read RGB values with python

[PEMY]

Hi all,
I need to read RBG values from a saved images with python.
The image is a tiff file16bit integer (16bit per channel)
The tiff is 1 pixel high and 1024 wide and I need to read all the 1024
colour values.
cheers

[Chris G]

Try google, there is PIL which may be overkill and libtiff that I can think of.

[Robert Durnin]

I think there is a wrapper for mogrify kicking around as well. It should have some tools for taking pixels by co-ordinate.

r

[PEMY]

Hi PIL is not a solution for me becouse support tiff single channel
16bit.
Currently Ii'm tring to use the OpenEXR module

http://www.excamera.com/articles/26/openexr.html

it should be able to open and read values form a EXR file (16floating
point format per channel)
(it is even better for what I'm doing.)
The problem is that I get a list of errors when I try to install it
under ubuntu.
Anyone is using it?
Cheers


On Aug 6, 12:14 am, "Robert Durnin" <robert.dur...@googlemail.com>
wrote:

> I think there is a wrapper for mogrify kicking around as well. It should
> have some tools for taking pixels by co-ordinate.
>
> r
>

> On Tue, Aug 5, 2008 at 3:53 PM, Chris G <cgreb...@gmail.com> wrote:
> > Try google, there is PIL which may be overkill and libtiff that I can think
> > of.
>

[Chris G]

What about the MImage class?  Does it support tiff?

[Dean Edmonds]

On Thu, Aug 7, 2008 at 6:23 PM, Chris G <cgre...@gmail.com> wrote:
> What about the MImage class? Does it support tiff?

It does.

--
-deane

[Als]

Maybe quick solution might be to convert your tif files to ppm, and
then read them:
http://en.wikipedia.org/wiki/Portable_pixmap (there is little python
script).
I hope it helps...

PS
I thought PIL can read 32 bit images.


Als

[PEMY]

Hi thank you for your suggestions.

PIL support the normal RGB 8bit per channel.
I need to read RGB 16bit per channel.

the standard ppm support 8 bit per channel (I will do some test
anyway).

tnks

On Aug 8, 12:26 am, Als <al.s...@yahoo.co.uk> wrote:
> Maybe quick solution might be to convert your tif files to ppm, and

> then read them:http://en.wikipedia.org/wiki/Portable_pixmap(there is little python

[kakle]

i guess its too late but tiff specifications are easilly available, so
u can read a file in binary, if you really must.

partners.adobe.com/public/developer/en/tiff/TIFF6.pdf