How to install the package

[amiltonwong]

Hi, @ankurhanda ,

I issue the command: "luarocks make gvnn-scm-1.rockspec" , but nothing has happened.

Is the package ready to be installed?

THX~

[ankurhanda]

seems to work on my machine. What does it do on yours? Can you elaborate? BTW, I'm still uploading the coding slowly...

[amiltonwong]

Hi, @ankurhanda ,

The following is the output after command "luarocks make gvnn-scm-1.rockspec"

root@milton-OptiPlex-9010:~/gvnn# luarocks make gvnn-scm-1.rockspec

Error: File not found: gvnn-scm-1.rockspec

And I search through the package "gvnn", no file named "gvnn-scm-1.rockspec" was found.

Is the rockspec file compulsory?

(PS. The torch package was installed successfully before as guided from http://torch.ch/docs/getting-started.html)

[ankurhanda]

pushed now

[amiltonwong]

Hi, @ankurhanda ,

Thanks!, the updated repository can be installed without error.

Now , I try some command such as require 'gvnn', but came across the following error:

th> require 'gvnn'
/root/torch/install/share/lua/5.1/trepl/init.lua:384: cannot open /root/torch/install/share/lua/5.1/gvnn/TransformationRotationSO3.lua: No such file or directory
stack traceback:
    [C]: in function 'error'
    /root/torch/install/share/lua/5.1/trepl/init.lua:384: in function 'require'
    [string "_RESULT={require 'gvnn'}"]:1: in main chunk
    [C]: in function 'xpcall'
    /root/torch/install/share/lua/5.1/trepl/init.lua:651: in function 'repl'
    /root/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:199: in main chunk
    [C]: at 0x00406670  
                                                                      [2.9741s]
th> 

And I search through the package "gvnn", no file named "TransformationRotationSO3.lua" was found. It seems that file is missing~

[ankurhanda]

added! Try reinstalling it. Sorry, I'm still in the process of adding files and putting together the whole library.

[amiltonwong]

th> require 'gvnn'
/root/torch/install/share/lua/5.1/trepl/init.lua:384: cannot open /root/torch/install/share/lua/5.1/gvnn/TransformationMatrix3x4GeneratorQuat.lua: No such file or directory
stack traceback:
    [C]: in function 'error'
    /root/torch/install/share/lua/5.1/trepl/init.lua:384: in function 'require'
    [string "_RESULT={require 'gvnn'}"]:1: in main chunk
    [C]: in function 'xpcall'
    /root/torch/install/share/lua/5.1/trepl/init.lua:651: in function 'repl'
    /root/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:199: in main chunk
    [C]: at 0x00406670  
                                                                      [1.3466s]
th>

The file "TransformationMatrix3x4GeneratorQuat.lua" is missing.

Maybe I'll wait some time for you to upload the entire library. Keep calm and carry on ~

[ankurhanda]

I've deleted that from the init.lua so you should be able to now reinstall and let me know if any of the other files are missing. do git pull and luarocks make gvnn-scm-1.rockspec

[amiltonwong]

Here is the new error:

th> require 'gvnn'
/root/torch/install/share/lua/5.1/trepl/init.lua:384: /root/torch/install/share/lua/5.1/trepl/init.lua:384: /root/torch/install/share/lua/5.1/luarocks/loader.lua:117: error loading module 'libgvnn' from file '/root/torch/install/lib/lua/5.1/libgvnn.so':
    /root/torch/install/lib/lua/5.1/libgvnn.so: undefined symbol: luaopen_libgvnn
stack traceback:
    [C]: in function 'error'
    /root/torch/install/share/lua/5.1/trepl/init.lua:384: in function 'require'
    [string "_RESULT={require 'gvnn'}"]:1: in main chunk
    [C]: in function 'xpcall'
    /root/torch/install/share/lua/5.1/trepl/init.lua:651: in function 'repl'
    /root/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:199: in main chunk
    [C]: at 0x00406670  
                                                                      [1.4744s]
th> 

[ankurhanda]

git pull and reinstall -- it should work now.

[amiltonwong]

It works now. Thanks @ankurhanda

[amiltonwong]

Hi, @ankurhanda ,

I git clone the updated version and start to install it.

It seems the file "Huber.cu" is missing ...

root@milton-OptiPlex-9010:~/new-gvnn/gvnn# luarocks make gvnn-scm-1.rockspec
cmake -E make_directory build && cd build && cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="/root/torch/install/bin/.." -DCMAKE_INSTALL_PREFIX="/root/torch/install/lib/luarocks/rocks/gvnn/scm-1" && make

-- Found Torch7 in /root/torch/install
-- Compiling with OpenMP support
-- Configuring done
-- Generating done
-- Build files have been written to: /root/new-gvnn/gvnn/build
[ 25%] Building NVCC (Device) object CMakeFiles/cugvnn.dir/cugvnn_generated_init.cu.o
/root/new-gvnn/gvnn/init.cu:7:20: fatal error: Huber.cu: No such file or directory
 #include "Huber.cu"
                    ^
compilation terminated.
CMake Error at cugvnn_generated_init.cu.o.Release.cmake:207 (message):
  Error generating
  /root/new-gvnn/gvnn/build/CMakeFiles/cugvnn.dir//./cugvnn_generated_init.cu.o

make[2]: *** [CMakeFiles/cugvnn.dir/cugvnn_generated_init.cu.o] Error 1
make[1]: *** [CMakeFiles/cugvnn.dir/all] Error 2
make: *** [all] Error 2

Error: Build error: Failed building.
root@milton-OptiPlex-9010:~/new-gvnn/gvnn#

[ankurhanda]

sorry :) just comment it out from init.cu - I will add it soon. Also, curious to know what are you trying to implement with this library :)

[ankurhanda]

I just updated the repo - you should be able to pull and compile again

[amiltonwong]

Thanks @ankurhanda , it compiles smoothly now. Here, I'd like to test it for comparison with conventional geometric approach. One more question, would it be possible to integrate with conventional SfM/SLAM framework? I'm concerned about the bridging interface between lua output with existing C++ / python / matlab framework.

[ankurhanda]

Not sure if it can beat pure geometric approach but it can help the standard SLAM/sfM approach to be a lot more robust e.g. able to match features across images taken at different times of the day which isn't possible with standard sfm/SLAM