In this day and age of digital revolution, it should be no surprise that make up artists are not the only coverage actors and actresses receive these days for blemishes, scars, shine, wrinkles, and more. Digital beauty retouching is a growing niche market where VFX artists are now able to accurately track the motion of their subjects face throughout the course of the video clip, and then isolate the blemished areas and clean them up further and more accurate than any makeup can cover. In a previous tutorial, I showed how to create a basic cover that can eliminate wrinkles and basic textured blemishes. In this tutorial, I wanted to focus on the harsher blemishes, scars, and birth marks that tend to stand out more prominently, and need some more direct care to treat.
I will break the technique down into three steps:
– Creating an isolated primary track
– Creating a Linked Mask of a Clear Area
– Exporting and Final Composite in After Effects
CREATING AN ISOLATED PRIMARY MASK
With your footage in Mocha, we are first going to create an isolated mask around the prominent blemish, scar, or birthmark. In my sample footage I am going to focus on two areas – one blemish and one mole as an example.
In the previous, I had you create a general track mask around the whole face. This time, since the blemish area is so prominent, you can zoom in and create a mask just around the problem area itself using the X spline.
Below the timeline you will find a set of arrows with a letter T by them indicating Track forward and backward. Go ahead and track forward to the end of the clip.
In your layers panel you can rename the layers to BLEMISH 1 & BLEMISH 2 just to keep things organized.
CREATING A LINKED MASK OF A CLEAR AREA
Using this tracked data, we are now going to create new layer masks just slightly next to the source blemishes in order to capture a blemish-free and clear reference area to composite over the blemish itself. With the X spline tool, go ahead and create a new layer mask just next to each isolated blemish.
I also went ahead and changed the color of the cover mask to a blue and renamed the layers to COVER 1 & COVER 2 to keep things organized.
At this point, LINK both COVER 1 and COVER 2 with their partnering BLEMISH 1 and BLEMISH 2. That way, both covers follow along perfectly with their blemish counterparts.
Scrub through the footage or simply let it playback and make sure both covers follow perfectly.
EXPORTING AND FINAL COMPOSITE
In this situation you will want to export each cover layer one at a time because you will be compositing each potentially slightly different from one another and will need individual control. With the first cover layer selected, go to EXPORT SHAPE DATA in the lower right of the program window, select it, and choose COPY TO CLIPBOARD on the pop up window.
Back in after effects we are going to DUPLICATE the source video (CMD + D). With the duplicate video selected go to EDIT > PASTE MOCHA MASK.
Zoom in on the cover mask and now click and drag the mask over the blemish.
Open up the Mask controls under the duplicate layer and increase the feather and slightly decrease the expansion. You can also SOLO the layer to see how much feather you are applying.
You can now play back the video and make sure the feather and expansion amount is adjusted appropriately so that it looks natural and properly covers the blemish. Repeat the process for Blem 2 and for any other scar or birth mark you need to digitally remove.