Page 10 of 12
August 2015
Vantage
Quick Start
Guide
Configure your system
3
For each camera, turn the aperture ring
(the ring with the f-stops) until the
aperture is fully open. Later you will turn
the ring back, increasing the f-stop
number and closing the aperture.
4
In the
System Resources
pane or
Selection
editor, select all the cameras by Shift-
clicking. In the
Properties
section at the
bottom of the window (or
Attributes
editor)
, change
Grayscale Mode
to
All
.
5
In the
System Resources
pane or
Selection
editor, select a camera. For each marker:
a.
In the view pane, zoom in to the center
of the marker.
Important
Vantage cameras are supplied pre-focused for
typical motion capture use, so in most
situations, no focusing is necessary. The
following step (b) is applicable only if you need
to re-focus the camera, otherwise, go straight
to step c.
b.
If required, turn the camera focus ring
(shown in the previous illustration)
until the 2D image of the marker in the
view pane is clear and sharp. As you
rotate the focus ring, note that the
marker images get smaller and then
begin to get larger again. Good focus is
when the marker is at its smallest size.
c.
Observe that, with the aperture fully
open, the markers appear fully
saturated, with very little grayscale
gradation and some merging, as in the
following image.
d.
Adjust the aperture ring to change the
amount of light that hits the image
sensor. Turn the aperture ring to close
the aperture and obtain good, clear
images of markers even when they are
close together.
If you turn the aperture ring too far,
until the aperture is almost closed, the
markers appear very small, lack any
bright grayscale pixels and the circle-
fitting is poor, as shown below.
Adjust the aperture ring so that the
markers are not too small, and the
center is just off-white (not fully
saturated) when viewed from the
middle of the volume.
6
Repeat Step 5 for each camera.
7
When you are happy with the focus and
aperture, to prevent the rings from moving
if the camera is knocked, tighten the
locking screws.
Caution
To avoid damaging the rings, do not over-
tighten the locking screws.
8
Select all of the cameras and change the
Grayscale Mode property back to Auto.
Содержание Vantage V16
Страница 1: ...Quick Start Guide...
