16bit RGB with Image module

[Jason B]

Well I kept screwing around and funny thing, this works:

import sys, Image

if len(sys.argv) ==  2:
  print "\nReading: "+sys.argv[1]
  image_file = open(sys.argv[1], "rb")
  pixel_data = image_file.read()

im = Image.fromstring("RGB", (326, 325), pixel_data, "raw", "BGR;16")
im.show()

Although I have no idea *why* it works, other than the fact that I'm now 
using the correct number of bits per pixel.  :)

Anyone have thoughts on this?

Thanks!
J


"Jason B" <me at mylife.com> wrote in message 
news:hcdOh.9548$JZ3.7651 at newssvr13.news.prodigy.net...
> Hi all,
>
> I'm still new to all of this, but I'm trying to do something here that 
> *seems* like it should be pretty simple.  All I want to do is take an 
> array of pixel data from a file (no header data or anything, just pixel 
> data) in RGB565 format and save it off to a bitmap file - or display it, 
> in the case below:
>
> import sys, Image
>
> if len(sys.argv) ==  2:
>  print "\nReading: "+sys.argv[1]
>  image_file = open(sys.argv[1], "rb")
>  pixel_data = image_file.read()
>
> im = Image.fromstring("RGB", (326, 325), pixel_data)
> im.show()
>
> When run, I get:
>
> ValueError: not enough image data
>
> Which I'm pretty sure is because it's expecting a 24bit image.  Of course 
> if I tune down the width and height or change the format to B&W ("L") then 
> it *does* display an image, the B&W one even having recognizable features, 
> just not the right one.  :(
>
> I've read through the documentation a thousand times trying to understand 
> the raw decoder and plugins, etc. but I still can't figure this out...
>
> Any help is greatly appreciated!
>
> Thanks,
> J
>