Control of Sensors Settings (Biases)

Metavision Player allows to control sensor settings (biases) when acquiring data from a live Prophesee’s camera.

For more information on available biases and their tuning, see Bias page.

Setting Sensor Settings Dynamically

To set sensor settings dynamically in GUI:

  • plug a Prophesee’s camera to the computer

  • start Metavision Player with --show-biases command line option:

Linux

metavision_player --show-biases

Windows

metavision_player.exe --show-biases
  • GUI controls will be shown on the screen

Metavision Player - Setting Biases in GUI
  • adjust sensor settings as required

Saving Sensor Settings to a BIAS File

To save sensor settings in a file:

  • plug a Prophesee’s camera to the computer

  • open a command prompt and move to a directory where you have write permission

  • start Metavision Player with a live Prophesee’s camera with --show-biases command line option:

Linux

cd /home/username
metavision_player --show-biases

Windows

cd C:\Users\%USERNAME%"
metavision_player.exe --show-biases
  • GUI controls will be shown on the screen

Metavision Player - Setting Biases in GUI
  • adjust sensor settings as required

  • press “b” key on the keyboard to save the adjusted settings to a BIAS file

  • sensor settings will be saved to a BIAS file (by default, out.bias) in the current directory; the output BIAS filename can be changed with the command line option --output-bias-file

  • to reset sensor settings to their default values, press “r” key

The output BIAS file can be used later in some of SDK applications and samples. The BIAS file can be also uploaded in Metavision Player as described in the following section.

Setting Sensor Settings from a BIAS File

To set sensor settings from an existing BIAS file:

  • plug a Prophesee’s camera to the computer

  • start Metavision Player with -b command line option and providing the full path to the BIAS file (for example here, we use one of standard BIAS files for Gen3.1 sensor that is installed together with the SDK):

Linux

metavision_player -b /usr/share/metavision/sdk/driver/biases/gen3.1_CD_standard.bias

Windows

metavision_player.exe -b "C:\Program Files\Prophesee\share\metavision\sdk\driver\biases\gen3.1_CD_standard.bias"
  • settings from the BIAS file will be applied on the sensor level, and events data from the camera will be shown in the viewer window on the screen