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dusty-nv / ros_deep_learning

Deep learning inference nodes for ROS / ROS2 with support for NVIDIA Jetson and TensorRT
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Anyway to view detectnet outputs?? #40

Open aditjha opened 4 years ago

aditjha commented 4 years ago

Hello, This repo is amazing, thank you so much. Is there any way to view the resulting output detections from the detectnet ros node with the bounding boxes and label, I would really appreciate any help.

k3street commented 3 years ago

You can subscribe to the node generated see: ros2 topic echo /detectnet/detections

dusty-nv commented 3 years ago

I also recently added the /detectnet/overlay topic. When subscribed to, it will output the overlay image that has the rendered bounding boxes and labels.

https://github.com/dusty-nv/ros_deep_learning#detectnet-node-1

k3street commented 3 years ago

I think your detections array is now null in the node topic detections. publisher

dusty-nv commented 3 years ago

It is only sent when there are actually detections detected in the image

k3street commented 3 years ago

Hey Dusty, take a look at this. https://youtu.be/VVjh_FYc2Us Also when i took your update the package is now freezing when it wasn't before. I haven't done any triage yet but I will let you know what I find. Also the youtube link I provided doesn't have any sound. https://youtu.be/VVjh_FYc2Us

dusty-nv commented 3 years ago

Hmm ok - what version of ROS are you using? If it's ROS Melodic, you might want to revert to the ros1 branch of this repo.

Here is where the detection array is populated: https://github.com/dusty-nv/ros_deep_learning/blob/ac40e93413f4b7cb911a18c0e4d5daac479234d4/src/node_detectnet.cpp#L144

You might want to try adding some additional logging to debug. But it seems like since you are already getting those detection logging messages each frame, that this array is being filled on the publisher side.

Does it freeze/hiccup even when your screen capture tool isn't running?

k3street commented 3 years ago

It freezes without the screen capture tool running. I am using ROS2 Eloquent

k3street commented 3 years ago

I should clarify that this behavior began when I took the latest ros2 update today. There might be something going on there but I don’t have the time to figure it out today. If I come up with a cause I will update the forum.