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Motion detection runs properly if video match the following requirementsRequirements for the operation of the Motion detection and its sub-tools are given in the table:
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| Scene and camera angle |
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In order to detect the object it is to be visible at not less than 8 frames.
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Some requirements depend on whether only a video motion detection will be used, or VMD-based scene analytics detection tools will be used as well. The you use the Motion detection only or its sub-tools (see Standard detection sub-tools). The difference in requirements is shown in the table:
| Requirements |
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| Motion detection | Motion detection sub-tools |
|---|---|
Resolution in pixels |
| At least 320х240 |
| At least 640х360 |
| FPS |
| At least 1 |
| At least 6 |
Image
Work with image | Analytics only works with color images |
| Analytics works with both gray and color images |
Size of objects in the image
The width and height of the objects in the image must be not less than 1% of the frame size (if resolution is over 704x576 pixels) or 15 pixels for lower resolution
The width or height of the objects in the image must be not less than 1% of the frame size (if resolution is over 1920x1080 pixels) or 15 pixels for lower resolution
Size of objects in the image relative to the frame size
The width and height of the objects in the image must not exceed 75% of the frame size
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