LMI Technologies Chroma+scan 21X5, Руководство пользователя, Страница: 27 / 29

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6.2.5 FireSync Client Options
6.2.5.1 Video Tab
Select a sensor in the device tree, and then select the Video tab. Press the Play button
(black triangle) in the toolbar, and observe the incoming video images from each profile
camera (Video-0, Video-1 tabs). If there is an object within the field of view of the
sensors, you will see laser images appear in the display. Note that you can right-click on
the image display for options. Press the
Stop button (black square) to finish.
Video can be delivered with different exposure. Operation shows video at the exposure
period used during full speed scanning in saw mill operation. Diagnostic is showing
video with a long exposure and slow frame rate. This can be useful to reveal from where
unwanted light is showing up in the view of the cameras in the sensor. It is also possible
to show detected spots in the video by enabling
Display Centroids . Note that it is not
possible to change video mode or turn on and off centroids during data streaming. Stop
the system, change mode, and the start the system again.
The Video tab also allows the user to set sensor dead zones to filter out point light
sources which have a fixed location in the view of the sensor (e.g. a floodlight in the
ceiling). The dead zone calibration is performed as the video is running. The dead
zones are indicated in the video with red. Adjust the size of the zones with the slider.
The dead zones will be committed to the sensor when the system is stopped by pressing
the
Stop button. Make sure there is no object in the scanner frame before enabling this
feature. To remove all dead zones from a sensor, set the slider to 255, and then
press Stop to commit an empty bit mask to the sensor . The dead zone calibration
should be considered a calibration step, similar to system calibration. It is not
recommended to write dead zone files to the sensor storage on a regular basis, due to
the slow write time (normally 3 seconds, but occasionally up to 2 minutes).
Note! When Centroid Overlay is enabled, the Deadzone Calibration is disabled. Dead
zone calibration should not be performed when the video contains centroid data, since it
directly modifies the pixel content of the image stream, resulting in invalid masks.