tracker.py 文件源码

def get_fps(source, Videolength):
    cap = cv2.VideoCapture(source)
    frame_counter = 0
    print "Calculating Frames per second . . . "

    while (True):
        # Capture frame-by-frame

        ret, frame = cap.read()
        if not ret:
            break

        frame_counter += 1

    cap.release()
    cv2.destroyAllWindows()
    fps = float(frame_counter/Videolength)
    print "\nFPS is " +str(fps)+"\n"

    return fps

#Algorithm to check intersection of line segments
#It checks iteratively intersection between a pair of points(Last location of the vehicle) and pairs of points of another List(Pedestrian path)