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Image Sections And Virtual PTZ Features
3.4 Image Sections And Virtual PTZ Features
You can use virtual (digital) zoom to scale the displayed image up or down and pan the
modified image area from side to side or tilt it up and down. These functions are called
PTZ features (Pan/Tilt/Zoom).
3.4.1 Zooming In On An Image Section
The camera image is often delivered in a larger resolution (e.g., MEGA 1280x960 pixels)
than is displayed in the main window (e.g., VGA 640x480 pixels). When you zoom, the local
application zoom is automatically activated. This means that only a section of the image
supplied by the camera is displayed in the main window instead of the entire image. All
further PTZ commands take place within the displayed area. These PTZ commands do not
influence the recording of camera-generated images. This allows specific image areas to
be focused on while the entire camera image continues to be recorded.
If the application zoom is active, you will see a small rectangle in the upper right-hand
corner of the image. The rectangle indicates the position of the zoomed area within the
overall camera image, and PTZ commands are visible in the movement of the rectangle
within the frame.
If further zooming in on the image makes the selected section of the camera image exactly
as large as it can be displayed in the main window (until the pixels are no longer reduced),
then the camera zoom is activated automatically. This means that zooming is now carried
out by the camera. PTZ commands take place in the complete image delivered by the
camera. PTZ commands change the live image of the camera and, if the full image is
currently not being recorded, these commands aect the recording as well. Activate full
image recording by pressing the Recorded Image button in the Image | Image Formats
and Views or the Image Formats and Views button.
PTZ commands performed in the camera are also indicated in the upper right-hand corner:
a hash symbol that changes with PTZ commands.
Caution
The camera zoom is only activated if the camera PTZ is already activated. To do so,
click on the Activate PTZ button. Otherwise, PTZ commands are only carried out within
the application zoom.
If all zoom commands should occur exclusively on the camera, then deactivate the application
zoom. To do this, open the shortcut menu of the Activate PTZ button.
In this shortcut menu, you can also activate the Zoom On Click option. By clicking on an
image area, you then zoom into it and move it to the center.