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Virtual PTZ and Full Image Recording
3.4.2 Full Image Recording
It is possible to record a full image, regardless of the live image stream that is being dis-
played. This ensures that the recording always contains the full image of the lens used,
even though the operator may have used the vPTZ features to zoom into the image in
order to examine a specic detail.
This means that you can use the vPTZ features in VGA image size to pan, tilt and zoom in
the live image while the camera is, for example, recording full images at 1 fps in MEGA or
6MP image size.
In MxManagementCenter, the recorded full images may be prepared for the user with the
vPTZ functions (for example, panning and zooming in on an image detail such as a doorway).
If full image recording is not activated, only the last displayed live image will be saved (save
what is seen). The mainbenet of live image storage is to ensure that the full power of the
camera processor is used for live image correction and maximum frame rates. The main
advantage of full image recording lies in the special functionality of the M16, in that it can
always maintain availability of a maximum size (full) image for later investigation, despite
vPTZ actions carried out on the live image. The mechanical limitations of motor-driven PTZ
cameras mean that they simply cannot provide this unique advantage to the user!
Notes
Post-event search in the full image: If you are using full image recording on M16 cameras,
you should use at least MEGA image size when storing. This will facilitate later searches in
MxManagementCenter. The advanced distortion correction features require this function
to deliver satisfactory image quality.
Full image recording on: Due to the increased processing time, full image recording
reduces the data rate of the live image stream, which may drop by around 10 to 30 per
-
cent. We therefore recommend reducing the frame rate for storage as much as possible
to aect the live image stream as little as possible.
Fullimagerecordingo: The event that triggered a video motion (VideoMotion, VM)
window may not be in the recorded sequences because the window was not displayed
at the time.
Stored full image:
Original camera image
without distortion or
image correction
Live image Stored Full Image Analysis in stored full image
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