Complex colour change (want to avoid rotoscoping if possible)

[Steve Roberts]

Roto and charge by the hour, not flat.

Why? When keying (or rotoing) the most important thing is the edge between foreground and background. You’re in rough shape there because the talent is warm-toned, and so close to the BG that the spill helps make his skin tones identical to the BG where the two meet.

This is pretty much a worst-case scenario, in my opinion: red wall, with bare-skinned talent touching the wall. At least he’s not wearing shorts.

For roto tips, search the COW for roto. There are ways to avoid doing it frame-by-frame.

Regarding the job, this is a client-driven revision, and if you don’t charge appropriately, I’m flying down there and giving you 50 lashes with a SCSI-1 cable. 🙂

Anybody else?

[Peter O’connell]

Primatte might work.

Good Luck
Pete

Wednesday; May 31, 2006
12:09 AM

barxseven.com

[X-claim]

Excuse my ignorance… Primatte? Is this a plugin?

Ha yeah unfortunately I think that roto will be the best solution too and yeah green(which incidently is the opposite colour of red) is the worst case scenario especially with the skin tones!!
The main problem is achieving the motion blur in my masking – damn low shutter speed.
And the client is most definately going to be charged by the hour on this one, the main problem is finding the hours to do it in my already hectic schedule… oh well.

Any more advice is much appreciated!

Thanks guys
Hayden

[Justin Productions]

Effects > Image Control > Change Color to…

Justin Productions
Tangerin01@hotmail.com
Adobe After Effects 6.5 Professional

[Tony Kloiber]

I’m guessing that your getting a completed spot and not the original shots (there is a whole long sidebar about producers screwing up and not going back and facing the music but I won’t go in to it). If you can’t go back to the original key and change the bkg element color there, you might have luck with keying a second time but this time remove the red and put the green back in (if it was green).

TonyTony

[X-claim]

Change colour to is nowhere near good enough for what i am trying to do, due to the tones of the skin being way to close to that of the wall unfortunately

[X-claim]

Yeah we have the completed version, the original was done by another post house (best in country) and has various ratios of keyed footage, studio setup and 3d modelling, i dont think that the client wants to go back to the other facility due to the high cost of getting them to make the changes even though they have all the original footage and models no doubt, and i quite like the challenge and i am sure my bosses like the $$$ so we won’t be recommending that to them obviously.
The wall has always been red, it was just the talent that was keyed over the footage/models.
Unfortunately it is looking more and more like i am going to have to use a complex series of masks to rotoscope it to change out the colour, just wanted to avoid this due to amount of work i already have on, but oh well, s*%t happens 😉

Thanks for the suggestions everyone.
Hayden

[Steve Roberts]

I just tried using multiple stacked instances of the Color Key effect, clicking around the talent, with a tolerance of around 10. Not so good: ugly edge, and no shadows remaining on the wall.

You know, even rotoing will be rough if you want to keep the shadows on the wall. I don’t envy you …

[Peter O’connell]

Hi I just took a stab at it with primatte and the tinderbox matte tool effect. I think if you pull 3 or 4 primatte keys, one for the hand, one for the shadow, one for the torso and legs and one for the face, then use loose garbage masks to bring them together into one matte you should be ok.
Here is a rough example where I mostly focused on getting the hand right, I also pulled a key for the shadows. There is still a bit of a red rim at the bottom but hey it’s 1:30 am. There are no masks used, just primatte, set matte and matte tool with a bit of curves to boost the original image befor pulling the key.

https://barxseven.com/post/img/greenwalltestcopy2GreenScreened.jpg

Hope this helps
Pete

Thursday; June 1, 2006
1:32 AM

barxseven.com

[X-claim]

Hi steve, yeah i tried that too, not really good enough eh, has to be perfect unfortunately.
I have done a roto test and then transfered the animated masks to a green solid with the blending mode turned onto colour, it will work it is just going to take me hours, but such is life.