def METHOD_NAME(self):
    cam_num = 0
    for cam in self.camera_list:
        img = cam.get_latest_image()
        # display image
        window_name = "cam%d" % cam_num
        cv2.namedWindow(window_name, 0)
        cv2.resizeWindow(window_name, 640, 480)
        cv2.imshow (window_name, img)
        # write to file
        #imgfilename = "C:\Users\rmackay9\Documents\GitHub\ardupilot-balloon-finder\smart_camera\img%d-%d.jpg" % (cam_num,cam.get_image_counter())
        #imgfilename = "img%d-%d.jpg" % (cam_num,cam.get_image_counter())
        #print (imgfilename)
        #cv2.imwrite(imgfilename, img)
        # check for ESC key being pressed
        k = cv2.waitKey(5) & 0xFF
        if k == 27:
            break
        cam_num = cam_num + 1