[Image-SIG] Image to Matrix to Image.

[Christopher Barker]

Fredrik Lundh wrote:
> "matrix" as in?
> 
> If you just want to work with the image data as Python sequence, use 
> getdata/putdata, or pixel access objects:
> 
>    >>> im = Image.open("image.jpg")
>    >>> pix = im.load()
>    >>> pix[0, 0]
>    (226, 162, 125)
>    >>> pix[0, 0] = (0, 0, 0)

or convert to numpy arrays:

# Added “fromarray” function, which takes an object implementing the 
NumPy array interface and creates a PIL Image from it. (from Travis 
Oliphant).

# Added NumPy array interface support (__array_interface__) to the Image 
class (based on code by Travis Oliphant). This allows you to easily 
convert between PIL image memories and NumPy arrays:

import numpy, Image

i = Image.open('lena.jpg')
a = numpy.asarray(i) # a is readonly
i = Image.fromarray(a)



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Christopher Barker, Ph.D.
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