Autojit - how to increase performance for rotating

Question

I have the following code:

def rotation_cpu(img, theta, dst):
    cosTheta = np.cos(theta)
    sinTheta = np.sin(theta)
    for i in range(512):
        for j in range(512):
            xpos = cosTheta * i - sinTheta * j
            ypos = sinTheta * i + cosTheta * j
            dst[xpos + 725/2, ypos ] = img[i,j]

I'm testing it, and I get 1.7300620079seconds. But, when I use the @autojit decorator it get worse.

from numbapro import autojit

@autojit
def rotation_cpu(img, theta, dst):
    cosTheta = np.cos(theta)
    sinTheta = np.sin(theta)
    for i in range(512):
        for j in range(512):
            xpos = cosTheta * i - sinTheta * j
            ypos = sinTheta * i + cosTheta * j
            dst[xpos + 725/2, ypos ] = img[i,j]

with 1.92721390724 seconds. Should I change something to get better performances?

The code for testing is:

from timeit import default_timer as timer
from scipy.misc import imread

img = imread("pic.jpg") # it is a 512x512 pic.
theta = 45
ts = timer()
dst = np.zeros((725, 725)) # new boundaries
rotation_cpu(img, theta * np.pi / 180, dst)
te = timer()

print te - ts