diff --git a/competing_methods/my_KPConv/.gitignore b/competing_methods/my_KPConv/.gitignore
new file mode 100644
index 00000000..b6e47617
--- /dev/null
+++ b/competing_methods/my_KPConv/.gitignore
@@ -0,0 +1,129 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+# Usually these files are written by a python script from a template
+# before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+# However, in case of collaboration, if having platform-specific dependencies or dependencies
+# having no cross-platform support, pipenv may install dependencies that don't work, or not
+# install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
diff --git a/competing_methods/my_KPConv/INSTALL.md b/competing_methods/my_KPConv/INSTALL.md
new file mode 100644
index 00000000..369fcb9c
--- /dev/null
+++ b/competing_methods/my_KPConv/INSTALL.md
@@ -0,0 +1,56 @@
+
+# Installation instructions
+
+## Ubuntu 18.04
+
+* Make sure CUDA and cuDNN are installed. One configuration has been tested:
+ - PyTorch 1.4.0, CUDA 10.1 and cuDNN 7.6
+
+* Ensure all python packages are installed :
+
+ sudo apt update
+ sudo apt install python3-dev python3-pip python3-tk
+
+* Follow PyTorch installation procedure.
+
+* Install the other dependencies with pip:
+ - numpy
+ - scikit-learn
+ - PyYAML
+ - matplotlib (for visualization)
+ - mayavi (for visualization)
+ - PyQt5 (for visualization)
+
+* Compile the C++ extension modules for python located in `cpp_wrappers`. Open a terminal in this folder, and run:
+
+ sh compile_wrappers.sh
+
+You should now be able to train Kernel-Point Convolution models
+
+## Windows 10
+
+* Make sure CUDA and cuDNN are installed. One configuration has been tested:
+ - PyTorch 1.4.0, CUDA 10.1 and cuDNN 7.5
+
+* Follow PyTorch installation procedure.
+
+* We used the PyCharm IDE to pip install all python dependencies (including PyTorch) in a venv:
+ - torch
+ - torchvision
+ - numpy
+ - scikit-learn
+ - PyYAML
+ - matplotlib (for visualization)
+ - mayavi (for visualization)
+ - PyQt5 (for visualization)
+
+* Compile the C++ extension modules for python located in `cpp_wrappers`. You just have to execute two .bat files:
+
+ cpp_wrappers/cpp_neighbors/build.bat
+
+ and
+
+ cpp_wrappers/cpp_subsampling/build.bat
+
+You should now be able to train Kernel-Point Convolution models
+
diff --git a/competing_methods/my_KPConv/LICENSE b/competing_methods/my_KPConv/LICENSE
new file mode 100644
index 00000000..f288702d
--- /dev/null
+++ b/competing_methods/my_KPConv/LICENSE
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
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+
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+state the exclusion of warranty; and each file should have at least
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+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
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+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
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+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
diff --git a/competing_methods/my_KPConv/README.md b/competing_methods/my_KPConv/README.md
new file mode 100644
index 00000000..0512c027
--- /dev/null
+++ b/competing_methods/my_KPConv/README.md
@@ -0,0 +1,58 @@
+
+
+
+Created by Hugues THOMAS
+
+## Introduction
+
+This repository contains the implementation of **Kernel Point Convolution** (KPConv) in [PyTorch](https://pytorch.org/).
+
+KPConv is also available in [Tensorflow](https://github.com/HuguesTHOMAS/KPConv) (original but older implementation).
+
+Another implementation of KPConv is available in [PyTorch-Points-3D](https://github.com/nicolas-chaulet/torch-points3d)
+
+KPConv is a point convolution operator presented in our ICCV2019 paper ([arXiv](https://arxiv.org/abs/1904.08889)). If you find our work useful in your
+research, please consider citing:
+
+```
+@article{thomas2019KPConv,
+ Author = {Thomas, Hugues and Qi, Charles R. and Deschaud, Jean-Emmanuel and Marcotegui, Beatriz and Goulette, Fran{\c{c}}ois and Guibas, Leonidas J.},
+ Title = {KPConv: Flexible and Deformable Convolution for Point Clouds},
+ Journal = {Proceedings of the IEEE International Conference on Computer Vision},
+ Year = {2019}
+}
+```
+
+## Installation
+
+This implementation has been tested on Ubuntu 18.04 and Windows 10. Details are provided in [INSTALL.md](./INSTALL.md).
