#pragma once

#include <opencv2/opencv.hpp> 
#include <opencv2/xfeatures2d.hpp>  
#include <opencv2/xfeatures2d/nonfree.hpp>
#include <opencv2/features2d/features2d.hpp>

#include <iostream>

using namespace std;
using namespace cv;
using namespace cv::xfeatures2d;

Mat Conv2(const Mat &img, const Mat &ikernel);

void GaussianSmooth(Mat src, Mat dst, float sigma);

void ORBMatch(Mat img1, Mat img2, vector<KeyPoint>& keypoints1, vector<KeyPoint>& keypoints2,
	          vector<DMatch>& bestMatches);

void SURFMatch(Mat img1, Mat img2, vector<KeyPoint>& keypoints1, vector<KeyPoint>& keypoints2,
	           vector<DMatch>& bestMatches);

void SIFTMatch(Mat img1, Mat img2, vector<KeyPoint>& keypoints1, vector<KeyPoint>& keypoints2,
	           vector<DMatch>& bestMatches);


vector<DMatch> RatioTest(vector<vector<DMatch>> matches12, double ratio);

vector<DMatch> SymmetricTest(vector<DMatch> goodMatches1, vector<DMatch> goodMatches2);

vector<DMatch> FilterDistance(Mat descriptors, vector<DMatch> matches);