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Face and Head Swaps

Saufnase's Face Swap Tutorial

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I use the visual guides to give me lines on where the eyes, nose, and mouth are. So when I'm shrinking or enlarging a face to cover another, I have a very easy reference to see how much larger/smaller it needs to be. Or, reduce the opacity on your top face layer so you can see how eyes, nose, and mouth are lining up.

Use the "add noise" filter to get clean pics blended with noisy pics. I usually zoom in so I can see the actual pixels in the area I'm filtering as well as the surrounding area, so I can compare the noise in the two and see when I'm close. Sometimes "uniform" noise is best, sometimes "gaussian", you just have to play around. I usually end up applying between 1-4% noise to get images to blend better. If you're blending b&w pics, remember to check "monochrome" in the noise options.

Also, when blending faces, sometimes you can get by with using less of the new face. For example, ocassionally you can just blend in the eyes, nose, and mouth w/o the cheeks, eyebrows, chin, etc. Other times only the whole face looks right. Once again, it varies from image to image.

One other note, always use a non-destructive option if it's available. e.g. instead of using the eraser to get rid of areas you think you don't want (you might well want them back later, after you've carried out 80 or so commands and can't back up in your history), create a layer mask and paint in it to block out the areas. Use a levels adjustment layer instead of going to "image --> adjustments --> levels", which is a permanent adjustment. And so on and so on...

2004-06-04 12:38:35 PM modified_dangler
By "merges" I'm guessing you mean head swaps. The most important thing is to find a "target" head that was photographed at as close a perspective as possible to the original. If you're completely replacing the original head this isn't as vital, but if you're doing a FACE/OFF style face transplant it is absolutely vital.

To position the new head, change its layer opacity to 50-75% and use free transform (ctrl-T) to match it up with the original. Try to put the new eyes on top of the old ones, etc. Once you get it matched up, okay the change and restore the opacity to 100%.

A lot of people will do this much and be done with it, but usually some color correction is needed. One technique I use sometimes is to take 3 color samples from the original head - a shadow, a midtone, and a highlight. Then find corresponding places on the new head. Try to match the numbers on the new head to the ones on the original using curves or whatever. If they match, then the new head will have a similar color profile to the "o".

An easy way to save the values from the original is to use the color sampler tool to take the three values. Then print the screen and crop out everything except the values in the "Info" toolbar. Then put it somewhere where you can see it while you're working on the new head.

There's a lot more to it than this but hopefully you can make use of these pointers.

2004-06-04 12:52:16 PM Blues_X
an addition to modified danglers comment on head swaps...when altering skin tones to match, I find it easiest to alter the darkest skin to match the lightest. Darkening light skin to match darker skin hasn't given me results that I like. I usually use a hue/sat adjustment layer combined with a layer mask, grouped with the layer I want to change, to get the skintones to match

2004-10-06 10:01:30 PM matt4684 [TotalFark]
Ok, here is my method, (AKA the method of the person that gave it to me)
1. Select area that needs color matching (in this case, a face)
2. Save selection, (usually a good idea anyway) Select > Save Selection
3. Switch to channels palette and select the saved selection. It will be at the bottom, under then name that you saved the selection
4. Add a relatively small Gaussian Blur Filter > Blur >Gaussian Blur. You may find 2 pixels, or even 50 pixels appropriate, depending on area of selection and size of image
5. Return to layers palette. Click on layer that needs the adjustment, and load the selection Select > Load Selection
6. Add a Hue/Saturation adjustment layer. Layer > New Adjustment Layer > Hue/Saturation Click OK on the first screen. Now you're on your own. Tinker with the various adjustments until you arrive at the necessary tone or the closest that you can get, which may be quite far from the desired result. If that is the case, keep the adjustment layer, and add another. Repeat until desired result is obtained.

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