![Detectors](/images/new-backgrounds/44286/4428663x1.webp)
AXIS
Detectors
Parameter | Object Size | History | Sensitivity |
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Description | Object size relative to window | Object memory length. | Difference in luminance |
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| between background and |
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| object. |
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High level (100%) | Only very large objects trigger | An object that appears in | Ordinary colored objects on |
| motion detection. | the window triggers motion | ordinary backgrounds trigger |
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| detection for a long time | motion detection. |
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| before it is considered as |
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Medium level (50%) |
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| A large difference in luminance |
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| is required to trigger motion |
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| detection. |
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Low level (0%) | Even very small objects trigger | An object that appears in | Only very bright objects on |
| motion detection. | the window triggers motion | a dark background trigger |
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| detection only for a very short | motion detection. |
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| time before it is considered as |
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Recommended values | |||
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Default values | 15% | 90% | 90% |
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Note
•To trigger on small objects or movements, use several small motion detection windows rather than one large window and select a low object size.
•To avoid triggering on small objects, select a high object size.
•While monitoring an area where moving objects are not expected, select a high history level. This will cause motion detection to trigger as long as the object is present in the window.
•To only detect flashing light, select a low sensitivity. In other cases high sensitivity is recommended.
Basic Video Analytics
The Basic Video Analytics section include the following detectors:
•Object Removed, see page 32
•Enter/Exit Detector, see page 33
•Fence Detector, see page 34
•Object Counter, see page 34
Important
•To activate a detector, the saved preset must be selected in the
•The detector will not register an object if the speed of the object is too high, if the object is too close to the camera, if the difference in luminance between the object and the background is insufficient, or if the camera is autofocusing.
Object Removed
Object Removed is used to trigger an alarm if a detected object within a
Note
Use the Drawing Opacity slidebar to define how transparent the area of interest or object size shape should be. Note that this change will not be saved.
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