This document provides instructions for setting up multiple cameras to capture motion capture data in a volumetric space. It recommends stationary mounting cameras on tripods in a half-circle arrangement about 2-3 meters high and 4 meters back from the subject to capture their full body and movements with extra space. Key steps include positioning cameras to maximize the capture volume, marking visibility boundaries on the floor, and checking the resultant capture area by walking through and reviewing the test recording.

1. SCENE SETUP

2. Step 1:
you need to stationary fix the cameras
using tripod or something similar

3. 3 cameras arrangement
#1
Capture Volume
1 - 1.5 m
#2
2 m
120-150
#3
1.5 m

4. Example
#2
#3
#1

5. The same scene in the virtual space
#1 #2 #3
#1
H=1.07 m
#2 #3
H=1.52 m
H=1.91 m

6. 4 cameras arrangement
#1
Capture Volume
#2
#3
#4
140-170

7. Example
#1 #2 #3 #4
#1
H=1.57 m
#2
H=2.03 m
#4
#3
H=1.49 m
H=1.50 m

8. Tip: If you're using the PS Eye camera, make
sure you have the lens set to the wide setting.
It's towards the blue dot.

9. Step 2: plug all cameras to PC
and run iPiRecorder
x.y.z
Mark appropriate
cameras here

10. Step 3: reorder cameras using drag-and-drop
(#1 – the leftmost, #N – the rightmost)
x.y.z
#1 #2 #3
#1
#2
#3

11. Tip: to determine what image corresponds to
what camera start recording, come close to each
camera and show on the fingers of its number,
then play the video
#3
   #2
#1

12. Note: #1 is the rightmost, when facing the
camera from the action area, but it should be
the leftmost in iPiRecorder (imagine, that you
look from camera point of view!)
#2
#3
#1
Left hand Right hand

13. Step 4:
direct cameras to maximize capture volume
Capture 
Volume

14. Step 5: mark on the ground boundaries of
torso, full-length and «hands up» visibility
ground
Full-length with hands up
Full-length visibility
Torso visibility (without foot tracking)

15. It’s convenient to use
sticky tape

16. Step 6:
check your resultant capture volume
1. start video recording in iPiRecorder
2. walk across the entire capture volume
approaching boundaries
3. play video and make sure that actor always
visible (full-length or only torso – depending
on your need to track feet)

18. Quote:
«The setup I've been using lately seems to work very
well for me: It's a half-circle arrangement, with the
cameras about 2 to 3 meters up, and far back enough
to see the full figure of the performer with plenty of
space around him. I have to check, but I think the
cameras are 4 meters or so from the performer, which
is almost as far as I can place them in my current shoot
space. (I wish I could put them back farther.)»
Greenlaw
Artist/Partner - Little Green Dog | Senior Digital Artist - Rhythm & Hues Studios