QNAP Security VioStor NVR (Version: 4.1.2) - Manual (Page 76)

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k. Dewarp panomorph images: for the specific camera models with panomorph lens
Before using this feature, you need to select the ‘Enable panomorph support’ option in
the recording settings page. Right click the channel and enable the function. After
that, you can select Mount type, including wall, ceiling, and floor and then select
Dewarping mode, including Perimeter mode, Quad mode, and PTZ mode.
Remark 1: To know the camera models which can be installed with panomorph lens,
please visit
http://www.immervision.com/en/security/security_partners/security_partners_2.php .
Remark 2: The function is only available when the resolution of the video stream is
higher than 640x480 on the monitoring page.
Remark 3: If Dewarping mode is PTZ mode, for the channel, you can use PTZ control
panel or mouse (by clicking and holding down the mouse left button, and then moving
the mouse or turning the mouse wheel) to change viewing angles or zooming in/out the
screen. If Dewarping mode is Quad mode, the above methods can also be applied to
operate PTZ functions in each divided screen.