- added

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

fps_nonThreaded.py

@@ -0,0 +1,64 @@
+# import the necessary packages
+from __future__ import print_function
+from imutils.video.pivideostream import PiVideoStream
+from imutils.video import FPS
+from picamera.array import PiRGBArray
+from picamera import PiCamera
+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())
+
+# initialize the camera and stream
+camera = PiCamera()
+camera.resolution = (320, 240)
+camera.framerate = 32
+rawCapture = PiRGBArray(camera, size=(320, 240))
+stream = camera.capture_continuous(rawCapture, format="bgr",
+	use_video_port=True)
+
+# allow the camera to warmup and start the FPS counter
+print("[INFO] sampling frames from `picamera` module...")
+time.sleep(2.0)
+fps = FPS().start()
+
+# loop over some frames
+for (i, f) in enumerate(stream):
+	# grab the frame from the stream and resize it to have a maximum
+	# width of 400 pixels
+	frame = f.array
+	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
+
+	# clear the stream in preparation for the next frame and update
+	# the FPS counter
+	rawCapture.truncate(0)
+	fps.update()
+
+	# check to see if the desired number of frames have been reached
+	if i == args["num_frames"]:
+		break
+
+# 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()
+stream.close()
+rawCapture.close()
+camera.close()
+