[ADD] start for object detection

src/computervision/ObjectDetection.cpp

@@ -0,0 +1,36 @@
+#include "ObjectDetection.h"
+namespace computervision
+{
+	cv::VideoCapture cap(0);
+	cv::Mat img, imgGray, img2, img2Gray, img3, img4;
+
+	ObjectDetection::ObjectDetection()
+	{
+	}
+
+	void ObjectDetection::readWebcam()
+	{
+		cap.read(img);
+	}
+
+	void ObjectDetection::calculateDifference()
+	{
+		cap.read(img);
+		cap.read(img2);
+
+		cv::cvtColor(img, imgGray, cv::COLOR_RGBA2GRAY);
+		cv::cvtColor(img2, img2Gray, cv::COLOR_RGBA2GRAY);
+
+		cv::absdiff(imgGray, img2Gray, img3);
+		cv::threshold(img3, img4, 50, 170, cv::THRESH_BINARY);
+
+		imshow("threshold", img4);
+	}
+
+	void ObjectDetection::showWebcam()
+	{
+		imshow("Webcam image", img);
+	}
+
+
+}