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PROCESSOR-SDK-DRA8X-TDA4X: A mismatch between document and code about stereo disparity demo app

Keelung Yang
Expert 1786 points

Part Number: PROCESSOR-SDK-DRA8X-TDA4X

Hi,

I'm testing vision apps on sd card. And found an undocumented trick to run Stereo Disparity without changing app_stereo.cfg as descripted in document: export APP_STEREO_DATA_PATH environment variable.

export APP_STEREO_DATA_PATH=/opt/vision_apps/test_data/psdkra/stereo_test_data

And since stereo test_data is installed a required path "/opt/vision_apps" by document https://software-dl.ti.com/jacinto7/esd/processor-sdk-rtos-jacinto7/latest/exports/docs/vision_apps/docs/user_guide/RUN_INSTRUCTIONS.html

why not just export APP_STEREO_DATA_PATH in vision_apps_init.sh?  It's convenient and then there is no field changing is required.

A sample "app_stereo.cfg" for Stereo Depth is provided under "/opt/vision_apps/" on the rootfs partition. Update paths and other fields as required.

software-dl.ti.com/.../group_apps_basic_demos_app_stereo.html

  • 0
    TI__Guru**** 447865 points

    Hi Yang,

    vision apps init script just exports the top level path to the test data, then individual application can use it to point to their respective data path, which can be provided in the config file. We can also export, but this is just one selected method.

    Regards,

    Brijesh 

  • 0 in reply to Brijesh Jadav
    TI__Genius 13765 points

    Hi Yang,

    Thanks for the suggestion.  By the way, which SDK are you using?  I don't believe this was in place in SDK 7.0 as you mention, but this should be available in SDK 7.1.

    Regards,

    Lucas

  • 0 in reply to Lucas Weaver
    Expert 1786 points

    Hi Brijesh,

    Yes. It's 7.1

  • 0 in reply to Keelung Yang
    TI__Genius 13765 points

    Hi Yang,

    Could you please attach the vision_apps_init.sh script you are using?

    Regards,

    Lucas

  • 0 in reply to Lucas Weaver
    Expert 1786 points

    Hi Lucas,

    It's here:

    export VX_TEST_DATA_PATH=/opt/vision_apps/test_data

# Location of the input data for PTK demos
export TIAP_DATABASE_PATH=/opt/vision_apps/test_data_ptk
# Location of the input data for Stereo demo
export APP_STEREO_DATA_PATH=$VX_TEST_DATA_PATH/psdkra/stereo_test_data

# APP config path for PTK demos
export APP_CONFIG_BASE_PATH=/opt/vision_apps/ptk_app_cfg

/opt/vision_apps/vx_app_linux_arm_remote_log.out &

  • 0 in reply to Keelung Yang
    TI__Genius 13765 points

    Hi Yang,

    As you can see from the above, the APP_STEREO_DATA_PATH has been set as per the below line.  Please let me know if you have any further questions.

    export APP_STEREO_DATA_PATH=$VX_TEST_DATA_PATH/psdkra/stereo_test_data

    Regards,

    Lucas

  • 0 in reply to Lucas Weaver
    Expert 1786 points

    Hi Lucas,

    Then the key is the usage of words in offical documents, if needed is better then as required, what your opinion?

    No need to touch app_stereo.cfg to run this vision app.

  • 0 in reply to Keelung Yang
    TI__Genius 13765 points

    Hi Yang,

    I see, yes I agree that would be a more appropriate wording for this section.  We will make this update to include in future versions of the SDK.

    Regards,

    Lucas