Kinect のスケルトン情報を取得＆表示

スケルトン情報の取得に関するサンプルが沢山あるのだけれど，表示については（pygame の例はあれど）OpenCV のみで対処したサンプルが見つからず。
こんなのでよいのかしら？

import cv2
import numpy as np
import pykinect
from pykinect import nui
import thread
import sys

# Video
def video_frame_ready( frame ):
    if videoDisplay == False: return

    with screenLock:
        video = np.empty( ( 480, 640, 4 ), np.uint8 )
        frame.image.copy_bits( video.ctypes.data )

        if skeletons is not None:
            for index, data in enumerate(skeletons):
                if data.eTrackingState != nui.SkeletonTrackingState.TRACKED: continue

                #get right hand position
                handRightPosition = data.SkeletonPositions[nui.JointId.HandRight]
                hr = nui.SkeletonEngine.skeleton_to_depth_image(handRightPosition, 640, 480)

                #get left hand position
                handLeftPosition = data.SkeletonPositions[nui.JointId.HandLeft]
                hl = nui.SkeletonEngine.skeleton_to_depth_image(handLeftPosition, 640, 480)

                print "(%d, %d)" % (int(hr[0]), int(hr[1]))
                cv2.circle(video, (int(hr[0]), int(hr[1])), 20, (255, 0, 0), thickness=10)
                cv2.circle(video, (int(hl[0]), int(hl[1])), 20, (0, 0, 255), thickness=10)

        cv2.imshow( 'frame', video )

# Depth
def depth_frame_ready( frame ):
    if videoDisplay == True: return

    depth = np.empty( ( 240, 320, 1 ), np.uint16 )
    frame.image.copy_bits( depth.ctypes.data )

    print skeletons
    if skeletons is not None:
        for index, data in enumerate(skeletons):
            if data.eTrackingState != nui.SkeletonTrackingState.TRACKED: continue
            #get head position
            headPosition = data.SkeletonPositions[nui.JointId.Head]
            hp = nui.SkeletonEngine.skeleton_to_depth_image(headPosition, 320, 240)

            cv2.circle(depth, (int(hp[0]), int(hp[1])), 20, (255, 255, 255), thickness=10)

    cv2.imshow( 'frame', depth )

    
def skeleton_frame_ready(frame):
    global skeletons
    skeletons = frame.SkeletonData

if __name__ == '__main__':
    screenLock = thread.allocate()

    videoDisplay = False

    kinect = nui.Runtime()

    skeletons = None

    #skeleton frame ready event handling
    #Reference : http://www.slideshare.net/pycontw/pykinect
    kinect.skeleton_engine.enabled = True

    kinect.skeleton_frame_ready += skeleton_frame_ready
    kinect.video_frame_ready += video_frame_ready
    kinect.depth_frame_ready += depth_frame_ready

    kinect.video_stream.open( nui.ImageStreamType.Video, 2, nui.ImageResolution.Resolution640x480, nui.ImageType.Color )
    kinect.depth_stream.open( nui.ImageStreamType.Depth, 2, nui.ImageResolution.Resolution320x240, nui.ImageType.Depth )

    cv2.namedWindow( 'frame', cv2.WINDOW_AUTOSIZE )

    while True:
        #waitKey() returns ASCII code of the pressed key
        key = cv2.waitKey(33)
        if key == 27: # ESC
            break
        elif key == 118: # 'v'
            print >> sys.stderr, "Video stream activated"
            videoDisplay = True
        elif key == 100: # 'd'
            print >> sys.stderr, "Depth stream activated"
            videoDisplay = False

    cv2.destroyAllWindows()
    kinect.close()