Hi,
I tried building your navigation and camera repository as instructed in documentation but gives this error
System specs: Jetson Xavier and ROS Melodic
make[2]: *** No rule to make target '/home/myusername/dreanvu/PAL/installations/../lib/libPAL_Track.so', needed by '/home/myusername/catkin_ws/devel/lib/dreamvu_pal_camera/detectall'. Stop. CMakeFiles/Makefile2:1701: recipe for target 'dreamvu_pal_camera/CMakeFiles/detectall.dir/all' failed

i have a PAL download & run.
running is Error not working

down is Error Message...

============================================================

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
pal : Depends: openvino-2022.1.0 but it is not installable
E: Unable to correct problems, you have held broken packages.

My tested ...

old version installing openvino Setup - not woking
new lasted version openvino Setup - not woking
pip install - not working
apt install - not working
git clone install - not working
Repository change & delete - not working
Clear Ubuntu 18.04 & 20.04 setup is PAL setup - not working
library Setup - not working
dkms package install - not Working

Package broken Solusion pls... I want you Setup PAL Camera

I have a question.
On the DreamVu homepage, it says that only ROS melodic is supported for PAL USB products, but referring to this github page, it seems that ROS2 humble and foxy are also supported. Is ROS2 humble or foxy supported for PAL USB products?

Hi, I was able to install correctly your library on my Jetson Orin AGX running Jetpack 5.0.2. However, when trying to compile the code there is an error at the linking part:

-- Configuring done
-- Generating done
-- Build files have been written to: /home/gaus/Documents/maitrise/Antennerie-acoustique3D/Antennerie-acoustique3D
[ 83%] Built target lib_antenneAcoustique3D
[ 91%] Linking CXX executable bin/main
/usr/bin/ld: /usr/local/lib/libPAL_Track.so: undefined reference to `sample::gLogger'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/main.dir/build.make:152: bin/main] Error 1
make[1]: *** [CMakeFiles/Makefile2:78: CMakeFiles/main.dir/all] Error 2
make: *** [Makefile:130: all] Error 2
[Finished in 0.75s with exit code 2]

Could you help me fix this please?

Here is the CMake file :
CMakeLists.txt

Thank you!

PS. I tried to install your library on my second Jetson and it did like before (see #29 ), there might still be a problem with your servers.

Loic B.

Ubuntu - 18.04
Cuda - 10.2
tensorrt - 7.0.0

Followed method 1 for installing the package

After running chmod +x pal && ./pal and while installing miscellaneous-pal

We got

Exception:
Traceback (most recent call last):
File "/home/om/DreamVu/dreamvu_ws/lib/python3.6/site-packages/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/home/om/DreamVu/dreamvu_ws/lib/python3.6/site-packages/pip/commands/install.py", line 290, in run
with self._build_session(options) as session:
File "/home/om/DreamVu/dreamvu_ws/lib/python3.6/site-packages/pip/basecommand.py", line 69, in _build_session
if options.cache_dir else None
File "/usr/lib/python3.6/posixpath.py", line 80, in join
a = os.fspath(a)
TypeError: expected str, bytes or os.PathLike object, not int

Hi @piyush-312, Documentation is missing from the 18.04 GPU branch of the SDK.

Hi,
this is an issue I have encountered in the last few versions. When I use RangeScan mode, the image will crack after a while. Usually in a static scene, wait for dozens of seconds and it will appear, more or less. In the two images below you can see the weird green black stripes.


This seems to be related to the stabilization algorithm. When I turn off Image Stabilization or Depth Stabilization, these stripes disappear.

Hi,
I want to use the camera in my human-following project.
In my project, I have to use the camera info like intrinsic matrix or distortion model such like that because I use image_proc package in the project.
In the stereo_node.cpp, there is no publishment of camera info.
Could you change the source code to get camera info or how could i do this by myself?
It could be solved this issue when I get the camera info yaml file.

Hi,
I have been trying to change the PAL resolution by changing the using the SetCameraProperties() function like this:

PAL::CameraProperties prop;
prop.resolution.height = 350;
prop.resolution.width = 760;
unsigned long int flags = PAL::ALL;
PAL::SetCameraProperties(&prop, &flags);

Yet the video stays with the same default quality of 224 and 672...

I think it is not working properly.

Let me know if I was doing something wrong.

Loic

Hi,

I'm back with an error generated by your PAL::init function. When I test on your code samples (compiling with .sh script) it works well; I can run your script 002_depth_panorama.cpp. However, when it is time to compile my program, with my CMakeLists, it compiles correctly but then crashes at PAL::Init(std::vector(5)) with this error: main: ./GET_URL.cpp:81: bool Init(): Assertion 'm_pModule != NULL' failed.. I have joined my CMakeLists.
CMakeLists.txt

Thanks alot for your help!

Loic B.

Currently only the Ubuntu-18.04 branch has a PAL_PYTHON.cpython library.

https://github.com/DreamVu/PAL-USB/tree/Ubuntu-18.04/lib

The same library is needed for the other distributions

https://github.com/DreamVu/PAL-USB/tree/Ubuntu-16.04/lib
https://github.com/DreamVu/PAL-USB/tree/Ubuntu-18.04-GPU/lib
https://github.com/DreamVu/PAL-USB/tree/Ubuntu-20.04/lib

Note that the default python is

• for Ubuntu 16.04 is python3.5,
• for Ubuntu 18.04 is python3.6,
• for Ubuntu 20.04 is python3.8,
• and Ubuntu 22.04 python3.10

This is important because the python-version is the VERSION needed in PAL_PYTHON.cpython-VERSION-ARCHITECTURE.so

