def im_to_numpy(img):
    img = misc.to_numpy(img)
    img = np.transpose(img, (1, 2, 0)) # H*W*C
    return img
def resize_label(img, owidth, oheight):
    img = misc.to_numpy(img)
    img = cv2.resize( img, (owidth, oheight), 'nearest' )
    img = misc.to_torch(img).float()
    return img