From ea6879e9a888608d1d51739dd254955858e46e88 Mon Sep 17 00:00:00 2001
From: Guillaume Courrier <guillaume.courrier@supelec.fr>
Date: Tue, 29 Oct 2019 10:41:19 +0100
Subject: [PATCH] =?UTF-8?q?D=C3=A9tection=20simple=20des=20contours?=
MIME-Version: 1.0
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---
 .gitignore           |  1 +
 opencv/detection.cpp |  8 +-----
 src/traitement.cpp   | 68 +++++++++++++++++++++++++++++++++++---------
 3 files changed, 56 insertions(+), 21 deletions(-)
 create mode 100644 .gitignore

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a01ee28
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.*.swp
diff --git a/opencv/detection.cpp b/opencv/detection.cpp
index 2ce495b..1d63fe4 100644
--- a/opencv/detection.cpp
+++ b/opencv/detection.cpp
@@ -46,15 +46,9 @@ int main(int, char**)
 		imshow("Detection", Binaire);
 		findContours(Binaire, contours, hierarchy, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_NONE);
 		Mat Dessin = Mat::zeros(X,Y, CV_8UC1);
-		unsigned int max = 0;
-		int id = 0;
 		for(numc = 0; numc<contours.size(); numc++) {
-			if (contours[numc].size() > max) {
-				max = contours[numc].size();
-				id = numc;
-			}
+			drawContours(Dessin, contours, id, 255);
 		}
-		drawContours(Dessin, contours, id, 255);
 		imshow("Contours", Dessin);
 		if(waitKey(30) == 27) {
 			break;
diff --git a/src/traitement.cpp b/src/traitement.cpp
index 6756258..2ce495b 100644
--- a/src/traitement.cpp
+++ b/src/traitement.cpp
@@ -1,24 +1,64 @@
 #include "opencv2/opencv.hpp"
 
+using namespace cv;
+using namespace std;
+
 int main(int, char**)
 {
-	cv::VideoCapture cap(0); // open the default camera
-	if(!cap.isOpened())  // check if we succeeded
+	int seuil=80;
+	char detect;
+	VideoCapture cap(0); 
+	if(!cap.isOpened())  
 		return -1;
-
-	cv::Mat edges;
-	cv::namedWindow("edges",1);
-	while(1){
-		cv::Mat frame;
-		cap >> frame; // get a new frame from camera
-		//cv::cvtColor(frame, edges, CV_BGR2GRAY);
-		//cv::GaussianBlur(edges, edges, cv::Size(7,7), 1.5, 1.5);
-		//cv::Canny(edges, edges, 0, 30, 3);
-		cv::imshow("edges", frame);
-		if(cv::waitKey(30) == 27) {
+	namedWindow("Image",1);
+	namedWindow("Detection",1);
+	namedWindow("Contours",1);
+	for(;;) {
+		int X,Y,DIM,index,indexNB;
+		unsigned int numc;
+		uchar R,G,B;
+		vector<vector<Point> > contours;
+		vector<Vec4i> hierarchy;
+		Mat frame;
+		cap >> frame;
+		X=frame.rows;
+		Y=frame.cols;
+		Mat Binaire(X,Y,CV_8UC1);
+		imshow("Image", frame);
+		GaussianBlur(frame, frame, Size(7,7), 1.5, 1.5);
+		X=frame.rows;
+		Y=frame.cols;
+		DIM=frame.channels();
+		for (index=0,indexNB=0;index<DIM*X*Y;index+=DIM,indexNB++)
+		{
+			detect=0;
+			B=frame.data[index    ];
+			G=frame.data[index + 1];
+			R=frame.data[index + 2];
+			if ((R>G) && (R>B))
+				if (((R-B)>=seuil) || ((R-G)>=seuil))
+					detect=1;
+			if (detect==1)
+				Binaire.data[indexNB]=255;
+			else
+				Binaire.data[indexNB]=0;
+		}
+		imshow("Detection", Binaire);
+		findContours(Binaire, contours, hierarchy, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_NONE);
+		Mat Dessin = Mat::zeros(X,Y, CV_8UC1);
+		unsigned int max = 0;
+		int id = 0;
+		for(numc = 0; numc<contours.size(); numc++) {
+			if (contours[numc].size() > max) {
+				max = contours[numc].size();
+				id = numc;
+			}
+		}
+		drawContours(Dessin, contours, id, 255);
+		imshow("Contours", Dessin);
+		if(waitKey(30) == 27) {
 			break;
 		}
 	}
-	// the camera will be deinitialized automatically in VideoCapture destructor
 	return 0;
 }