图片唱歌
用人家做好的库跑realtimeimage，结果到最后报错
from skimage.util import pad
ImportError: cannot import name ‘pad’ from ‘skimage.util’
哦，skimage更新删掉了pad，万恶的skimage
于是改成
from numpy import pad
ok，又报错了
ImportError: cannot import name ‘circle’ from ‘skimage.draw’
改成
from skimage.draw import ellipse as circle
完成。