Digital skin Grafting in compositing - Shivaji VFX making videos

[mohanvsm]

'
why not use make up (& then a bit of digital smoohting if required)?
prehaps it was a case of talent politics - please enlighten..

good point, But even if we do partial makeup, for digital enhancement (translucent effect, fresh fleshy feel) we have to follow entire process like shooting the reference skin in same lighting condition, warping it on hero's face.....

So we skip the makeup and did it entirely in Digital.

V.Srinivas M mohan
Vfx supervisor

[naveen]

You did not elaborate the process exactly what you did to achieve the result.I am not sure but ain't you guys have done nothing different then CC using 'match color' option found under 'histogram' tab in 'color correction' node,the grid warp done(roughly) just to get the position matched with original plate so as to get the color information,highlights n all,tedious part could be the detailed roto,isnt it?correct me please if its not the way you approached.

[jbidwell]

This is a cool example of "Vanity VFX" using mesh warping and CC to change an actor's appearance. (Although Lola used Flame instead of Fusion)

[mohanvsm]

I am not sure but ain't you guys have done nothing different then CC using 'match color' option found under 'histogram' tab in 'color correction' node,the grid warp done(roughly) just to get the position matched with original plate so as to get the color information,highlights n all,tedious part could be the detailed roto,isnt it?

pl chk this image in depth. Hope u will understand whether it is texture warping or just simple Color Correction.



Don't look at Sun glass reflections it has taken care in final stage.

V.Srinivas M mohan

[mohanvsm]

Some more technical details: we worked on 4k resolution. we used Combustion from Discreet for the roto work along with Fusion. Since we worked on 4k DPX LOG files, for Film Look we used CINESPACE from Rising Sun Research. Thanks for the nice tool.

V.Srinivas M mohan

[k4k]

keep up the gud work mohan...

[selvag]

can u explain .... exactly wat u did to get that effect....

thx

[bfloch]

I am also very doubtfull that it was worth the work.

I tried 5 mins in PS and know that this is far from perfect, but with good rotos and a more advanced color correction I am sure you could come up with good results as well.
I can of course understand that you wanted to keep the different skin characteristics. I am just not sure if the extra work pays off.

I hope you don't mind I used your picture for this test. I will delete it if you do.

Still you did a good job.

Cheers
Blazej

[Hugh]

Very very cool work there...

Milho: The trouble with that method is, as he mentioned earlier, the translucence of the skin, which you don't get with makeup or colour correction. Darker skin has a lot less translucense, so things like the shadows aren't as red as they would be otherwise. Compare the shadows to the sides of his nose in yours and theirs, and also just above the bridge of the glasses...

[naveen]

pl chk this image in depth. Hope u will understand whether it is texture warping or just simple Color Correction.



Don't look at Sun glass reflections it has taken care in final stage.

V.Srinivas M mohan

See first of all no offence,i really appreciate the job that you guys have done but i really want to know the method that you guys have used.as u have mentioned that u did warped the texture of the reference girl to match exactly with actors movement,
in doing so the textures are not suppose to be same in your before & after image,i hope you will agry with this,moreover the breakdowns of three diffrent shots at cgarena.com also represents the roughly warped image.

[popo_83]

Hi everyone,

According to my belief, the process includes or can be achieved in pretty much this manner...

1. Shoot the artist first n then with almost the same magnification n lights on the existing sets, with a 'white' female.

2. Scan on high res. probably on 4k.

3. Input both the Image sequences in DF or F5 with 32bit Float depth.

4. Get necessary Roto's/Mattes done.

5. Connect ColourCorrection(Cc) node to the main artist layer n the white female layer to the ref. input of Cc with their respective Roto's ofcourse. Temporarily, merge both layers with half opacity n warp the ref.(females) image roughly just to match the position to of the main artist for better ref. of shadows, mids n highs. Connect the warped ref to Cc. Go to the Histogram tab n say Match Colour, smoothen out the curve for better results...Without actually revealing unnecessary Grains during process. If necessary u might need to roughly roto out the female(skin matte) for better results. Further if required play with contrast levels for Hairs to go young.

6. Fine Tuning\necessary touch-ups for uncessary edges.

This provides the exact required translucency n as the ref.(female) is just the 'reference' for those colours to be corrected in all mids, highs n lows, the texture n lighting r maintained from the original input, that is ur main artist layer.

I'm aware that some of the above processes has been already discussed...But after being the 3rd & the 5th point mentioned... this might be of some help.

I Hope i have not skipped any required processes.... except for 'Rendering'.

-popo

[mohanvsm]

See first of all no offence,i really appreciate the job that you guys have done but i really want to know the method that you guys have used.as u have mentioned that u did warped the texture of the reference girl to match exactly with actors movement,
in doing so the textures are not suppose to be same in your before & after image,i hope you will agry with this,moreover the breakdowns of three diffrent shots at cgarena.com also represents the roughly warped image.

As I have mention earlier
"We have used nearly 80% of the reference girl skin on to the hero’s skin without loosing his expressions."

As U pointed out same texture with arrows in before and after images, I am sure u can point out foreign skin which we used in final image.

For getting the final result we used lot of blending techniques between girl and hero skin to preserve hero's expressions. If the skin was not warped properly along with his movements and expressions we can see 2 layers of skin moving differently. obviously that is bad comp. And that is the task I was mention as a difficult one.

[jbidwell]

It looks like the actor's tongue was included with the caucasian CC also. It looks a little too pink to me...

Whatever technique you used, the end result is very convincing.

I hope you'll share a breakdown with us!

[mohanvsm]

It looks like the actor's tongue was included with the caucasian CC also. It looks a little too pink to me...
Whatever technique you used, the end result is very convincing.

we treated mouth separately.
we enhanced teeth color towards higher temperature. And adjusted tung and lips tone to gel with skin color.

I hope you'll share a breakdown with us!

Pl chk the breakdown I posted it earlier.

The processes of DIGITAL SKIN GRAFTING

• We choose the female reference because of soft skin, fleshy cheeks and absence of shave line.
• We shot the reference girl for all the shots with same action and lighting condition, since we have to graft the same skin.
• Each and every frame of the hero’s skin portions was separated with the Rotoscoping process.
• The speed of the action of the hero and the reference girl was matched. This was a difficult task because no two persons act similarly.
• We used Grid Wrapping technique to match both the expressions. Again this was difficult as well as time consuming task.
• We have used nearly 80% of the reference girl skin on to the hero’s skin without loosing his expressions.

[naveen]

Could you show us please your Fusion Flow containing the comp you did for this along with its quicktime render?