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kandi X-RAY | OpenNI Summary
Website: Forum: Wiki: Binaries are available at: (The "OpenNI Binaries" section). Sources are available at: or for unstable branch.
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QUESTION
I am trying to get orb_slam2_ros to compile and it needed an OpenCV version higher than 2.3. I have 4.2.0 but it doesn't work but according to ROS, it has been tested to work on 2.4.11. Here is what I did:
- Download the source zip file.
- Extract it.
- Go into the directory and create a build folder.
- Go into the build folder and run
cmake ... There is gives me this:
ANSWER
Answered 2021-Feb-09 at 04:58You need to change opencv2.4.13/cmake/OpenCVDetectCXXCompiler.cmake (not sure which line) dumpversion to dumpfullversion
Explanation is that
In gcc with higher version, dumpversion function can't get true full version number of compiler so that cmake progress will fail
Recommendation: On github, there plenty of refactored versions for both 4.2.0 and others. I recommend to upgrade to newer OpenCV versions for orb_slam_ros. Cmake lists and source files should be changed respectively.
QUESTION
I know this sounds stupid and I'm propably very late to the party but here's the thing I want to program an gesture recogniction application (in the likes of this Hand detection or this actual finger detection) for the Xbox 360 Kinect. SDK (version 1.8) is found, installed and works, preliminary research is done - I only forgot to look in which language to write the code. The link from the SDK to the documentation would be the first thing to do but is a dead end, unfortunately.
From the provided examples it seems either to be C++ or C# although some old posts also claim Java. My question is: Is there a documentation not tied to the SDK and which pitfall are there in regard to developing in this specific case under C++/C#/Java? A post from 2011 barely covers the beginning.
Addendum: On further looking I was prompted for the Samples site from the developer toolkit - which can be reached, yet all listed and linked examples are dead ends too.
Addendum: For reference I userd this instruction - ultimately proving futile.
Found an version of NiTE here
...ANSWER
Answered 2021-Jan-19 at 22:29I've provided this answer in the past.
Personally I've used the Xbox360 sensor with OpenNI the most (because it's cross platform). Also the NITE middleware on alongside OpenNI provides some basic hand detection and even gesture detection (swipes, circle gesture, "button" push, etc.).
While OpenNI is opensource, NITE isn't so you'd be limited to what they provide.
The links you've shared use OpenCV. You can install OpenNI and compile OpenCV from source with OpenNI support. Alternatively, you can manually wrap the OpenNI frame data into an OpenCV cv::Mat and carry on with the OpenCV operations from there.
Here's a basic example that uses OpenNI to get the depth data and passes that to OpenCV:
QUESTION
I have been trying to install opencv from source rather than pip since I could not read a VideoCapture successfully.
Installing opencv-3.2.0 on Ubuntu 16.04.3 LTS. Followed the details mentioned here.
I get the following errors in ".../opencv-3.2.0/build/CMakeFiles/CMakeError.log":
...ANSWER
Answered 2017-Aug-09 at 07:06For your problem, you have to run following command
QUESTION
When I build PCL library on Jetson TX2 from source via CMAKE, I get the following debug logs among other msgs:
...ANSWER
Answered 2020-Feb-03 at 06:11I found a file which was causing the CMAKE to include 10 sm_arch in compatibility list. Here's the link. I will re-compile after editing the file for just 1 sm_arch and compare the size of binaries generated. – Anuj Patil Jan 22 at 18:10
So findCUDA was the culprit here. Editing the files to required sm_arch does the trick!
QUESTION
I'm trying to compile the new version of OpenCV 3.3 (released on Aug 3, 2017) but I'm getting an error of C++11
This is my cmake command line:
ANSWER
Answered 2017-Aug-07 at 02:20The problem here is not that you are trying to use C++11 but exactly the opposit, the source code depends on it (judging by the error given for auto res = test(); which is a C++11 feature).
For GCC 5.4 the default C++ standard is C++98 with GNU extensions, as stated in the documentation, although you can explicitly set the C++11 standard (which is almost fully supported in GCC 5.4) using the -std=c++11 flag. This would probably solve the issue however updating to GCC 7.1 (as Mark Setchell advised) is much better idea and solves the issue out of the box (the default standard in 7.1 is C++14 with GNU extensions).
