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IPNC RDK Histogram statistics

Vijay Patel
Prodigy 190 points

Hello,

I and using IPNC RDK 3.5 histogram to collect various statistics about captured image. In IssAlg_captTsk2A function there is one while loop which waits for data/statistics from H3A algorithm and once data/statistics received, it controls the sensor accordingly. Now when I print these statistics it is always constant irrespective of surrounding room light. There is  a chance I may miss something or do not know correct way to configure it or do not know about various configurations available which I can use to get desired statistics.

Can anyone assist/guide/help me to configure histogram correctly?


Thanks,

Vijay

  • 0
    TI__Guru**** 170625 points

    Vijay,

    I will notify the IPNC RDK team for help.

    Best regards,
    Pavel

  • 0 in reply to Pavel Botev
    TI__Expert 8920 points

    Hi,

    Are you checking all the AWB and AE values in the H3A buffer?

    You should observe the values 'ti2a_output_params.sensorExposure' and 'ti2a_output_params.sensorGain' output by the ALG_aewbRun() call under various lighting conditions. Under low light these values will be high.

    BTW do you use these values to update the sensor gain and exposure?

    Similarly observe the values of WB gains like 'ti2a_output_params.ipipe_awb_gain.rGain' which are applied in the Iss_capt2AUpdate() fn.

    If the sensor gains and WB gains are changing then H3A is providing proper data.

    regards,

    Anand

  • 0 in reply to Anand Kulkarni71405
    Prodigy 190 points

    Hi Anand,

    Thanks for your response.

    I observed the value of ti2a_output_params.sensorGain and it is changing from 1000 to 32000 based on surrounding light but there is no change in ti2a_output_params.sensorExposure it is constant (16600) all the time.

    Do you have any idea about this?

    Thanks,

    Vijay Patel