+
+
+## Experiments
+
+We provide scripts for three experiments: ModelNet40, S3DIS and SemanticKitti. The instructions to run these
+experiments are in the [doc](./doc) folder.
+
+* [Object Classification](./doc/object_classification_guide.md): Instructions to train KP-CNN on an object classification
+ task (Modelnet40).
+
+* [Scene Segmentation](./doc/scene_segmentation_guide.md): Instructions to train KP-FCNN on a scene segmentation
+ task (S3DIS).
+
+* [SLAM Segmentation](./doc/slam_segmentation_guide.md): Instructions to train KP-FCNN on a slam segmentation
+ task (SemanticKitti).
+
+* [Pretrained models](./doc/pretrained_models_guide.md): We provide pretrained weights and instructions to load them.
+
+* [Visualization scripts](./doc/visualization_guide.md): For now only one visualization script has been implemented:
+the kernel deformations display.
+
+## Acknowledgment
+
+Our code uses the nanoflann library.
+
+## License
+Our code is released under MIT License (see LICENSE file for details).
+
+## Updates
+* 27/04/2020: Initial release.
diff --git a/competing_methods/my_KPConv/cpp_wrappers/compile_wrappers.sh b/competing_methods/my_KPConv/cpp_wrappers/compile_wrappers.sh
new file mode 100644
index 00000000..8ba35b0b
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/compile_wrappers.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Compile cpp subsampling
+cd cpp_subsampling
+python setup.py build_ext --inplace
+cd ..
+
+# Compile cpp neighbors
+cd cpp_neighbors
+python setup.py build_ext --inplace
+cd ..
\ No newline at end of file
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/build.bat b/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/build.bat
new file mode 100644
index 00000000..8679a29a
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/build.bat
@@ -0,0 +1,5 @@
+@echo off
+py setup.py build_ext --inplace
+
+
+pause
\ No newline at end of file
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/neighbors/neighbors.cpp b/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/neighbors/neighbors.cpp
new file mode 100644
index 00000000..bf22af8f
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/neighbors/neighbors.cpp
@@ -0,0 +1,333 @@
+
+#include "neighbors.h"
+
+
+void brute_neighbors(vector& queries, vector& supports, vector& neighbors_indices, float radius, int verbose)
+{
+
+ // Initialize variables
+ // ******************
+
+ // square radius
+ float r2 = radius * radius;
+
+ // indices
+ int i0 = 0;
+
+ // Counting vector
+ int max_count = 0;
+ vector> tmp(queries.size());
+
+ // Search neigbors indices
+ // ***********************
+
+ for (auto& p0 : queries)
+ {
+ int i = 0;
+ for (auto& p : supports)
+ {
+ if ((p0 - p).sq_norm() < r2)
+ {
+ tmp[i0].push_back(i);
+ if (tmp[i0].size() > max_count)
+ max_count = tmp[i0].size();
+ }
+ i++;
+ }
+ i0++;
+ }
+
+ // Reserve the memory
+ neighbors_indices.resize(queries.size() * max_count);
+ i0 = 0;
+ for (auto& inds : tmp)
+ {
+ for (int j = 0; j < max_count; j++)
+ {
+ if (j < inds.size())
+ neighbors_indices[i0 * max_count + j] = inds[j];
+ else
+ neighbors_indices[i0 * max_count + j] = -1;
+ }
+ i0++;
+ }
+
+ return;
+}
+
+void ordered_neighbors(vector& queries,
+ vector& supports,
+ vector& neighbors_indices,
+ float radius)
