[ADD] basis for async arm detection

src/computervision/ObjectDetection.cpp

@@ -11,7 +11,7 @@
 
 namespace computervision
 {
-	cv::VideoCapture cap(1);
+	cv::VideoCapture cap(0);
 
 	cv::Mat img, imgGray, img2, img2Gray, img3, img4;
 
@@ -33,6 +33,11 @@ namespace computervision
 		return img;
 	}
 
+	cv::VideoCapture ObjectDetection::getCap()
+	{
+		return cap;
+	}
+
 	bool ObjectDetection::detectHand(Mat cameraFrame)
 	{
 		Mat inputFrame = generateHandMaskSquare(cameraFrame);