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

Keelung Yang

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

over 5 years ago

0 Brijesh Jadav over 5 years ago

TI__Guru**** 477595 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 Lucas Weaver over 5 years ago in reply to Brijesh Jadav

TI__Genius 13845 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 Keelung Yang over 5 years ago in reply to Lucas Weaver

Expert 1786 points

Hi Brijesh,

Yes. It's 7.1

0 Lucas Weaver over 5 years ago in reply to Keelung Yang

TI__Genius 13845 points

Hi Yang,

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

Regards,

Lucas

0 Keelung Yang over 5 years ago 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 Lucas Weaver over 5 years ago in reply to Keelung Yang

TI__Genius 13845 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 Keelung Yang over 5 years ago 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 Lucas Weaver over 5 years ago in reply to Keelung Yang

TI__Genius 13845 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

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