Pixel Array => Bitmap File

[Jason B]

Hi all,

I'm somewhat new to Python and I'm trying to figure out the best way to
accomplish the following:

From an array of pixel data in an XML file (given the format, width and
height of the image as attributes) I must read in the data and save it off
as a bmp file.

I've gotten the PIL and Win32 packages and it seems that using
functionallity from each I should be able to do this, but I haven't yet
figured out how.

Scouring the internet for a tutorial hasn't netted me anything so far, so I
was hoping someone here could point me in the right direction...

Thanks!
J

[Roel Schroeven]

Re: Pixel Array => Bitmap File

Jason B schreef:

Hi all,
>
I'm somewhat new to Python and I'm trying to figure out the best way to
accomplish the following:
>
From an array of pixel data in an XML file (given the format, width and
height of the image as attributes) I must read in the data and save it off
as a bmp file.
>
I've gotten the PIL and Win32 packages and it seems that using
functionallity from each I should be able to do this, but I haven't yet
figured out how.
>
Scouring the internet for a tutorial hasn't netted me anything so far, so I
was hoping someone here could point me in the right direction...

- read your pixels from the XML file and assemble them in the correct
format in a buffer
- use Image.frombuffe r() or Image.fromstrin g() (from PIL) to create an
image from that data
- use Image.save() (also from PIL) to save it as a bmp.

Have a look at http://www.pythonware.com/library/pi...book/image.htm
for the details on those methods.

--
If I have been able to see further, it was only because I stood
on the shoulders of giants. -- Isaac Newton

Roel Schroeven

[Jason B]

Re: Pixel Array => Bitmap File

Thanks, Roel...

The Image.frombuffe r() method looks promising, but the "mode" parameter
seems a bit too limited for my needs. I must be able to specify not only
the order of the bits (RGB in any order) but also whether the format is 565,
555, etc.

Maybe I need to work outside the bounds of PIL?

- J

[Jason B]

Re: Pixel Array => Bitmap File

My mistake, I see the section now about "Writing Your Own File Decoder..."

Thanks again for your help!

- J


"Jason B" <me@mylife.comw rote in message
news:mV1Fh.2439 $M65.1505@newss vr21.news.prodi gy.net...

Thanks, Roel...
>
The Image.frombuffe r() method looks promising, but the "mode" parameter
seems a bit too limited for my needs. I must be able to specify not only
the order of the bits (RGB in any order) but also whether the format is
565, 555, etc.
>
Maybe I need to work outside the bounds of PIL?
>
- J
>