+{
+
+ // Initialize variables
+ // ******************
+
+ // square radius
+ float r2 = radius * radius;
+
+ // indices
+ int i0 = 0;
+
+ // Counting vector
+ int max_count = 0;
+ float d2;
+ vector> tmp(queries.size());
+ vector> dists(queries.size());
+
+ // Search neigbors indices
+ // ***********************
+
+ for (auto& p0 : queries)
+ {
+ int i = 0;
+ for (auto& p : supports)
+ {
+ d2 = (p0 - p).sq_norm();
+ if (d2 < r2)
+ {
+ // Find order of the new point
+ auto it = std::upper_bound(dists[i0].begin(), dists[i0].end(), d2);
+ int index = std::distance(dists[i0].begin(), it);
+
+ // Insert element
+ dists[i0].insert(it, d2);
+ tmp[i0].insert(tmp[i0].begin() + index, i);
+
+ // Update max count
+ if (tmp[i0].size() > max_count)
+ max_count = tmp[i0].size();
+ }
+ i++;
+ }
+ i0++;
+ }
+
+ // Reserve the memory
+ neighbors_indices.resize(queries.size() * max_count);
+ i0 = 0;
+ for (auto& inds : tmp)
+ {
+ for (int j = 0; j < max_count; j++)
+ {
+ if (j < inds.size())
+ neighbors_indices[i0 * max_count + j] = inds[j];
+ else
+ neighbors_indices[i0 * max_count + j] = -1;
+ }
+ i0++;
+ }
+
+ return;
+}
+
+void batch_ordered_neighbors(vector& queries,
+ vector& supports,
+ vector& q_batches,
+ vector& s_batches,
+ vector& neighbors_indices,
+ float radius)
+{
+
+ // Initialize variables
+ // ******************
+
+ // square radius
+ float r2 = radius * radius;
+
+ // indices
+ int i0 = 0;
+
+ // Counting vector
+ int max_count = 0;
+ float d2;
+ vector> tmp(queries.size());
+ vector> dists(queries.size());
+
+ // batch index
+ int b = 0;
+ int sum_qb = 0;
+ int sum_sb = 0;
+
+
+ // Search neigbors indices
+ // ***********************
+
+ for (auto& p0 : queries)
+ {
+ // Check if we changed batch
+ if (i0 == sum_qb + q_batches[b])
+ {
+ sum_qb += q_batches[b];
+ sum_sb += s_batches[b];
+ b++;
+ }
+
+ // Loop only over the supports of current batch
+ vector::iterator p_it;
+ int i = 0;
+ for(p_it = supports.begin() + sum_sb; p_it < supports.begin() + sum_sb + s_batches[b]; p_it++ )
+ {
+ d2 = (p0 - *p_it).sq_norm();
+ if (d2 < r2)
+ {
+ // Find order of the new point
+ auto it = std::upper_bound(dists[i0].begin(), dists[i0].end(), d2);
+ int index = std::distance(dists[i0].begin(), it);
+
+ // Insert element
+ dists[i0].insert(it, d2);
+ tmp[i0].insert(tmp[i0].begin() + index, sum_sb + i);
+
+ // Update max count
+ if (tmp[i0].size() > max_count)
+ max_count = tmp[i0].size();
+ }
+ i++;
+ }
+ i0++;
+ }
+
+ // Reserve the memory
+ neighbors_indices.resize(queries.size() * max_count);
+ i0 = 0;
+ for (auto& inds : tmp)
+ {
+ for (int j = 0; j < max_count; j++)
+ {
+ if (j < inds.size())
+ neighbors_indices[i0 * max_count + j] = inds[j];
+ else
+ neighbors_indices[i0 * max_count + j] = supports.size();
+ }
+ i0++;
+ }
+
+ return;
+}
+
+
+void batch_nanoflann_neighbors(vector& queries,
+ vector& supports,
+ vector& q_batches,
+ vector& s_batches,
+ vector& neighbors_indices,
+ float radius)
+{
+
+ // Initialize variables
+ // ******************
+
+ // indices
+ int i0 = 0;
+
+ // Square radius
+ float r2 = radius * radius;
+
+ // Counting vector
+ int max_count = 0;
+ float d2;
+ vector>> all_inds_dists(queries.size());
+
+ // batch index
+ int b = 0;
+ int sum_qb = 0;
+ int sum_sb = 0;
+
+ // Nanoflann related variables
