deepstream-app[fonts]

Accelerated Computing Intelligent Video Analytics DeepStream SDK
1

How do I add different colors/fonts for secondary classification /detection results?

display_meta->text_params[0].y_offset = 20;
  display_meta->text_params[0].x_offset = 20;
  display_meta->text_params[0].font_params.font_color = (NvOSD_ColorParams) {
  0, 1, 0, 1};
  display_meta->text_params[0].font_params.font_size =
      appCtx->config.osd_config.text_size * 1.5;
  display_meta->text_params[0].font_params.font_name = "Serif";
  display_meta->text_params[0].set_bg_clr = 1;
  display_meta->text_params[0].text_bg_clr = (NvOSD_ColorParams) {
  0, 0, 0, 1.0};

if(nvds_enable_latency_measurement) {
    g_mutex_lock (&appCtx->latency_lock);
    latency_info = &appCtx->latency_info[index];
    display_meta->num_labels++;
    display_meta->text_params[1].display_text = g_strdup_printf ("Latency: %lf",
        latency_info->latency);
    g_mutex_unlock (&appCtx->latency_lock);

    display_meta->text_params[1].y_offset = (display_meta->text_params[0].y_offset * 2 )+
      display_meta->text_params[0].font_params.font_size;
    display_meta->text_params[1].x_offset = 20;
    display_meta->text_params[1].font_params.font_color = (NvOSD_ColorParams) {
      0, 1, 0, 1};
    display_meta->text_params[1].font_params.font_size =
      appCtx->config.osd_config.text_size * 1.5;
    display_meta->text_params[1].font_params.font_name = "Arial";
    display_meta->text_params[1].set_bg_clr = 1;
    display_meta->text_params[1].text_bg_clr = (NvOSD_ColorParams) {
      0, 0, 0, 1.0};
  }
2

Hi,
Could you share how we can reproduce the issue you are facing? So that we can check and give suggestion. Maybe a patch on deepstream-test2 or enable dsexample in deepstream-app.

3

Hi,

fonts and color can be updated directly from the configure file.

https://docs.nvidia.com/metropolis/deepstream/4.0/dev-guide/index.html#page/DeepStream_Development_Guide%2Fdeepstream_app_config.3.2.html%23wwpID0EQHA

Key         Meaning                                                                   Type and Value ...

text-color  The color of the text that describes the objects, in RGBA format.         R;G;B;A Float,
                                                                                      0≤R,G,B,A≤1
font        Name of the font for text that describes the objects.               
            Enter the shell command fc-list to display the names of available fonts.  String

Thanks.

4

Hi Dane, Aasta,

How do we add next line “\n” to results from secondary classifiers

How can we put an const text on screen from various sources.

5

Hi,
On DS4.0.1, it is not supported. Please check the following post:
[url]On screen display of counted vehicles - DeepStream SDK - NVIDIA Developer Forums

The implementation shows number,car type,color type in a string with one color, along with one background color.