FPS comparison demo for smartphone ip-camera integration

demos/ipcamera_fps_demo.py

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+# author:    Adrian Rosebrock
+# website:   http://www.pyimagesearch.com
+
+# USAGE
+# BE SURE TO INSTALL 'imutils' PRIOR TO EXECUTING THIS COMMAND
+# Install and start IP Camera on android, Play Store Link : https://play.google.com/store/apps/details?id=com.pas.webcam&hl=en_IN
+# python ipcamera_fps_demo.py --ip-camera-addr http://192.168.43.1:8080/video
+# python ipcamera_fps_demo.py --display 1 --ip-camera-addr http://192.168.43.1:8080/video 
+# REPLACE THE IP ADDRESS WITH IP ADDRESS OF YOUR SMARTPHONE. 
+
+# import the necessary packages
+from __future__ import print_function
+from imutils.video import VideoStream
+from imutils.video import FPS
+import argparse
+import imutils
+import cv2
+
+# construct the argument parse and parse the arguments
+ap = argparse.ArgumentParser()
+ap.add_argument("-n", "--num-frames", type=int, default=100,
+	help="# of frames to loop over for FPS test")
+ap.add_argument("-d", "--display", type=int, default=-1,
+	help="Whether or not frames should be0 displayed")
+ap.add_argument("-i","--ip-camera-addr", required=True, 
+	help="full address of the ip camera, eg : http://192.168.43.1:8080/video")
+args = vars(ap.parse_args())
+
+# grab a pointer to the video stream and initialize the FPS counter
+print("[INFO] sampling frames from webcam...")
+stream = cv2.VideoCapture(args["ip_camera_addr"])
+
+# try to read a frame and verify proper connection to Ip Camera
+ret,frame = stream.read()
+
+if ret == False:
+	print('Failed to read from IP Camera with address {}.\n Check if IP camera is running and address given is correct'.format(args["ip_camera_addr"]))
+	exit()
+
+fps = FPS().start()
+
+# loop over some frames
+while fps._numFrames < args["num_frames"]:
+	# grab the frame from the stream and resize it to have a maximum
+	# width of 400 pixels
+	(grabbed, frame) = stream.read()
+	frame = imutils.resize(frame, width=400)
+
+	# check to see if the frame should be displayed to our screen
+	if args["display"] > 0:
+		cv2.imshow("Frame", frame)
+		key = cv2.waitKey(1) & 0xFF
+
+	# update the FPS counter
+	fps.update()
+
+# stop the timer and display FPS information
+fps.stop()
+print("[INFO] elasped time: {:.2f}".format(fps.elapsed()))
+print("[INFO] approx. FPS: {:.2f}".format(fps.fps()))
+
+# do a bit of cleanup
+stream.release()
+cv2.destroyAllWindows()
+
+# created a *threaded *video stream, allow the camera senor to warmup,
+# and start the FPS counter
+print("[INFO] sampling THREADED frames from webcam...")
+vs = VideoStream(src=args["ip_camera_addr"]).start()
+fps = FPS().start()
+
+# loop over some frames...this time using the threaded stream
+while fps._numFrames < args["num_frames"]:
+	# grab the frame from the threaded video stream and resize it
+	# to have a maximum width of 400 pixels
+	frame = vs.read()
+	frame = imutils.resize(frame, width=400)
+
+	# check to see if the frame should be displayed to our screen
+	if args["display"] > 0:
+		cv2.imshow("Frame", frame)
+		key = cv2.waitKey(1) & 0xFF
+
+	# update the FPS counter
+	fps.update()
+
+# stop the timer and display FPS information
+fps.stop()
+print("[INFO] elasped time: {:.2f}".format(fps.elapsed()))
+print("[INFO] approx. FPS: {:.2f}".format(fps.fps()))
+
+# do a bit of cleanup
+cv2.destroyAllWindows()
+vs.stop()