Hi,
I have finally managed to do some C-extensions for the improved color2gray
image transformation and the daltonize, see
http://moinmo.in/FeatureRequests/EnhanceTransclusionSyntaxForImages for
image samples and code.
I owe this mainly to Kevin Cazabon, which has already done a very nice
Gaussian blur and unsharpen filter for PIL, see
http://mail.python.org/pipermail/image-sig/2008-May/005003.html . His code
served as a basis for my own coding work
This mail is also a reminder / request to consider making these things part
of a future PIL release ;-)
Oliver
----- Original Message -----
From: "Oliver Siemoneit" <[EMAIL PROTECTED]>
To: <image-sig@python.org>
Sent: Friday, September 12, 2008 6:30 PM
Subject: Image Correction For Colorblind Users
Hi,
I have implemented two image correction algorithms which probably could
make
images more accessible for people with a color vision defeciency (see for
some image samples and python code the zip archive attached).
- One algorithm does an optimized color2gray transformation trying to
preserve more details and thus overcoming the problems of normal
color2gray
transformation
- Another algorithm does some image correction on colored images,
something
like the people on http://www.vischeck.com/daltonize/ do.
Here my questions:
1.) Is this something for the PIL standard distribution, especially the
color2gray algorithm?
2.) My problem is: Both algorithms are very slow. You can't use them
really
on a productive system (e.g. a server where all pictures which have been
uploaded are automattically transformed). Is there a way to speed this up?
Is there a way to do some C-Plugin for PIL (I think I cannot optimize the
pyhton code anymore)? I need a fast and platform independent way to
transform images with the above algorithms (since I try to get that in the
Moin Wiki standard distribution, see
http://moinmo.in/FeatureRequests/EnhanceTransclusionSyntaxForImages and
http://moinmo.in/AccessibleMoin)
I would be very happy if I could get some advice how to speed that up
and/or
how to integrate that with PIL. I am not an expert programmer. I'm at my
wids' end.
And sorry if this mail is a littel bit "off-topic" on this mailing list.
But
I had no idea whom to ask.
Cheers,
Oliver
_______________________________________________
Image-SIG maillist - Image-SIG@python.org
http://mail.python.org/mailman/listinfo/image-sig