+ // ***************************
+
+ // CLoud variable
+ PointCloud current_cloud;
+
+ // Tree parameters
+ nanoflann::KDTreeSingleIndexAdaptorParams tree_params(10 /* max leaf */);
+
+ // KDTree type definition
+ typedef nanoflann::KDTreeSingleIndexAdaptor< nanoflann::L2_Simple_Adaptor ,
+ PointCloud,
+ 3 > my_kd_tree_t;
+
+ // Pointer to trees
+ my_kd_tree_t* index;
+
+ // Build KDTree for the first batch element
+ current_cloud.pts = vector(supports.begin() + sum_sb, supports.begin() + sum_sb + s_batches[b]);
+ index = new my_kd_tree_t(3, current_cloud, tree_params);
+ index->buildIndex();
+
+
+ // Search neigbors indices
+ // ***********************
+
+ // Search params
+ nanoflann::SearchParams search_params;
+ search_params.sorted = true;
+
+ for (auto& p0 : queries)
+ {
+
+ // Check if we changed batch
+ if (i0 == sum_qb + q_batches[b])
+ {
+ sum_qb += q_batches[b];
+ sum_sb += s_batches[b];
+ b++;
+
+ // Change the points
+ current_cloud.pts.clear();
+ current_cloud.pts = vector(supports.begin() + sum_sb, supports.begin() + sum_sb + s_batches[b]);
+
+ // Build KDTree of the current element of the batch
+ delete index;
+ index = new my_kd_tree_t(3, current_cloud, tree_params);
+ index->buildIndex();
+ }
+
+ // Initial guess of neighbors size
+ all_inds_dists[i0].reserve(max_count);
+
+ // Find neighbors
+ float query_pt[3] = { p0.x, p0.y, p0.z};
+ size_t nMatches = index->radiusSearch(query_pt, r2, all_inds_dists[i0], search_params);
+
+ // Update max count
+ if (nMatches > max_count)
+ max_count = nMatches;
+
+ // Increment query idx
+ i0++;
+ }
+
+ // Reserve the memory
+ neighbors_indices.resize(queries.size() * max_count);
+ i0 = 0;
+ sum_sb = 0;
+ sum_qb = 0;
+ b = 0;
+ for (auto& inds_dists : all_inds_dists)
+ {
+ // Check if we changed batch
+ if (i0 == sum_qb + q_batches[b])
+ {
+ sum_qb += q_batches[b];
+ sum_sb += s_batches[b];
+ b++;
+ }
+
+ for (int j = 0; j < max_count; j++)
+ {
+ if (j < inds_dists.size())
+ neighbors_indices[i0 * max_count + j] = inds_dists[j].first + sum_sb;
+ else
+ neighbors_indices[i0 * max_count + j] = supports.size();
+ }
+ i0++;
+ }
+
+ delete index;
+
+ return;
+}
+
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/neighbors/neighbors.h b/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/neighbors/neighbors.h
new file mode 100644
index 00000000..ff612b0f
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/neighbors/neighbors.h
@@ -0,0 +1,29 @@
+
+
+#include "../../cpp_utils/cloud/cloud.h"
+#include "../../cpp_utils/nanoflann/nanoflann.hpp"
+
+#include
+#include
+
+using namespace std;
+
+
+void ordered_neighbors(vector& queries,
+ vector& supports,
+ vector& neighbors_indices,
+ float radius);
+
+void batch_ordered_neighbors(vector& queries,
+ vector& supports,
+ vector& q_batches,
+ vector& s_batches,
+ vector& neighbors_indices,
+ float radius);
+
+void batch_nanoflann_neighbors(vector& queries,
+ vector& supports,
+ vector& q_batches,
+ vector& s_batches,
+ vector& neighbors_indices,
+ float radius);
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/setup.py b/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/setup.py
new file mode 100644
index 00000000..8f53a9c3
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/setup.py
