Users Manual

Note: Object detection can only be performed if the limit of 10 degrees angle offset between the base plane
normal and the line of sight of the rc_visard is not exceeded.
7.5.6 Parameters and status values
The SilhouetteMatch software component is called rc
_
silhouettematch in the REST-API. The user can explore
and configure the rc
_
silhouettematch component’s run-time parameters, e.g. for development and testing,
using the rc_visard Web GUI (Section 4.5) or Swagger UI (Section 8.2.4).
Parameter overview
This component offers the following run-time parameters.
Table 7.5.1: The rc
_
silhouettematch component’s run-time parame-
ters
Name Type Min Max Default Description
edge
_
sensitivity float64 0.1 1.0 0.6 sensitivity of the edge
detector
match
_
max
_
distance float64 0.0 10.0 2.5 maximum allowed
distance in pixels
between the template
and the detected
edges in the image
match
_
percentile float64 0.7 1.0 0.85 percentage of
template pixels that
must be within the
maximum distance to
successfully match
the template
max
_
number
_
of
_
detected
_
objects int32 1 20 10 maximum number of
detected objects
quality string - - High H(igh), M(edium), or
L(ow)
This component reports the following status values.
Table 7.5.2: The rc
_
silhouettematch component’s status values
Name Description
data
_
acquisition
_
time Time in seconds required by the last active service to acquire images
detect
_
service
_
time Processing time of the object dection, including data acquisition time
calibrate
_
service
_
time Processing time of the base-plane calibration, including data acquisition
time
last
_
timestamp
_
processed The timestamp of the last processed dataset
Description of run-time parameters
Each run-time parameter is represented by a row on the Web GUI’s SilhouetteMatch Module tab. The name in the
Web GUI is given in brackets behind the parameter name and the parameters are listed in the order they appear in
the Web GUI:
quality (Quality) Object detection can be performed on images with different resolutions: high (1280 x 960),
medium (640 x 480) and low (320 x 240). The lower the resolution, the lower the detection time, but the
fewer details of the objects are visible.
7.5. SilhouetteMatch 109