greenlet

``` uint32_t cpt = 0; for (const auto & feat : allFeatures) { map_node_to_index.emplace_back(feat, cpt); ++cpt; } // Sort the flat_pair_map map_node_to_index.sort(); // Clean some memory allFeatures.clear();``` Shouldn't you use...

For now there is no bug, but some manipulations tell us that it is coincidence, that there's no bug 1. There is a container for Feature-to-Index matching: `flat_pair_map map_node_to_index;` wich...

I feel like it is not clear what I wanted to explain In my last comment potential problem can be seen from steps 4 and 5. `Index` and `k` values...

I measured performance like in the code for the `sceaux_global_reconstruction` set: 1. `develop` baseline gives 3.5 sec 2. `issue-1737-experimental` with `std::map image_feature_index` instead of `std::set allFeatures` plus `flat_pair_map map_node_to_index` gives...

> I made some benchmark on my machine and I found actually that your version is a bit slower. > > Here the results on various datasets. > > Dataset...

I had same issue for the headless build. My cmake command: ``` cmake -DENABLE_HEADLESS_RENDERING=ON -DBUILD_GUI=OFF -DUSE_SYSTEM_GLEW=OFF -DUSE_SYSTEM_GLFW=OFF -DPYTHON_EXECUTABLE=$(which python) -DUSE_SYSTEM_ASSIMP=ON .. ``` I fixed it by changing file `3rdparty/mkl/tbb.cmake` (added...