我看readme里写的不是很详细，求教

Hi, I would like to use the work in the repository but when I compile I get
/usr/bin/ld: CMakeFiles/gcn_ftr.dir/src/main.cc.o: in function main': /home/michele/semantic_feature_points/src/main.cc:22: undefined reference to cv::imread(std::string const&, int)'
/usr/bin/ld: /home/michele/semantic_feature_points/src/main.cc:70: undefined reference to cv::imshow(std::string const&, cv::_InputArray const&)' /usr/bin/ld: CMakeFiles/gcn_ftr.dir/src/GCNextractor.cc.o: in function Mat':
/usr/local/include/opencv4/opencv2/core/mat.inl.hpp:591: undefined reference to cv::error(int, std::string const&, char const*, char const*, int)' /usr/bin/ld: /usr/local/include/opencv4/opencv2/core/mat.inl.hpp:577: undefined reference to cv::error(int, std::string const&, char const*, char const*, int)'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [CMakeFiles/gcn_ftr.dir/build.make:129: gcn_ftr] Error 1
make[1]: *** [CMakeFiles/Makefile2:73: CMakeFiles/gcn_ftr.dir/all] Error 2
make: *** [Makefile:84: all] Error 2

Do you know why? (I'm using Opencv 4,Python 3.8 , Ubuntu 20.04, pytorch 1.12

Hi! and thank you for making this code available. i am building on Windows, with libtorch 2.0.0 / cuda 11.7.

The code compiles after I edit a few places, but i see a crash when loading the model you provide:

   model = make_shared<SuperPoint>();
    torch::load(model, str_model);  //crash here

The edits I made are:

auto fkpts = torch::from_blob(kpt_mat.data, {l**ong long**(keypoints.size()), 2}, torch::kFloat); //to get round a narrowing conversion error

and:

auto desc = torch::grid_sampler(mDesc, grid, 0, 0, **false**); // [1, 256, 1, n_keypoints] //to get rid of a 'invalid args' error

None of these should effect the model load though! What might be happening here?

EDIT: i see teh same crash when loading teh gcn2 model. On this line:

module = std::make_shared<torch::jit::script::Module>(torch::jit::load(net_fn));

Both of these have been tested with hardcoded and double checked model paths.

Thank you!