Getting bounding box data and frame saved from deepstream yolov3, with timestamp

Accelerated Computing Intelligent Video Analytics DeepStream SDK
1

Hi

Can anyone please help…I have custom yolov3 running on Xavier/Deepstream and now need to save the bounding box data to a .txt file, and preferably with the timestamp of when the frame was taken. Can anyone explain (in a very simple manner, if possible) how to do this - or any part of it so I can get started?

Also is there also a way to save each frame as *.jpg that the usb camera is sending to yolo?

Thanks

2

For save bbox data, you can refer deepstream-app.c → static void
write_kitti_output (AppCtx * appCtx, NvDsBatchMeta * batch_meta)

For save jpg, Can you refer https://devtalk.nvidia.com/default/topic/1061492/deepstream-sdk/deepstream-sdk-faq/
→ 2. How to get original NV12 frame buffer

1 Like
3

Thanks I’ve got it saving the data to .txt using your help, though the confidence (assuming a float) is always 0.0. Any ideas why?

4

Refer https://devtalk.nvidia.com/default/topic/1058661/deepstream-sdk/nvinfer-is-not-populating-confidence-field-in-nvdsobjectmeta-ds-4-0-/post/5373156/#5373156