Is it possible to remove object detection text and bounding boxes, but still use nvosd for top-left display text?

[akhilgurram.ai]

I am working on head count detection. I am using nvdsosd to display the head count. For this, I set these properties to remove the bounding boxes and the text. But when I set display-text=0, the head count is also gone.

{“display-text”: 1, “display-bbox”: 0}

Is it possible to remove object detection text “face 4” but not the display-text “head count=2” (as shown in the figure)?

Thank you,

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU) Orin Nano
• DeepStream Version 6.2
• JetPack Version (valid for Jetson only) 5.1.1
• NVIDIA GPU Driver Version (valid for GPU only)
• Issue Type( questions, new requirements, bugs)
• How to reproduce the issue ? (This is for bugs. Including which sample app is using, the configuration files content, the command line used and other details for reproducing)
• Requirement details( This is for new requirement. Including the module name-for which plugin or for which sample application, the function description)

[yuweiw]

You can try to find the text_paramsthat you need to remove in the display_meta structure. Then adjust the font_params to make the text_params transparent.

[akhilgurram.ai]

Thanks for the response @yuweiw.

I check the font_size in font_params under text_params. But I see there are 16 text_params and not sure which one should I get font_size to be 0 to disable the text “face4” on top of the object.

Nevertheless, I see the all of them are 0.

Can you please provide some reference codebase on how to handle it effectively?

[yuweiw]

You can refer to our c/c++ code nvosd_sink_pad_buffer_probe in /opt/nvidia/deepstream/deepstream/sources/apps/sample_apps/deepstream-avsync/deepstream_avsync_app.c, then simply convert it to Python code.
You can search for all txt_params in the for (l = display_meta_list; l != NULL; l = l->next) code first. If it turns out to be a face field, just set the font_params to make it transparent.

[akhilgurram.ai]

PS: I am using Deepstream 6.2 version. I dont find deepstream-avsync\deepstream_avsync_app.c file anywhere.

[yuweiw]

/opt/nvidia/deepstream/deepstream/sources/apps/sample_apps/deepstream-avsync/deepstream_avsync_app.c

[akhilgurram.ai]

I dont find that file in my /opt/nvidia/deepstream directory. Nevertheless, I did handle it by setting these two parameters to 0

obj_meta.text_params.font_params.font_size = 0
obj_meta.rect_params.border_width = 0

Thanks for the support @yuweiw

[yuweiw]

Glad to hear that. DeepStream should be installed in the following directory: /opt/nvidia/deepstream in your system. There are many C/C++ demo in the /opt/nvidia/deepstream/deepstream/sources/apps/sample_apps/ path that you can refer to.

[akhilgurram.ai]

Yes. It is installed at that location, but I dont know why I dont find deepstream-avsync folder inside it.

Am I missing something here?

[yuweiw]

Sorry, my fault. The deepstream-avsync app is just provided in dgpu version and you are working on Jetson. You can download our dgpu version of the package and refer to the code in it. https://developer.nvidia.com/deepstream-getting-started#downloads