track on face

[serious]

hi,

i'm doing a test wherein there are paint marks on a kid's face, it will fade in first as he looks behing to face the camera, then will eventually fade out. i used the roto procedure and i tracked my objects onto the moving face frame by frame. btw the footage is in slow motion so the frames are played in doubles. after finishing the test, it doesnt really look natural. can anyone give me tips on matching objects on live footage?

thanks,

(e
_ ; )
(e

"I am SPARTACUS!!!"

[pomme]

you said paint marks, can't it animate it using textures?

[serious]

In reply to:
you said paint marks, can't it animate it using textures?

what do you mean with using textures? what i did is i use skinned object for the paint marks, much like the ones used by soldiers on their face, but this time it is blue and white for each side of the cheek. even if i tracked it frame by frame, there still seems to be a bit of jiggling from the objects. i changed the interpolation to linear, but it still occurs. i dont know of any other method on accomplishing this. i want it to really match the movement of the kid's face. any help is highly appreciated.

thanks,

(e
_ ; )
(e

"I am SPARTACUS!!!"

[pomme]

i am not familiar with textureing, but i am quite sure that you can animate texture. Maybe wait for Urp to answer you. i dont' see him around for weeks. dont' know where is he.

[juan-sanchez]

What do you mean by 'it doesn't look natural" ?
Could it be that you need to track & match the textures to the face imagery prior to doubleing up.

If you're not doing this already it could be that you're noticing errors introduced by 'spline' interpolation between say frames 1.1 1.2, 2.1 2.3, 3.1 3.2 etc.
Another fix may be to ensure the tracking is using 'linear' interpolation....

Please don't blast me if I'm way off, I've never done this in Soft directly, as I have access to Eddie, which I believe sadly isn't available if you're running on a Win or Lin box....but there's always the lower end compositor packages you could try.

[serious]

In reply to:
What do you mean by 'it doesn't look natural" ?
Could it be that you need to track & match the textures to the face imagery prior to doubleing up.

If you're not doing this already it could be that you're noticing errors introduced by 'spline' interpolation between say frames 1.1 1.2, 2.1 2.3, 3.1 3.2 etc.
Another fix may be to ensure the tracking is using 'linear' interpolation....

Please don't blast me if I'm way off, I've never done this in Soft directly, as I have access to Eddie, which I believe sadly isn't available if you're running on a Win or Lin box....but there's always the lower end compositor packages you could try.

what i meant was there's still a bit of jiggling on the face after i tracked the movement. the other department here which uses adobe after effects and quantel henry said that this could be done better in a 3d program because the movement of the head is it will look back to face the camera so it will require 3d space to match the cheeks. the face paint will have foreshortening when the other cheek is in side view. what i did was i deformed my 2d skinned object on a spline and bent the spline to match the head's position then started to track the movement of the face. i also changed the interpolation to linear.

thanks,

(e
_ ; )
(e

"I am SPARTACUS!!!"