Task : Facial Detection using Haar Cascade Create 2 ROS nodes, the first one should extract the webcam feed by creating an Image Subscriber. Use facial detection on the subscribed feed by implementing Haar Cascades using OpenCV. The frames with detected faces should be published to the second ROS node, which crops the bounding box (detected face) from the Image subscribed.
-usb_cam used to get data from webcam to node_1
-cv_bridge converts Image to needed form and this image is converted to b&w as classifier takes gray input
-If the current frame has a face,it is published to node_2
-node_2 is used to display the Cropped image of face
