Re: [Gimp-developer] Purple fringing removal extension

On 07/14/2012 01:51 PM, Monty Montgomery wrote:
> On Sat, Jul 14, 2012 at 4:35 AM, Martin Jambon <gimp mjambon com> wrote:
>> Hi,
>> I am totally new here but I wrote a standalone program that does a
>> decent job of removing purple fringing from photos, and I would like to
>> be able to implement the same functionality for Gimp.
>> Here are some examples of what it does:
> Hey, that's not half bad.  I especially like that it doesn't go
> overboard trying to 'fix' everything completely, just makes a nice
> solid improvement.
> Do you have any examples that show it not working well, or doing
> something unexpected?  For example, a camera where the fringing is a
> slightly different hue due to a slightly different Bayer filter, or a
> different UV cutoff?

It requires manual tuning when purple objects are present, otherwise the
default settings would often grey them out. The purple areas in the last
example at would become
completely black with the default settings.

I am sure there are many ways to improve the results but before digging
deeper, which can last forever, I would like to create an initial Gimp

> I would Totally Use This, especially given my fondness for vintage
> lenses that can fringe badly.

Good to hear!


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