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GIMP 2.6 Tutorials

Touching Up Photographs / Green Eye Removal




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Subtitles of the Movie

In this movie we're going to take a look at another method that we can use to remove red eye or remove green eye. Now, of course, green eye is something that happens to animals a little bit more than humans so let's go ahead and open up our document here. So we'll go to File Menu and Open and I'll select Cat Green Eye and we'll see that we have a cat here that is pretty obviously on the prowl. So what we want to do is we want to remove this kind of green eye that's occurring to our cat. So I'm going to go ahead and zoom in here and one of the things that's enhancing this green eye effect is that the cat actually has very blue eyes so the green that's coming out is also mixing in with the blue here. Now, to remove this green eye effect we're going to need to use our Colors Desaturate. Of course we don't want to desaturate the entire image. We're going to want to isolate this. So now only is this desaturate going to be good for the green eye, but you could also use this for red eye. So let's go ahead and let's select our eyes. I'm going to go ahead and grab my Paintbrush Tool and I'll swap it to white and I'll make sure that I have a nice fuzzy brush here and I'll check my scale just by coming out it looks like it's going to be OK. Now, I do want to go ahead and drop the opacity down a little bit here. Actually I'll decrease my scale as well because I don't want to get rid of all of the blue eyes because that wouldn't really look quite right. So I'm going to decrease my scale a little bit more and I'll spend a little bit more time going around in the areas that need to be worked on. OK? So then I will toggle Quick Mask Mode by clicking on the Quick Mask Mode Button and I'll come in here to my document and I'll make my selection. Now, something else that we're going to need to do with the eyes here is that we're going to need to darken them up a little bit because these are really light eyes so they're really shining. So we're going to need to take control of that using some layer options. So there we go. I've made my selection here. I'm going to go ahead and jump out of Quick Mask Mode. Now, before I actually desaturate or anything else, I need to adjust what's going on here in my Layers Dialog so I need to duplicate my background and notice what happened. My selection persists even though I just had the one layer to begin with. So then I will hide the original background layer and then rename this duplicate copy to DuplicateBG or DupBG and then with that selected I'll go to the Colors Menu and I'll Desaturate and you'll see that the green is removed here. I'll go ahead and click OK. Now what I want to do is I want to replace some of this color here and I'm going to go ahead and grab my Fuzzy Select here and I'm going to Subtract from Selection and I'm going to click in the white area here. I may need to do a couple of clicks because what I'm looking for is I'm looking for selecting this area that's right outside of the white of the eye. So I'm going to copy, so I can either do Control C or go to the Edit Menu and Copy and then I'm going to Paste. And I'm going to create a new layer here and I can click on the New Layer Button or if I want it to create a new layer for me, I can do Control Shift N and that creates that new layer. So now what I want to do with that area is I want to go to the Colors Menu and do Hue Saturation. So I want to adjust the hue here so that it matches the blue that's going on with the cat. So if you notice here I'm having some issues just doing the master hue. So that's why I'm going to jump up here and use the cyan and saturate it a bit more. Adjusting the blue and saturating that a bit more will also bring out the blue in that area. Go back to the cyan and I'll make it a little bit lighter and there we go. We now have some nice blue eyes here. Click OK and of course we're not quite done because we have the whites of the eye that we need to kind of take care of because it's a little bit creepy. So I'm going to go back here to the DuplicateBG and I'm going to grab my Paintbrush and I'm going to select just the whites of the eye. And don't forget, if you make a sloppy selection with your Quick Mask Mode, you can hit the X and it will swap the colors out so you can remove selections. So there's my selection. I'm going to go ahead and copy and then paste that in and then do that as a new layer and then on this pasted layer I'm going to go ahead and name that Pupils and I'm going to check this lock. So that's going to lock the transparency so it's going to make it so that I can only paint in on non-transparent areas, which are just going to be the pupils. So with my Paintbrush and black, I'm going to drop the opacity down a little bit and come in here and I'm going to paint in the pupil area. Now, I dropped the opacity down so that I could build up the dark. So I want to build up the dark and I want it to go all the way out. Now, with that I'm going to go ahead and uncheck the lock and I'm going to grab my blur and come in and blur that a bit so it looks a little bit more natural. Do that to both eyes. I'm also going to rename my layer here to Iris and I'll blur that a little bit as well to make it look a little bit more natural and then I'm going to zoom back out and our cat no longer has the threatening green eyes that we had just seen. So I'm going to go to the File Menu and I'll Save As My XCF and then I'll hit Save and that's how you're going to be able to remove not only green eye but also red eye and then enhance the desaturated adjustment.

Tutorial Information

Course: GIMP 2.6
Author: James Street
SKU: 34004
ISBN: 1-935320-50-5
Release Date: 2009-06-23
Duration: 12 hrs / 130 lessons
Work Files: Yes
Captions: Available on CD and Online University
Compatibility: Vista/XP/2000, OS X, Linux
QuickTime 7, Flash 8

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