Different semantic results of suma++ about semantic_suma

[Chen-Xieyuanli]

Hey,

Thanks for using our code.

It looks like a problem of the semantic segmentation part, and the SLAM part works. You could visualize the semantic segmentation results by checking the box of "Show semantic map"

Several reasons may cause this problem.

1. Our rangenet_lib and the provided pretrained model can now only work well with KITTI LiDAR data. It may provide wrong predictions when you test with other LiDAR data.
2. The runtime tensorrt model will be generated depending on your hardware. It may not work with other versions of the graphic cards or drivers. Could you please provide more information about your hardware setups. We may also have a test later.

[TT22TY]

Hi,
Thanks for your reply!
Yes, it seems that it is a problem of the semantic segmentation part. As I check the box of "Show semantic map", it looks like this, in which the semantic map looks black with only a bit of color labels.
I check the project on my machine with regard to your suggestions:

1. I do use the KITTI LiDAR data for testing, specifically, I use both the KITTI odometry velodyne laser data (The semantic kitti data set your lab provide) and road data (2011_10_03_drive_0047_sync) as you mentioned in your SuMa++ paper, both of them did not work correctly.

2. My hardware set up and the result after running ./visualizer are as follows:

I use GeForce RTX 2080,Cuda 10.0, V10.0.130, Cudnn 7.5.0, Driver Version: 410.48.

3. Besides, when I build the project "point labeler"(https://github.com/PRBonn/point_labeler) and "SuMa ++" , gtest related problems occurred,
   after I remove gtest with "apt-get purge libgtest-dev " , the point labeler works fine.

However , I am not sure whether it will affect the semantic map, since when I build suma++. it will give the prompt message: "gtest not found, C++ tests can not be built. Please install the gtest headers globally in your system to enable gtest", but the suma++ project can be built successfully with warnings.

Looking forward to your reply. :) Thanks!

[Chen-Xieyuanli]

The problem should come from the rangenet_lib, since the semantic segmentation input of SuMa++ is not correct.

Have you already tried the example demo of rangenet_lib? The semantic segmentation result visualized in the "Show semantic map" should be the same as that of rangenet_lib.

You may test and make sure the rangnet_lib works first. If the example demo of rangenet_lib works well, SuMa++ should also work, and vice versa.

[TT22TY]

Thanks for your reply!

Yes, I have tested rangenet_lib, the result is as follows, which is also different to the demo on the website(https://github.com/PRBonn/rangenet_lib). I use the pre_trained model provided on the website, I wonder why it is different and wrong. Could you please give some suggestions to find out the reason?

Thank you very much.

[Chen-Xieyuanli]

Hi @TT22TY,
Since the problem comes from rangenet_lib and you also opened a new issue there, I'm going to close this one.

[Chen-Xieyuanli]

Hi @TT22TY

The problem seems caused by the incompatibility of our code with TensorRT version 6.

For more details please find here: PRBonn/rangenet_lib#9.

[TT22TY]

Thank you very much! @Chen-Xieyuanli

In fact ,I use TensorRT 5.1.5.0, so I wonder which version do you installed?
Besides, since the version of TensorRT is related to cuda and cudnn, could you please tell me the exact version of the cuda and cudnn you use? Mine is Cuda 10.0, V10.0.130, Cudnn 7.5.0, Driver Version: 410.48. TensorRT 5.1.5.0.

Thank you!

[Chen-Xieyuanli]

Hi @TT22TY ,

I've listed the tested setups in PRBonn/rangenet_lib#9.

To keep this issue in one track, I am going to close this one again.