I followed the instructions for installation, tried Using Debian packages and Using PPA Repository. I keep getting the next error:

gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
dpkg: error processing package engines-pal (--configure):
installed engines-pal package post-installation script subprocess retur
ned error exit status 2
No apport report written because MaxReports is reached already
dpkg: depe
ndency problems prevent configuration of pal:
pal depends on engines-pal (>= 5.2); however:
Package engines-pal is not configured yet.
pal depends on lut-pal (>= 5.4); however:
Package lut-pal is not configured yet.
pal depends on opencv-dvu; however:
Package opencv-dvu is not configured yet.
pal depends on miscellaneous-pal (>= 5.4); however:
Package miscellaneous-pal is not configured yet.

dpkg: error processing package pal (--configure):
dependency problems - leaving unconfigured
No apport report written because MaxReports is reached already
Errors wer
e encountered while processing:
opencv-dvu
lut-pal
miscellaneous-pal
engines-pal
pal
E: Sub-process /usr/bin/dpkg returned an error code (1)

Would appreciate some help.
Thanks

Hello!

I have a question about your camera data!

Actually I need 360 FOV data, for my project. And I think i will buy PAL-USB model.
Before I buy it, I would like to check if it works well with an example data file. Is it possible to get such an example data file or is there an official PAL-USB camera dataset?

Hi guys,
I have problem with my PAL-USB when trying to use any of provided *.so libs.
When I'm running Explorer there are some windows about mounting camera and after them app crashes with

Explorer: ./GET_URL.cpp:81: bool Init(): Assertion `m_pModule != NULL' failed.
Aborted (core dumped)

And it's not only about Explorer. When I'm running any of python examples, them fails on the following line with the same error:

res_init = PAL_PYTHON.InitP(camera_index)

I can't find any information about GET_URL.cpp file and can't understand what does m_pModule != NULL mean, so please help me to fix an issue.
You can find my Dockerfile at https://github.com/atokagzx/pal_camera , there is PAL-SDK installation provided via apt without TensorRT. But with TensorRT nv-tensorrt-repo-ubuntu1804-cuda10.2-trt7.0.0.11-ga-20191216_1-1_amd64.deb and including *.so files it doesn't work too.

I'm using a core i5 computer with no GPU + Ubuntu 18.04.
I followed the instructions and ran the following commands:

~/DreamVu/PAL/Explorer/x86_64/Explorer

Then I got the following error:

DreamVu/PAL/Explorer/x86_64/Explorer: error while loading shared libraries: libopenvino.so: cannot open shared object file: No such file or directory

Hi,
This is a known issue, please refer to the post on the NVIDIA forums.
https://forums.developer.nvidia.com/t/jetson-clocks-only-works-when-started-60-seconds-after-boot-why/148207

Hi,

I'm trying to re-install pal library and it doesnt work since it tries to install a deprecated version of of openvino : 2023.1.0.

I've tried to remove all the packages with the following commands:

sudo apt update
sudo dpkg --remove --force-all pal && sudo apt autoremove
sudo apt install pal

but it still doesnt work.

Thanks

Loic

Hi,

I have been trying to install your library to be able to use your camera on my Jetson Orin agx devkit. However, I am not able to install correctly all the packages. In fact, those 5 packages cant seem to work : Errors were encountered while processing:
opencv-dvu
lut-pal
miscellaneous-pal
engines-pal
pal

I have joined the complete log for this command:
install_pal.log

Could you help me figure out how to setup those libraries correctly ? Thanks

Loic B.

Hi,
I tried the jetpack version on jetson Xavier but didn't get the scan topic for laser scan. So do I need to download any other package like the one mentioned in the main branch that has mentioned downloading the pal-navigation package?

Hi,
When I installed the new SDK, I ran into a noticeable performance issue. This issue was also mentioned in my email to Rajat. He asked me to share the SavedPalProperties.txt file to check. So I attach the file here.
SavedPalProperties.txt
But I don't think it's a setting issue. I barely changed any settings. Rajat told me that the default settings is expected to hit 20 FPS, so I did another clean install. I still only get 4-6 FPS, this file should be the default setting. I've noticed that the main problem is CPU usage, not model inference. So the problem could be with image preprocessing, postprocessing, or the Explorer itself?

Since I installed using Method 2, many dependencies are determined. The most likely differences are the system environment, and the installed Python packages. I tested using the Jetson Xavier NX Developer Kit, with JetPack 4.6.0 installed. Some packages installed in Python virtual environment do not have a version specified. I recorded their installed versions for comparison.

Successfully installed pip-21.3.1 setuptools-59.6.0
Successfully installed cachetools-4.2.4 certifi-2022.9.24 charset-normalizer-2.0.12 google-api-core-2.8.2 google-api-python-client-2.52.0 google-auth-2.13.0 google-auth-httplib2-0.1.0 google-auth-oauthlib-0.7.0 googleapis-common-protos-1.56.3 httplib2-0.20.4 idna-3.4 oauthlib-3.2.2 protobuf-3.19.6 pyasn1-0.4.8 pyasn1-modules-0.2.8 pyparsing-3.0.9 requests-2.27.1 requests-oauthlib-1.3.1 rsa-4.9 six-1.16.0 uritemplate-4.1.1 urllib3-1.26.12
Successfully installed absl-py-1.3.0 grpcio-1.48.2
Successfully installed Cython-0.29.32
Successfully installed numpy-1.19.3
Successfully installed imageio-2.15.0 opencv-python-4.6.0.66 pillow-8.4.0 pyyaml-6.0
Successfully installed pyparsing-3.0.8
Successfully installed catkin-pkg-0.5.2 docutils-0.18.1 python-dateutil-2.8.2
Successfully installed empy-3.3.4