As for how to pass the flag: you only need to add set(CMAKE_CXX_FLAGS "-std=c++11") to the beginning of the CMakeLists.txt or add a string entry in CMake GUI where the name is CMAKE_CXX_FLAGS and the value is -std=c++11.
QUESTION
I am currently working with an Orbbec Astra Mini depth sensor. I downloaded and installed the Astra Driver and OpenNI2 package. The depth sensor is shown in the device manager on my Windows 10 as soon as I attach it to the USB port. So far everything is fine.
My goal is to read RGB images and the depth map with OpenCV and show them with imshow.
The following code compiles fine in Visual Studio 2015, but I get this error:
...ANSWER
Answered 2018-Feb-20 at 15:04I wrote an comprehensive guide how to to compile ORB SLAM 2 (which was my preliminary goal) with OpenCV including OpenNI2 in order to use my Orbbec Astra camera as depth sensor. Hopefully someone else stumbling over this thread can use it.
QUESTION
I've created an Unity project, and want to use the OpenNI wrapper from here https://github.com/falahati/NiWrapper.Net. After adding the NuGet package in JetBrains Rider it appears and is installed correctly (is usable) but after a minute or two -the package disappears and Rider warns me that it can't resolve symbols from the wrapper and the namespace OpenNIWrapper could not be found... But what's strange it still appears in "Packages" of the project.
I'm using the newest MacOS Mojave, already tried on VS for Mac, MonoDevelop and in Rider... I've tried removing the project and creating it from scratch, tried to change API Compatibility Level in Unity - both 4.0 and 2.0 don't work.
I noticed that it does some kind of auto-synchronization or build and deletes the package from .csproj file.
Basically I've run out of ideas and couldn't find any solutions anywhere... I'll appreciate any help, thanks :)
...ANSWER
Answered 2019-Oct-05 at 21:45Unity do not support nuget. In your case IDE added references for nuget packages to csproj but Unity re-create csproj files after each scripts re-import and remove all other data (which IDE added before).
To use third-party package you can chose any of those ways:
- Just clone/copy repository with third-party plugin to project manually.
- Use git submodules. Like first way but easier to manage. To more info you can see https://git-scm.com/docs/git-submodule
- Build Third-party plugin to DLL and add it to project.
- Use Unity Package Manager. In this case you need manually add dependency to
Packages/manifest.json. To learn more you can read https://docs.unity3d.com/Manual/upm-manifestPrj.html
QUESTION
I'm using Ubuntu 18.04, however this questions should be pretty much the same for any reasonably recent Linux distribution.
Based on this post:
How to install Point Cloud Library v1.8 on Ubuntu 16
I'm attempting to build Point Cloud Library from source as follows:
Install various packages:
...ANSWER
Answered 2019-Sep-21 at 13:30In your cmake command, please add -DBUILD_examples=ON as an option to enable examples.
QUESTION
I'm trying to install opencv 4.1 to use in python WITH Cuda support. I tried following this guide and had preinstalled CUDA 10 (because I needed it with keras and this works already), but when checking opencv in python using following code
...ANSWER
Answered 2019-Sep-22 at 17:09The problem was after I compiled opencv with the flags I wanted, I forgot to run sudo make install to effectively install all the bindings etc.
By default python finds the cv2 module, but not everything is configured.
QUESTION
This question might be slightly off-topic here as it could be interpreted as "looking for software resources" albeit I would like it to be understood as "request for best practice" and couldn't find any other Stack-Exchange Site where this would be more appropriate so:
I happened to get my hands on a MS Kinect depth camera this week. All tutorials and resources I find are either massively outdated (MS) or overly complicated. My question is:
What is the easiest way to get a depth image out of a Kinect and ready to be processed in 2019 - Ideally using OpenCV with Python?
I tried:
Windows 10 + libusbK + freenect + anaconda + openCV
There's a lot of manual compilation involved, manually changing lines of codes in several files etc.
Ubuntu 12.4.(sic!) + kernel drivers + openNI + anaconda + openCV
A little better, but still feels hacky with manually pulling in patches and hotfixes for kernel-driver disable, cross-compilation with cmake/cython etc. (not working reliably with venvs...)
...ANSWER
Answered 2019-Aug-08 at 15:59I finally found a way after quite some time of testing, using a Raspberry Pi 3 and the latest Raspbian Buster image. Be sure, that a running python version is on your system. I tried everything here using python 2.7.
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