- added

git-svn-id: http://moon:8086/svn/software/trunk/projects/opencv@310 b431acfa-c32f-4a4a-93f1-934dc6c82436
2016-09-17 10:25:43 +00:00
parent b361d4b8c2
commit 5b73cd0e1d
7 changed files with 594 additions and 0 deletions
@@ -0,0 +1,65 @@
+# 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=(640,480), framerate=30).start()
+time.sleep(2.0)
+fps = FPS().start()
+
+# Initiate FAST object with default values
+fast = cv2.FastFeatureDetector_create()
+fast.setNonmaxSuppression(True)
+
+# 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()
+	temp = frame
+
+	# find and draw the keypoints
+	kp = fast.detect(frame,None)
+	img2 = cv2.drawKeypoints(frame, kp, outImage=temp, color=(255,0,0))
+
+	# Print all default params
+	print ("Threshold: " + str(fast.getThreshold()))
+	print ("nonmaxSuppression: " + str(fast.getNonmaxSuppression()))
+	print ("neighborhood: " + str(fast.getType()))
+	print ("Total Keypoints with nonmaxSuppression: " + str(len(kp)))
+
+	# check to see if the frame should be displayed to our screen
+	cv2.imshow("Frame", img2)
+	key = cv2.waitKey(1) & 0xFF
+
+   	# 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()
+