The requirements for cameras when you work with the Fire detection and Smoke detection modules are given in the following table.

Camera

  • We recommend using color cameras. When you use black and white cameras, the recognition quality can be much worse.
  • Resolution must be at least 640x360 pixels.
  • Number of frames: the detection response rate depends on the number of frames per second; by default (once per 10 seconds) in most cases it is enough to detect a fire/smoke that lasts more than one minute
Lighting
  • Fire/smoke must be visually separable from the background

Object images

  • The minimum area of fire/smoke in the frame depends on the neural network used. For a standard neural network (see Configuring the Fire detection and Smoke detection modules), the area of fire/smoke must be at least 10% of the frame area. In some cases, when the fire is well contained, the width/height of the fire zone as 1-3% of the width/height of the frame can be sufficient for the detector

If you specify the surveillance area on the video image, then the above requirements are relevant for it and not for the entire frame (see Configuring the Fire detection and Smoke detection modules).

We don't guarantee the correct operation of fire and smoke detectors when you use the video stream and frames that were masked before they got to Axxon PSIM by the IP camera or similar means and methods.