PIL FITs image decoder

[Robert Kern]

jbrewer wrote:

[I wrote:]
>>If you can bear having two copies in memory, Image.frombuffer()
>>generally does the trick.
> 
> What arguments do you pass to this function, and do you flatten the
> array from the FITs image?   I this but got garbage out for the image.

The array would have to be contiguous, which it may not be immediately
coming out of PyFITS. You also need to be sure that you are using the
right mode for the data.

In [7]: import Image

In [8]: import numarray

In [9]: z = numarray.zeros((256,256)).astype(numarray.UInt8)

In [10]: z[128,:] = 255

In [11]: img = Image.frombuffer('L', (256,256), z)

That creates a black image with a white, horizontal line in the middle.

-- 
Robert Kern
robert.kern at gmail.com

"In the fields of hell where the grass grows high
 Are the graves of dreams allowed to die."
  -- Richard Harter