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#include <opencv2/opencv.hpp>
#include <opencv2/aruco.hpp>
#include <iostream>
#include <cmath>
using namespace cv;
using namespace std;
#pragma once
class CardProcessor
{
const int CV_QR_NORTH = 0;
const int CV_QR_EAST = 1;
const int CV_QR_SOUTH = 2;
const int CV_QR_WEST = 3;
private:
bool isInitialized;
Mat gray;
Mat edges;
Mat traces;
Mat qr, qr_raw, qr_gray, qr_thres;
vector<vector<Point> > contours;
vector<Vec4i> hierarchy;
vector<Point> pointsseq; //used to save the approximated sides of each contour
int mark, A, B, C, D, F, top, right, bottom, median1, median2, outlier;
float AB, BC, CA, dist, slope, areat, arear, areab, large, padding;
int align, orientation;
private:
void Initialize(Mat image);
float cv_distance(Point2f P, Point2f Q); // Get Distance between two points
float cv_lineEquation(Point2f L, Point2f M, Point2f J); // Perpendicular Distance of a Point J from line formed by Points L and M; Solution to equation of the line Val = ax+by+c
float cv_lineSlope(Point2f L, Point2f M, int& alignement); // Slope of a line by two Points L and M on it; Slope of line, S = (x1 -x2) / (y1- y2)
void cv_getVertices(vector<vector<Point> > contours, int c_id, float slope, vector<Point2f>& X);
void cv_updateCorner(Point2f P, Point2f ref, float& baseline, Point2f& corner);
void cv_updateCornerOr(int orientation, vector<Point2f> IN, vector<Point2f> &OUT);
bool getIntersectionPoint(Point2f a1, Point2f a2, Point2f b1, Point2f b2, Point2f& intersection);
float cross(Point2f v1, Point2f v2);
public:
CardProcessor();
~CardProcessor();
vector<Point> GetQRVertices(Mat image);
vector<Point> GetQRVertices4(Mat image);
vector<Point> GetArcusVertices(Mat image);
Mat ApplyHomography(Mat image,vector<Point> vertices, Size destination_size);
Rect CropRect(Rect rect, Size size);
Point GetRectCenter(Rect rect);
Scalar GetRectMeanColor(Mat image, Rect rect);
Mat GetImageRect(Mat image, Rect rect);
Mat Diff(Mat image, int k);
void DrawImage(Mat image,Mat draw, Rect rect);
void DrawHistogram(Mat image);
};
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