv::FeatureDetector> fd(new cv::SurfFeatureDetector(500, OCTAVE, OCTAVE_LAYER));

        std::vector<std::vector<cv::KeyPoint>> kp;

        fd->detect(image, kp);

        cv::Ptr<cv::GenericDescriptorMatcher> dm(new cv::VectorDescriptorMatcher(

                new cv::SurfDescriptorExtractor(OCTAVE, OCTAVE_LAYER),

                new cv::BruteForceMatcher<cv::L2<float>>));

        dm->add(image, kp);

#ifndef        HACK_GenericDescriptorMatcher_clear

        dm->clear();

#else        //!HACK_GenericDescriptorMatcher_clear

        dm = new cv::VectorDescriptorMatcher(

                new cv::SurfDescriptorExtractor(OCTAVE, OCTAVE_LAYER),

                new cv::BruteForceMatcher<cv::L2<float>>);

#endif        //!HACK_GenericDescriptorMatcher_clear

        dm->add(image, kp);        //!!

        return 0;

}