jens
5b73cd0e1d
git-svn-id: http://moon:8086/svn/software/trunk/projects/opencv@310 b431acfa-c32f-4a4a-93f1-934dc6c82436
66 lines
2.1 KiB
Python
Executable File
66 lines
2.1 KiB
Python
Executable File
# import the necessary packages
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from __future__ import print_function
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from PiVideoStream import PiVideoStream
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from imutils.video import FPS
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from picamera.array import PiRGBArray
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from picamera import PiCamera
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import numpy as np
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import argparse
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import imutils
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import time
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import cv2
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# construct the argument parse and parse the arguments
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ap = argparse.ArgumentParser()
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ap.add_argument("-n", "--num-frames", type=int, default=100,
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help="# of frames to loop over for FPS test")
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ap.add_argument("-d", "--display", type=int, default=-1,
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help="Whether or not frames should be displayed")
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args = vars(ap.parse_args())
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# created a *threaded *video stream, allow the camera sensor to warmup,
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# and start the FPS counter
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print("[INFO] sampling THREADED frames from `picamera` module...")
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vs = PiVideoStream(resolution=(640,480), framerate=30).start()
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time.sleep(2.0)
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fps = FPS().start()
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# Initiate FAST object with default values
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fast = cv2.FastFeatureDetector_create()
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fast.setNonmaxSuppression(True)
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# loop over some frames...this time using the threaded stream
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while fps._numFrames < args["num_frames"]:
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# grab the frame from the threaded video stream
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frame = vs.read()
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temp = frame
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# find and draw the keypoints
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kp = fast.detect(frame,None)
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img2 = cv2.drawKeypoints(frame, kp, outImage=temp, color=(255,0,0))
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# Print all default params
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print ("Threshold: " + str(fast.getThreshold()))
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print ("nonmaxSuppression: " + str(fast.getNonmaxSuppression()))
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print ("neighborhood: " + str(fast.getType()))
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print ("Total Keypoints with nonmaxSuppression: " + str(len(kp)))
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# check to see if the frame should be displayed to our screen
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cv2.imshow("Frame", img2)
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key = cv2.waitKey(1) & 0xFF
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# update the FPS counter
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fps.update()
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# stop the timer and display FPS information
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fps.stop()
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vs.stop()
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print("[INFO] elasped time: {:.2f}".format(fps.elapsed()))
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print("[INFO] approx. FPS: {:.2f}".format(fps.fps()))
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print("[INFO] Camera : elasped time: {:.2f}".format(vs.getfps().elapsed()))
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print("[INFO] Camera: approx. FPS: {:.2f}".format(vs.getfps().fps()))
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# do a bit of cleanup
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cv2.destroyAllWindows()
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