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Tracking hand movement and simplifying path

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Baard KolstadTracking hand movement and simplifying path
by on Aug 31, 2016 at 3:49:51 pm

So I have a pretty specific question. What I'm trying to do is track the hand movement of someone, and draw a stroke along that path. Now I have managed to track hand movement, attach the path to a null and link an emitter to the null's position with Particular. The only issue with the result I'm getting is that the line it produces isn't really straight, it's more circles on top of each other (which is exactly what it is). I suppose that what I'm looking for is a way to simplify the path and/or straighten it out.

Image of the current result I'm getting:

The reason it's so clustered is also that the hand movement is very small.

Thanks in advance for all help!

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Dave LaRondeRe: Tracking hand movement and simplifying path
by on Aug 31, 2016 at 6:14:31 pm
Last Edited By Dave LaRonde on Aug 31, 2016 at 6:35:28 pm

Wow, your stroke must be pretty big. What happens if you reduce the stroke width.... or diameter.... or size.... whatever it's called?

I'm not in front of my AE machine at the moment, and the exact name escapes me.

And here's an alternative to the Stroke idea: using the motion track, animate the position of a dot and apply AE's Echo effect. It will create a series of dots that trail the current position and fade out over time.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA

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Baard KolstadRe: Tracking hand movement and simplifying path
by on Sep 1, 2016 at 8:16:24 am

I ended up using a script from aescripts called "simplifymasks" which did the job. Thanks for the reply Dave!

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