Numpy and Image error

[Solimyr Solimyr]

Hi,
I'm trying to equalize an histogram of a raster image. I'm trying to following the method found in this site:

http://www.janeriksolem.net/2009/06/histogram-equalization-with-python-and.html

So I did the following step:

from PIL import Image
from numpy import *

im = array(Image.open('AquaTermi_lowcontrast.jpg').convert('L'))
imhist,bins = histogram(im.flatten(),nbr_bins,normed=True)
cdf = imhist.cumsum() 
cdf = 255 * cdf / cdf[-1]
im2 = interp(im.flatten(),bins[:-1],cdf)
im2.reshape(im.shape)
im2.save(filename)

But I get the following error:

Traceback (most recent call last):
File "<input>", line 1, in <module>
AttributeError: 'numpy.ndarray' object has no attribute 'save'

Do you know where I wrong?How can I fix it?
thx

[bvdet]

As the error message indicates, the array object im2 has no save method. If you are trying to create another image, you are going about it the wrong way.