[Numpy-discussion] display numpy array as image

Giorgio F. Gilestro giorgio@gilestro...
Thu Nov 29 16:48:02 CST 2007

I am not sure I got what you mean but I am using PIL to convert arrays 
to images and viceversa
see http://mail.python.org/pipermail/image-sig/2006-September/004099.html
I embed bmps using wxpython.

Zachary Pincus wrote:
> Hello all,
> I'm curious if people have experience with / preferences for how to  
> display a numpy array onscreen as an image.
> Pyglet looks relatively easy -- you can feed an image buffer object  
> with a string or a ctypes pointer. I presume getting a string from an  
> array is plenty fast, but the ctypes pointer option is intriguing as  
> it allows for dealing with simple strided arrays (the image objects  
> allow for an arbitrary number of bytes between rows). Is it possible  
> to get a ctypes pointer to the beginning of the array buffer from  
> numpy without too much ugliness?
> wxPython looks pretty easy too, as there are facilities for getting  
> pixels from a buffer. Does anyone have any experience with these? Are  
> there ways of allowing a numpy array and a wxPython image to point to  
> the same memory?
> Anyhow, these are specific questions, but I'd also appreciate any  
> general thoughts about good approaches for getting pixels from numpy  
> arrays onscreen.
> Thanks,
> Zach
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