Requirements for the operation of the stopped object detector are the following:
| Camera | - Resolution must be at least 640x360 pixels. We also don't recommend using a resolution higher than 1920×1080, since a higher resolution doesn't increase the detection quality but significantly increases the consumption of resources. The optimal resolution for solving typical tasks is 1280x720.
- The frame rate per second in the video stream from the camera is at least 8 for solving typical tasks.
- Stopped object detector-based analytic works with both colorless (gray) and color images. We recommend using color cameras. When you use black-and-white cameras, the recognition quality can be noticeably worse.
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| Lighting | - Lighting in the scene is at least 50 lux. In conditions of insufficient or excessive lighting (night or light-striking), stable operation of the analytics isn't guaranteed.
- No abrupt changes in lighting
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| Scene and camera angle | - Moving objects are visually separable from each other.
- The background is mostly static and doesn't change abruptly.
- Moving objects are minimally obscured by static objects in the scene (columns, trees, and so on).
- The analyzed scene doesn't have reflective surfaces and sharp shadows from moving objects. If present, they must be masked.
- Camera shake doesn't result in image offsets greater than 1% of the frame size
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