From fredrik@pythonware.com  Fri Apr  3 05:31:08 1998
From: fredrik@pythonware.com (Fredrik Lundh)
Date: Fri, 3 Apr 1998 07:31:08 +0200
Subject: [IMAGE-SIG] HSI2RGB conversion
Message-ID: <01bd5ec1$b4b67f40$f29b12c2@panik.pythonware.com>

(I sent my reply to python-list instead of image-sig. Better
post it here as well, so it shows up in the archives..)


>How can a HSI to RGB (and backwards) conversion
>be done in PIL ?

There's no support for HSI (HSL, HSB, you name it) colour
spaces in the current version of PIL.  Contributions would
be welcome.

Note that you can use the "convert(mode, matrix)" form to
handle "rotated" colour spaces, like YCrCb, YUV and XYZ (see
the handbook for details).

Cheers /F
fredrik@pythonware.com
http://www.pythonware.com




From rshotts@usinternet.com  Wed Apr  8 01:26:57 1998
From: rshotts@usinternet.com (Russell A.Shotts)
Date: Tue, 7 Apr 1998 19:26:57 -0500
Subject: [Image-SIG] PIL 0.3a4 binary
Message-ID: <01bd6285$0a64ea00$964fa2d0@rshotts.usinternet.com>

Hi,

I've been looking for a way to update individual pixels in an RGB image, but
I have not had any success with the binary distribution of PIL 0.3a1 from
the python.org download page.  Based upon a quick look at the 0.3a4 source I
grabbed from the PythonWare page, it appears that the latest version
supports this operation via ImageDraw.

First, can anyone confirm that this operation is supported in 0.3a4?  (Or
can you tell me an alternative way to do it in 0.3a1?)

Second, is there an existing "official" 0.3a4 binary distribution for
Windows 95?  (If it matters, I am using Python 1.5 with TK 8.0p2)

Finally, if I must rebuild, I appear to need JPEG and ZLIB source.  Do I
need anything else?

Thanks.
_______________________________________
Russ Shotts -- rshotts@usinternet.com