Documentation for C-Werk 2.0.

Previous page Functions of the PPE detection tool (VL)  Objects image requirements for PPE detection tool (VL) Next page

The PPE detection tool (VL) operation imposes the following requirements:

  1. To the video stream from the camera:
    1. The resolution is at least 640x360 pixels. It is also not recommended to use a resolution higher than 1920×1080, since higher resolution does not increase the detection quality, but significantly increases the consumption of resources. The optimal resolution for solving typical tasks is 1920х1080.
    2. The frame rate per second in the video stream from the camera is at least 13 for solving typical tasks.
    3. Color image only.
  2. To lighting:
    1. Lighting in the scene is at least 200 lux per square meter. In conditions of insufficient or excessive lighting (night or light-striking), stable operation of the video analytics is not guaranteed.
    2. There are no abrupt changes in lighting.
  3. To the scene and camera angle:
    1. Moving objects are visually separable from each other.
    2. The background is mostly static and does not change abruptly.
    3. There are no products made of rods in the detection area.
    4. Moving objects are minimally obscured by static objects in the scene (columns, trees, etc.).
    5. Avoid large obstructions in the camera FOV (columns, tower cranes, stacked materials, etc.). They will obscure the detected objects and cause track breaks. If obstructions cannot be avoided, it is recommended not to place them in the center of the frame.
    6. The analyzed scene does not have reflective surfaces and sharp shadows from moving objects. If present, they must be masked.
    7. The analyzed scene does not have strong light flashes (spotlights, active welding zones).
    8. Camera shake does not result in image offsets greater than 1% of the frame size.
    9. Shooting angle without a strong camera tilt.
    10. To improve the quality of the video stream, the camera lens must be cleaned of heavy dirt. It is not recommended to locate cameras above the material unloading area or near ventilation shafts.

Attention!

Correct operation of the detection tool is not guaranteed when using a fish-eye lens.

Hardware requirements for neural analytics operation

Objects image requirements for PPE detection tool (VL)

  • No labels