Version: 0.9.0-beta1 (using KDE KDE 3.5.4) Installed from: Debian testing/unstable Packages OS: Linux I think it would be nice to be able to use 'physical filters' similar to the ones available from most camera shops. Personally I think the most used would be: - Polarising - Warm - Cold - UV I don't think that this should be too hard to do, this is how I would do it using a generic image editor: 1 - Duplicate the basic layer 2 - Desaturate (remove the colours) from the duplicate (which is ABOVE the original) 3 - Colourise the the duplicate* 4 - Make the duplicate opaque (see though) to somewhere between 20% and 70%** 5 - That should produce a nice image which looks like it's had a filter applied. * Colourise depending on the filter selected and on some (controllable?) algorithm to work out how strong. ** Default worked out by an algorithm but controllable by the user. Now, pardon me if I've proposed something really dumb, but, I think it'd be nice and quite enjoyably usable. For those who don't understand about filters: http://www.jessops.com/Products/SearchResults.aspx?searchword=&CatId=194&cl=1-132-194
Fix me if i'm wrong, but simulate a "Polarising" filter is imposible to do with a computer, because it's relevant of pure optic correction. Of course, 'Polarising' filter is the better optic tool to improve color rendering during shot. Gilles
Physical filters can't really be reproduced, but, a nice _fake_ should be makable. After all, we have some quite impressive algorithms to create data which isn't there. We can but hope. :) -- Robert
This can be achieved by superimpose templates. I did few experiments (with positive results) for gradients filters some time ago. I believe my work was included in some pack of downloadable superimpose templates years ago.
Yeah, some quite nice effects can be produced, I know I've created used the same idea to create 'warm' and 'cold' looks. I know that some of the 'filters' wouldn't be possible, but a few of the others would be nice; and, I think it's pretty much an unique idea. -- Robert
Ad #1, polarizing filter: Lightzone 3.0.6 claims it can do "Polarization Style, emulates a polarization filter" http://lightcrafts.com/support/versions/files/category-4.html Would be interesting to see an example of that in action ... BTW, an interesting article is here http://www.adorama.com/catalog.tpl?article=100305&op=academy_new
Hi Robert and happy new year, Please take a look in GMic Qt plugin for digiKam image editor to see if this kind of tool do not exists yet. Best regards Gilles Caulier
For all digiKam Image Editor advanced improvements, we will delegate this the Gmic-Qt plugin which is stable enough everywhere to be used in production. It include more than 400 filters to use by photographers. https://i.imgur.com/OFerL8H.png