In the coordinate system above, parts of the object that are far away from the camera
will get a high range value, and parts that are close to the camera will get a low range
value. That is, the range value represents distance from the camera. If you view the 3D
image in a coordinate system that has its origo in the lower left corner, the 3D image
will appear upside down.
16.2
Features
The GenICam™ standard uses "feature" as a common word for parameters, commands,
and selectors.
The features that are used for Ruler3000 are listed in the following sections. Most of
the features comply with GenICam™ SFNC. There are also some custom features that
are described in separate tables.
The "Type" column defines the data type for a feature. GenICam defines a number of
interface classes for SFNC features, where each interface class corresponds to a data
type. For example, the interface class
IBoolean
corresponds to the data type
boolean
.
The "Access" column defines if the feature is readable ("R"), writable ("W"), or both
("RW"). "R(W)" means that for some selector values the feature is both read- and
writable, but for other selector values, it is just readable. In some cases, the read- and
writability of a certain parameter depends on the model and version of the device.
For further information, including detailed descriptions of the standard parameters, see
www.emva.org/standards-technology/genicam/
NOTE
There are parameter dependencies both within and between the feature groups, which
means that changing the value of one parameter might also change the value of others.
Examples:
•
The maximum
AcquisitionLineRate
value depends on the
Height
value (a larger num‐
ber of rows gives a lower maximum speed).
•
The maximum
ExposureTime
value (a longer exposure time gives a lower maximum
speed) depends on the
AcquisitionLineRate
value (
and
"High dynamic range (HDR) imaging", page 50
). In some cases, it depends on
Width
/
RectificationWidth
and data format/number of components when the band‐
width on the gigabit link is the limit.
NOTE
The parameters for 3D fully utilize the features of SFNC and use e.g. scale and offset
(and their chunk meta data counterparts) for all data to allow the receiver to transform
the data on the wire to the actual world or pixel coordinate systems.
16.2.1
Setting parameters in GenICam
16.2.1.1
Parameter categories
The parameters are grouped into categories, for instance,
Device control
,
GigEVision
,
Firmware update
and
Acquisition control
. These groups can be used by a configuration GUI
to show the parameters in a user-friendly way.
ANNEX
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O P E R A T I N G I N S T R U C T I O N S | Ruler3000
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Subject to change without notice
