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XX112-36-00 Rev 909 Kollector Hybrid Network Digital Video Recorder Playing Back Recorded Video/Audio • 243

Defining ROIs

When the Museum Search window is opened, blue-colored grid blocks cover the entire frame in the Video

Display area, indicating that the change detection mechanism currently applies to the entire frame area.

You can focus the change detection mechanism on security-sensitive objects in the frame space by using the

window functions to vary the coverage of the colored grid blocks. (Only the segments covered by colored grid

blocks are considered for change detection purposes.)

For example, you can focus on windows or doors (as shown in the

picture opposite) to monitor opening/closing events.

The following options are provided:

Option Description

This button clears all the current colored grid blocks in the view. You can then use the Pencil tool to

define grid blocks for specific ROIs within the view surface.

NOTE: Change detection does not function unless ROIs are identified by colored grid blocks.

This button marks colored grid blocks over the entire window surface, meaning that change detection

will apply to the entire camera view. You can then use the Eraser tool to remove specific grid blocks.

When the Pencil tool is selected, the cursor becomes a pencil icon.

You can define ROIs by clicking and dragging over the required view area segments, thereby

drawing arrays of colored grid blocks.

The Tool Size Selector area includes buttons for three pencil sizes. According to the

selected size, the cursor draws a small (single block), medium (4-block) or large (16-block)

width of grid blocks per sweep.

When the Eraser tool is selected, the cursor becomes an eraser icon. You can erase ROI segments

by clicking and dragging over selected grid blocks, thereby erasing them.

The Tool Size Selector area includes buttons for three eraser sizes. According to the

selected size, the cursor erases a small (single block), medium (4-block) or large

(16-block) width of surface blocks per sweep.

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