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IWR6843ISK-ODS: The max points number limited to 149 on the visualizer.

Shuting Hu
Prodigy 50 points
Part Number: IWR6843ISK-ODS
Other Parts Discussed in Thread: IWR6843ISK

Hi,

Using the IWR6843ISK, with 3D people counting visualizer, the max points number will be limited to 149.

Does this normal and which parameter makes this limitation?

Thanks

  • 0
    TI__Mastermind 37785 points

    Hi,

    This should be controlled in the trackingCfg command in the configuration file. See the tracker layer tuning guide for more details.

    https://dev.ti.com/tirex/explore/node?a=VLyFKFf__4.12.0&node=AHZY4H1u04B21l9zTRElvQ__VLyFKFf__4.12.0

    Best,

    Nate

  • 0 in reply to Nathan Block
    Prodigy 50 points

    Thanks for your reply. But I don't think so.

    The number of points displayed by visualizer represents the total number of detected points, and has nothing to do with tracking, right? 

    I tried it with my own radar board and this was the case both in Industrial Toolbox (4.12.0) and previous (4.11.0) versions. And so is the video in the “Overview" of TI's People Counting User's Guide.

    But unfortunately, so far I haven't found which parameter should be modified in the detection layer?

    Can you help me a little more? Thanks.

  • 0 in reply to Shuting Hu
    TI__Mastermind 37785 points

    Hi Shuting,

    Can you debug this further? I see that the number of radar points can be governed by the DOA_OUTPUT_MAXPOINTS parameter in DPU_radarProcess_process. Can you see if that function is keeping you from returning more points? I will continue to investigate on my end too.

    Best,
    Nate

  • 0 in reply to Nathan Block
    Prodigy 50 points

    Great, now we have located the cause of the problem. In the file path C:\ti\mmwave_industrial_toolbox_4_11_0\labs\common\src\dpu\capon3d\radarProcess.h

    #define DOA_OUTPUT_MAXPOINTS (MAX_DYNAMIC_CFAR_PNTS * 4 + MAX_STATIC_CFAR_PNTS)
    #define MAX_RESOLVED_OBJECTS_PER_FRAME DOA_OUTPUT_MAXPOINTS //zz: src is defined in odmInterface.h
    #define MAX_DYNAMIC_CFAR_PNTS 150
    #define MAX_STATIC_CFAR_PNTS 150

    I have tried to modify and rebuild the .bin file through CCS, but I don't know why the size of 3D_people_count_68xx_demo.bin has been increasing until 1.8GB and I manually terminated the program.


    Now the question is, can we modify this number, say 256? Could you please regenerate a .bin file if you can?

    Best,

    Shuting

  • 0 in reply to Shuting Hu
    TI__Mastermind 37785 points

    Hi Shuting,

    This number should be able to be increased, but understand that with more detected points, there will need to be a longer frame period to allow for more processing time. You should be able to regenerate the .bin file yourself. Simply build the DSS image, then the MSS image, and the bin file should be created. Do not worry if the DSS takes 5-7 minutes to build. It is quite large. I have never seen the bin become 1.8 GB. Can you make a new workspace, make your edits and try again? If it still has the problem, please post screenshots showing the steps you took.

    Best,

    Nate