On 8/20/05, Stephan Hegel wrote:

Hi all,

Recently I had to deal with a couple of images with signifcant vignetting in the corners: they were a few % darker. So, I was looking around for an adjustable anti-vignetting filter for Gimp, similar like that one for "digikam". Any idea ?

I'm not sure I understand the words in your description, but I believe there was a 1.x plugin called "Homogenize" -- maybe it does what you're looking for...? If it does, maybe consider porting it to 2.x if you know how. ^_-

On Sat 20-Aug-2005 at 06:07 +0200, Stephan Hegel wrote:

Recently I had to deal with a couple of images with signifcant vignetting in the corners: they were a few % darker. So, I was looking around for an adjustable anti-vignetting filter for Gimp, similar like that one for "digikam". Any idea ?

There is the radial luminance filter in the panorama tools gimp plugin:

http://panotools.sourceforge.net/

..but you might prefer to simply create a new layer over your photo, fill it with a radial gradient (black in the middle and white in the corners) and set the layer mode to 'multiply' or 'lighten only'.

Then you need to adjust the opacity of this layer until the picture underneath looks right. For a more refined technique, follow this photoshop tutorial:

http://homepage.ntlworld.com/j.houghton/vignette.htm

Hi,

Stephan Hegel writes:

Recently I had to deal with a couple of images with signifcant vignetting in the corners: they were a few % darker. So, I was looking around for an adjustable anti-vignetting filter for Gimp, similar like that one for "digikam". Any idea ?

What I ussually do with such images is to create a very blurred version and use that as an overlay on the original image. With the right layer mode (try lighten), this will fix the vignetting problem.

Sven