Infoseite // Light Painting in 3D Space



Frage von Coldie:


Have all the other day in an American forum already posted (but will not help) ... Now I try my luck once.

Hi there,

i want to create video including light painting. It will not be a film made by stop motion (like this one
- great spot, but not what I'd like to achieve)

I want to get moving the actors in the background creating light paintings in the foreground.
There are two possibilities to do that:
1st Get the shots and the light-ANIMATE paintings tracked to the (useless) light / finger draw with the actors (like in this example

2nd Get the shots, extract the lights by adjusting the curves and add a simle 'echo-effect' - so they are REALLY painting with the light. (Like in this example
This method can be improved by not extracting the light source - but rather recording it with a second camera from the same angle and nearly closed blend. So you extract the light s.recording-time.

I prefer the second one - and that is the problem.
I dont want to animate the light paintings (except for the simple echo effect) - it always looks 'animated': D, but i also do want to loose my 3D space by restricting the light paintings to a 2D layer-recorded.
Here is s.example that impressed me:


In the second shot (the man in the restaurant) draws a circle (not animated - real light) ...
BUT the circle has kind of depth and fits to the camera movement even in Z-Space. Ok ... fitting to the camera could be achieved by a 3-Track with boujou or PFTrack, how is this DEPTH created by simply recording the light on but a 2D layer?

I add a picture to underline my question (front-and side-view):
http://yfrog.com/4wlightpaintingquestionp

Thanks in advance

Hans

Space


Antwort von dietzemichi:

hi,
look at that time to:
http://library.creativecow.net/articles/kramer_andrew/nano.php

greeting
michi

Space





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