undefined symbol: _ZN12libfreenect25FrameC1EmmmPh about freenect2.net

[thomiel]

I found an old version of the libfreenect2.so in the base folder that caused the undefined symbol (expected ~/freenect2/lib to be used instead). I just copied the newer libfreenect2.so along with libfreenect2.so.0.2 and libfreenect2.so.0.2.0 into the base folder for now.

Here is a list of tasks I needed to do before I was able to build the solution:

1. Changed the target framework of the Freenect2 subproject from 3.5 to 4.5.
2. I also needed to expose the include path to make the libfreenect2c.so in the native folder:
   export CPLUS_INCLUDE_PATH=/freenect2/include
   (or CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:/freenect2/include if you are already using this environment variable)
3. Add the
   export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:~/freenect2/lib
4. finally, after adding the library path in 3., start the solution from the same bash, so C# can find the library via $LD_LIBRARY_PATH (here using MonoDevelop as development environment):
   monodevelop Freenect2.sln
5. Press F5

Good job, madadam, building that wrapper. Maybe you want to add these as build steps to your README.md...

[madadam]

Hi there,

Sorry for not responding earlier, but I'm currently busy with other projects. I'll get back to this as soon as I can!

[OptiExperts]

Hello there @madadam
SORRY for that Question but Im newby with kinect and C# how to build this program ? To use in C#

I have tried to build your code it is not working.
here is the error thats what I got after building

Error 1 Metadata file 'C:\Users\MOeez Raja\Desktop\freenect2.net-master\freenect2.net-master\bin\Debug\Freenect2DotNet.dll' could not be found C:\Users\MOeez Raja\Desktop\freenect2.net-master\freenect2.net-master\Example\CSC Example

any help , I'll be very grateful to you.

[thomiel]

Hi Raja!

Maybe you will find the instructions on my fork more comprehensive:

https://github.com/thomiel/freenect2.net

[OptiExperts]

@thomiel so nice of you.

[madadam]

Hey @RajaMOeez , if you are on windows, you might potentially be better off using the official Microsoft SDK for Kinect. I wrote this library for linux and never bothered porting it to windows. Or check @thomiel 's fork out, he might have added windows support.

@thomiel : sorry man it took me so long to get back to you. I can't maintain this library anymore. If you are interested, would you mind taking over the reins? I can put a notice in the README that you are now the official maintainer. What do you say?

[OptiExperts]

@madadam thanks for the quick response.

[thomiel]

I didn't care about Windows support. On Windows, I also would use the Microsoft SDK.

A link in the readme would be nice. I still plan to do stuff for it, e.g. calibration.

[OptiExperts]

sorry to ask that nonsense question but Im a newby student of the first semester and I have assignment to solve a problem with kinect v2. I need to use the C# wrapper to solve a problem basically I need to detect the color from kinect v2 after applying color filter on kinect V2 image frame using Aforge.net library. I have tried it remains failed and got this
ERROR
**An unhandled exception of type 'System.DllNotFoundException' occurred in AForge.Video.Kinect.dll

Additional information: Unable to load DLL 'freenect': The specified module could not be found. (Exception from HRESULT: 0x8007007E)**

If any help and guidance I'll be very thankful

[thomiel]

Have you installed the freenect2 library? Freenect2.NET is just a wrapper for mono.

Which fork do you actually use? Mine or madadams?

[OptiExperts]

yes sir I have already install the Libfreenect2 library. The fork I have been using is https://github.com/OpenKinect/libfreenect2
thanks for the response @thomiel
Best Regards
From MOeez

[thomiel]

I meant the fork of the .NET wrapper you use.

(don't call me sir, I'm no knight or something)

[OptiExperts]

@thomiel Sorry about that. The fork that I was use is (https://github.com/thomiel/freenect2.net).

What thing do you have use for make this fork. I was trying to do MAKE it with Windows Shell. but I can't MAKE it because the commands that you have gave in this fork, to MAKE this fork is not OK with Windows Shell

[thomiel]

Sorry, Raja. As I said: "I didn't care about Windows support. On Windows, I also would use the Microsoft SDK."

As a first semester newby, your skills might not be sufficient to adapt the .NET wrapper for use with Windows OS in reasonable time. The best way -- supposed you appreciate the open source way -- would be to get the MinGW environment. A GNU version of the make utility is included there. You would have to adapt to all the OS differences, e.g. using .dll files rather than .so files.

Not as steep to climb for a noob: the Windows SDK https://www.microsoft.com/en-us/download/details.aspx?id=44561

[OptiExperts]

thanks for the your response and guidance. I'll try.