rotate image by pitch, roll, yaw with python-opencv

Question

I want to rotate an image with given roll, pitch and yaw

Here is the example image

import numpy as np
import math
import cv2

radian = math.radians(30)

def eulerAnglesToRotationMatrix(theta) :
    R_x = np.array([[1,                  0,                   0],
                    [0, math.cos(theta[0]), -math.sin(theta[0])],
                    [0,  math.sin(theta[0]), math.cos(theta[0]) ]])
    R_y = np.array([[math.cos(theta[1]), 0, math.sin(theta[1])],
                    [0,                  1,                  0],
                    [-math.sin(theta[1]), 0, math.cos(theta[1])]])
    R_z = np.array([[math.cos(theta[2]), -math.sin(theta[2]), 0],
                    [math.sin(theta[2]), math.cos(theta[2]),  0],
                    [0,                  0,                   1]])
    R = np.dot(R_z, np.dot( R_y, R_x ))
    return R

R = eulerAnglesToRotationMatrix((0,radian,0))
im = cv2.imread('yaw.png')
im = cv2.warpPerspective(im, R, (im.shape[1], im.shape[0]))
cv2.imshow('win', im)
cv2.waitKey(0)

original image

below is the result rotated by pitch 30 degrees.

the result is wrong.

any idea?