On mardi 26 février 2008, Joao S. O. Bueno wrote:
> On Thu 21 Feb 2008 05:47:22 Sahar Vilan wrote:
> > Can anyone help me with transformation from numpy array to image (at
> > PIL library)?
> > I want to change an array (at numpy) into an image (at Image) in order
> > to rotate the image and save it in standard image format.
>
> Sorry for the long delay.
> These convertions in python among data and image representation indeed
> require some experimentation.
>
> (In my todo list, wiht low priority, I have a python module that would
> seamlessly translate image data across various image handling
> bindings/ibraries and numerical types).
>
> Fortunatey, in this case it is rather simple:
>
> For numpy.array -> python image, you do something like:
>
> a = numpy.array ("\x0" (WIDTH * HEIGHT * 3), "B")
> #code to create imag data inside array
> # (...)
> i = Image.new("RGB", (WIDTH, HEIGHT))
>
> i.fromstring(a.tostring())
> i.save(filename)
Hello,
I'm also very interested by such features, because I think it could be a
nice way to use color management libraries. For example, the little cms
python wrapper could handle arrays (which it does not yet), and then, PIL
could convert image from/to arrays.
> i.fromstring(a.tostring())
What is the performances of such transformations?
--
Frédéric
http://www.gbiloba.org
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