Dedicated Mircros Digital Sprite 2 Guia de preparacion descargar pdf (Pagina 34)

Function Description

Camera This is a drop down list of the video inputs on the unit, selecting

one of the inputs will display the corresponding video source. This

is active when either Activity or VMD is selected.

Zone There are 16 advanced VMD zones that can be individually

congured, select the zone from the drop down list. This is active

when VMD is selected.

Mode The zone mode identies when the reference image is taken for

triggering VMD. The options are:

Normal - the reference image is updated approx. 1/second so this

will only allow small changes in the scene without triggering

Last trigger - the reference image is only updated when the VMD

is triggered and would be used under controlled lighting, i.e. so

there are no false triggers due to ambient light changes

Static - the reference image is collected on startup and is never

updated. This would be used in ‘sterile’ areas where there are no

changes expected

Zone disabled - this will disable the zone mode.

This is active when VMD is selected.

Pixel Count (%) This value is set as a percentage and equates to the percentage

of pixels in the selected zone that must change for the VMD event

to be triggered.

This is active when VMD is selected.

Pixel Change (%) This setting is a percentage value of the overall change required

in the greyscale to be included in the pixel count. The percentage

change is dened over the complete range of black to white, a

100% pixel change would be from black to peak white.

This is active when VMD is selected.

Sensitivity This option is displayed when Activity is selected and allows the

sensitivity of the activity grid being congured to be selected.

There are ve sensitivity settings to select from: Indoor high,

Indoor low, Outdoor high, Outdoor low, Very low.

VMD / Activity Select whether the grid display will be for VMD (4 x 4 grid) or

Activity (16 x 16 grid)

Clear Cells Removes all dened zones from the image.

Default Grid Displays the default grid of VMD or activity zones over the whole

image.

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Dedicated Mircros Digital Sprite 2 Guia de preparacion Pagina 34