diff --git a/src/traitement.cpp b/src/traitement.cpp
index 2ce495b..76f7079 100644
--- a/src/traitement.cpp
+++ b/src/traitement.cpp
@@ -1,51 +1,65 @@
 #include "opencv2/opencv.hpp"
 
-using namespace cv;
-using namespace std;
+int filter(const cv::Mat& img, cv::Mat output, int seuil) {
+	bool detect = false;
+	uchar R, G, B;
+	int rows = img.rows;
+	int cols = img.cols;
+	int dim = img.channels();
+	int indexNB;
 
-int main(int, char**)
-{
+	for (int index=0,indexNB=0;index<dim*rows*cols;index+=dim,indexNB++) {
+		detect=0;
+		B = img.data[index    ];
+		G = img.data[index + 1];
+		R = img.data[index + 2];
+
+		if ((R>G) && (R>B))
+			if (((R-B)>=seuil) || ((R-G)>=seuil))
+				detect=1;
+		if (detect==1)
+			output.data[indexNB]=255;
+		else
+			output.data[indexNB]=0;
+	}
+}
+
+int main(int argc, char** argv) {
 	int seuil=80;
+
+	if (argc > 1) {
+		seuil = atol(argv[1]);
+	}
+
 	char detect;
-	VideoCapture cap(0); 
+	cv::VideoCapture cap(0); 
 	if(!cap.isOpened())  
 		return -1;
-	namedWindow("Image",1);
-	namedWindow("Detection",1);
-	namedWindow("Contours",1);
-	for(;;) {
-		int X,Y,DIM,index,indexNB;
+	cv::namedWindow("Image",1);
+	cv::namedWindow("Detection",1);
+	cv::namedWindow("Contours",1);
+	while(true) {
+		int X,Y,DIM,index;
 		unsigned int numc;
 		uchar R,G,B;
-		vector<vector<Point> > contours;
-		vector<Vec4i> hierarchy;
-		Mat frame;
+		std::vector<std::vector<cv::Point> > contours;
+		std::vector<cv::Vec4i> hierarchy;
+		cv::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);
+		cv::Mat binaire(X,Y,CV_8UC1);
+		cv::imshow("Image", frame);
+		cv::GaussianBlur(frame, frame, cv::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);
+
+		filter(frame, binaire, seuil);
+
+		cv::imshow("Detection", binaire);
+		cv::findContours(binaire, contours, hierarchy, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_NONE);
+		cv::Mat Dessin = cv::Mat::zeros(X,Y, CV_8UC1);
 		unsigned int max = 0;
 		int id = 0;
 		for(numc = 0; numc<contours.size(); numc++) {
@@ -54,9 +68,9 @@ int main(int, char**)
 				id = numc;
 			}
 		}
-		drawContours(Dessin, contours, id, 255);
-		imshow("Contours", Dessin);
-		if(waitKey(30) == 27) {
+		cv::drawContours(Dessin, contours, id, 255);
+		cv::imshow("Contours", Dessin);
+		if(cv::waitKey(30) == 27) {
 			break;
 		}
 	}