Biases pre-sets

Biases pre-sets

Prophesee Event-Based sensors can be tuned for optimal functioning in a specific applications and in a particular environment condition by adjusting the sensor settings so-called biases.

On this page we provide several biases pre-sets for different applications. These pre-sets should be seen as a starting point for bias tuning for a particular application and not as a final solution. The final solution will depend on many factors and here we provide only a generic idea.


Biases pre-sets for GenX320 sensor

ApplicationSpeedbias_diffbias_diff_offbias_diff_onbias_fobias_hpfbias_refrWhat is seen
Min recommended*Low4119241900
Max recommended*High51506039127127
Default*Medium512825344010


Moving / changing objects
Low-light detectionLow51192419010Moving / changing objects
Drone tracking
Medium
51
40
40
29
0
82
Moving / changing objects
High-speed motion,
Object counting,
PSM (Particle Size Measurement)
High512637387425Fast moving objects
LED tracking**High51455550**1270High-frequency LED only
Active marker detection**High51127**78**50**1270Active marker only

* Based on Metavision SDK v5.x
** Outside of the recommended range

Biases pre-sets for IMX636 sensor

ApplicationSpeedbias_diffbias_diff_offbias_diff_onbias_fobias_hpfbias_refrWhat is seen
Min recommended*Low-25-35-85-350-20
Max recommended*High2319014055120235
Default*Medium000000Moving/changing objects
High-speed motion,
Object counting,
PSM (Particle Size Measurement)

High01650551100Fast moving objects
Active marker detection**High01806030140**0Active marker only

* Based on Metavision SDK v5.x
** Outside of the recommended range

Applying the biases pre-sets

Each biases pre-set can be downloaded as a *.bias or *.json file from the attachments to this page.
Each biases pre-set can be applied in one of the following ways:
  1. via a command line option "-j" followed by a *.json configuration file:
    1. metavision_viewer -j genx320_lowlight.json
  2. via a command line option "-b" followed by a *.bias file:
    1. metavision_viewer -b genx320_lowlight.bias
  3. in the code using Metavision API (in C++ or Python)

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