- added

git-svn-id: http://moon:8086/svn/software/trunk/projects/opencv@310 b431acfa-c32f-4a4a-93f1-934dc6c82436

fps_threaded.py

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+# import the necessary packages
+from __future__ import print_function
+from PiVideoStream import PiVideoStream
+from imutils.video import FPS
+from picamera.array import PiRGBArray
+from picamera import PiCamera
+import numpy as np
+import argparse
+import imutils
+import time
+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 be displayed")
+args = vars(ap.parse_args())
+
+# created a *threaded *video stream, allow the camera sensor to warmup,
+# and start the FPS counter
+print("[INFO] sampling THREADED frames from `picamera` module...")
+vs = PiVideoStream(resolution=(320,240), framerate=30).start()
+time.sleep(2.0)
+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
+	frame = vs.read()
+
+	hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
+	h,s,v = cv2.split(hsv)
+	img = cv2.merge((h,s,v))
+	rgb = cv2.cvtColor(img, cv2.COLOR_HSV2BGR)
+
+	# check to see if the frame should be displayed to our screen
+	if args["display"] > 0:
+		if frame  != None:	
+			cv2.imshow("Frame", rgb)
+			key = cv2.waitKey(10) & 0xFF
+	else:
+		time.sleep(0.5)
+
+   	# update the FPS counter
+	fps.update()
+
+# stop the timer and display FPS information
+fps.stop()
+vs.stop()
+print("[INFO] elasped time: {:.2f}".format(fps.elapsed()))
+print("[INFO] approx. FPS: {:.2f}".format(fps.fps()))
+print("[INFO] Camera : elasped time: {:.2f}".format(vs.getfps().elapsed()))
+print("[INFO] Camera: approx. FPS: {:.2f}".format(vs.getfps().fps()))
+
+# do a bit of cleanup
+cv2.destroyAllWindows()
+