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RTOS/TDA3XEVM: TDA3x: Rear view panorama usecase FOV change

Chirag Vaghela
Intellectual 680 points
Part Number: TDA3XEVM

Tool/software: TI-RTOS

Hi Team,

I am using TDA3xxEVM reference board and sensor camera is OV10640. I am running rear view panorama usecase. As i can see that camera result FOV is very less in output.

when i am running mosaic view (ISS usecase) at that time my output view FOV is good, but in rear view panorama usecase it is reducing very much and my output also zoomed and clarity is not good. i want to change FOV in rear view panorama usecase.

can anyone suggest some idea or what all are the parameter i have to changed?

  • 0
    TI__Mastermind 42515 points
    Hi Chirag,

    I have forwarded your question to VisionSDK experts.

    Regards,
    Yordan
  • 0 in reply to Yordan Kamenov
    TI__Intellectual 1530 points

    Hi,

    The Panorama algorithm sets the FOV to mimic a real sized car usecase. 

    To change the FOV you can try changing the following parameters in algplugins/rear_view_panorama/CommonDefs.h:

    VC_VF & VC_WALL_DISTANCE

    Regards

    Shashank

  • 0 in reply to Shashank Dabral
    Intellectual 680 points
    Hi Shashank,

    let me explain our observation while changing VC_VF & VC_WALL_DISTANCE parameter.

    When we are changing VC_VF & VC_WALL_DISTANCE, we can see FOV changes, but We are seeing that input from cameras are getting cropped or focusing on certain ROI. and also sometimes we are getting distorted output.(like green lines).

    So We need to change ROI as per our requirement, so can you please help on which function/files have definition/control over ROI/FOV.

    Thanks,
    Chirag
  • 0 in reply to Chirag Vaghela
    TI__Intellectual 1530 points

    Hi,

    As of now these are the only two parameters that are exposed for FOV change. 

    There are limitations when we change these views, so for instance if you are seeing the green lines etc, then your FOV is causing the synthesized view to look for a region that lies outside the camera boundary. In this case you would have to use a higher resolution camera with higher FOV lens.

    Also, as of current alignment, this code is provided as a reference code only, so detailed support cannot be provided.

    Regards

    Shashank