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IWR6843: Area scanner lab - update background information

S Abd
Prodigy 90 points
Part Number: IWR6843

Hello,

My understanding is that the area scanner lab records static background information at boot time, and uses this stored heatmap to detect newly introduced objects. My question is: Can the background information be updated? In some situations, the background at start time is no longer sufficient (new static objects have been introduced/removed, which we don't want to detect as targets). Can we modify the area scanner lab so that it records a new background heatmap? 

Thanks a lot. 

  • 0
    TI__Mastermind 23177 points

    Hello,

    Yes that should be possible, but my question to you is how are you planning on letting the device know when the background at start time is no longer sufficient?

    Best Regards,

    Pedrhom

  • 0 in reply to Pedrhom Nafisi
    Prodigy 90 points

    I am thinking of using the number of detected objects as an indicator that the background has changed. We are expecting one or two objects to be introduced to the scene, and if we find that the number of detected objects is five or more (for example), we will assume that these are not true targets but rather a change in the background clutter happened.

    If possible, would you kindly guide me to the place in the code where this change can be applied? 

    I am thinking to do this in the file "staticdetprocdsp.c", to adaptively change the StaticCfg.recordingMode, do you think this is the right place to do it?

    Thanks a lot,

    Abd

  • +1 in reply to S Abd
    TI__Mastermind 23177 points

    Hello,

    Yes that should be correct, you can add an if statement that checks if it is not in heatmap recording mode, and the number of detected objects is higher than desired, and force it back into recording static background information.

    Best Regards,

    Pedrhom