Ar-Ray

Please tell me OpenCV-version. For OpenCV4, the submodule darknet is not available, so please consider the following repository. [darknet-fp16 (using AlexeyAB/darknet)](https://github.com/Ar-Ray-code/darknet_ros_fp16)

This problem is similar to #328 .

What version of Opencv and CUDA are you using... :eyes: ? If you are using OpenCV4, Please use OpenCV3 or use my [darknet_ros_fp16](https://github.com/Ar-Ray-code/darknet_ros_fp16). As [my commentary page](https://qiita.com/Ar-Ray/items/93baac6cc716dc1862fe) shows, replacing it...

I'm curious about the message in `LookupError: Could not find the resource 'v4l2_camera' of type 'packages'`. Did you try `$ sudo apt install ros-foxy-v4l2-camera` ? ZED2 Stereo camera is not...

If it is resolved, please close this issue. @tomlankhorst

Please try to delete `-gencode arch=compute_30,code=sm_30` on [CMakeLists.txt](https://github.com/leggedrobotics/darknet_ros/blob/master/darknet_ros/CMakeLists.txt#L26). It's already been removed in [my fork (ROS-Foxy)](https://github.com/Ar-Ray-code/darknet_ros_fp16).

By supporting cuDNN (FP16), I have succeeded in increasing the speed by 1.3 times. Please see the following report. Also, CPU-only inference is not supported at this stage. [This repository](https://github.com/Ar-Ray-code/darknet_ros_fp16)...

Changed CMakeLists.txt to work correctly on CPU. OpenMP is used. https://github.com/leggedrobotics/darknet_ros/pull/319/commits/706dce051f4dacc345dd3ebf1166df34d35e05c6

> Did you devel on top of the master or the foxy branch, @Ar-Ray-code? Could you rebase such that only your changes are included? I develop this on the master...

Did the build for the GPU work? If you have any questions, please let me know :)