Technical Specs

mindepth (Minimum Distance) The minimum distance is the smallest distance from the sensor at which mea-
surements should be possible. Larger values implicitly reduce the disparity range, which also reduces the
computation time. The minimum distance is given in meters.
maxdepth (Maximum Distance) The maximum distance is the largest distance from the sensor at which mea-
surements should be possible. Pixels with larger distance values are set to invalid in the disparity image.
Setting this value to its maximum permits values up to infinity. The maximum distance is given in meters.
The same parameters are also available over the GenICam interface with slightly different names and partly with
different data types (see GigE Vision 2.0/GenICam image interface, Section 8.1).
6.2.5 Services
The stereo matching component offers the following services for persisting and restoring parameter settings.
acquisition
_
trigger This call signals the module to perform stereo matching of the next available images, if
the parameter acquisition
_
mode is set to SingleFrame. An error is returned if the acquisition
_
mode is
set to Continuous.
This service requires no arguments.
This service returns the following response:
{
"return
_
code": {
"message": "string",
"value": "int16"
}
}
Possible return codes are shown below.
Table 6.2.3: Possible return codes of the acquisition
_
trigger service
call.
Code Description
0 Success
-8 Triggering is only possible in SingleFrame acquisition mode
101 Trigger is ignored, because there is a trigger call pending
102 Trigger is ignored, because there are no subscribers
save
_
parameters (Save) With this service call, the stereo matching component’s current parameter settings are
persisted to the rc_visard. That is, these values are applied even after reboot.
This service requires no arguments.
This service returns no response.
reset
_
defaults (Reset) Restores and applies the default values for this component’s parameters (“factory re-
set”).
Warning: The user must be aware that calling this service causes the current parameter settings for the
stereo matching component to be irrecoverably lost.
This service requires no arguments.
This service returns no response.
6.2. Stereo matching 39