@@ -0,0 +1,28 @@
+from distutils.core import setup, Extension
+import numpy.distutils.misc_util
+
+# Adding OpenCV to project
+# ************************
+
+# Adding sources of the project
+# *****************************
+
+SOURCES = ["../cpp_utils/cloud/cloud.cpp",
+ "neighbors/neighbors.cpp",
+ "wrapper.cpp"]
+
+module = Extension(name="radius_neighbors",
+ sources=SOURCES,
+ extra_compile_args=['-std=c++11',
+ '-D_GLIBCXX_USE_CXX11_ABI=0'])
+
+
+setup(ext_modules=[module], include_dirs=numpy.distutils.misc_util.get_numpy_include_dirs())
+
+
+
+
+
+
+
+
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/wrapper.cpp b/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/wrapper.cpp
new file mode 100644
index 00000000..a4e28090
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_neighbors/wrapper.cpp
@@ -0,0 +1,238 @@
+#include
+#include
+#include "neighbors/neighbors.h"
+#include
+
+
+
+// docstrings for our module
+// *************************
+
+static char module_docstring[] = "This module provides two methods to compute radius neighbors from pointclouds or batch of pointclouds";
+
+static char batch_query_docstring[] = "Method to get radius neighbors in a batch of stacked pointclouds";
+
+
+// Declare the functions
+// *********************
+
+static PyObject *batch_neighbors(PyObject *self, PyObject *args, PyObject *keywds);
+
+
+// Specify the members of the module
+// *********************************
+
+static PyMethodDef module_methods[] =
+{
+ { "batch_query", (PyCFunction)batch_neighbors, METH_VARARGS | METH_KEYWORDS, batch_query_docstring },
+ {NULL, NULL, 0, NULL}
+};
+
+
+// Initialize the module
+// *********************
+
+static struct PyModuleDef moduledef =
+{
+ PyModuleDef_HEAD_INIT,
+ "radius_neighbors", // m_name
+ module_docstring, // m_doc
+ -1, // m_size
+ module_methods, // m_methods
+ NULL, // m_reload
+ NULL, // m_traverse
+ NULL, // m_clear
+ NULL, // m_free
+};
+
+PyMODINIT_FUNC PyInit_radius_neighbors(void)
+{
+ import_array();
+ return PyModule_Create(&moduledef);
+}
+
+
+// Definition of the batch_subsample method
+// **********************************
+
+static PyObject* batch_neighbors(PyObject* self, PyObject* args, PyObject* keywds)
+{
+
+ // Manage inputs
+ // *************
+
+ // Args containers
+ PyObject* queries_obj = NULL;
+ PyObject* supports_obj = NULL;
+ PyObject* q_batches_obj = NULL;
+ PyObject* s_batches_obj = NULL;
+
+ // Keywords containers
+ static char* kwlist[] = { "queries", "supports", "q_batches", "s_batches", "radius", NULL };
+ float radius = 0.1;
+
+ // Parse the input
+ if (!PyArg_ParseTupleAndKeywords(args, keywds, "OOOO|$f", kwlist, &queries_obj, &supports_obj, &q_batches_obj, &s_batches_obj, &radius))
+ {
+ PyErr_SetString(PyExc_RuntimeError, "Error parsing arguments");
+ return NULL;
+ }
+
+
+ // Interpret the input objects as numpy arrays.
+ PyObject* queries_array = PyArray_FROM_OTF(queries_obj, NPY_FLOAT, NPY_IN_ARRAY);
+ PyObject* supports_array = PyArray_FROM_OTF(supports_obj, NPY_FLOAT, NPY_IN_ARRAY);
+ PyObject* q_batches_array = PyArray_FROM_OTF(q_batches_obj, NPY_INT, NPY_IN_ARRAY);
+ PyObject* s_batches_array = PyArray_FROM_OTF(s_batches_obj, NPY_INT, NPY_IN_ARRAY);
+
+ // Verify data was load correctly.
+ if (queries_array == NULL)
+ {
+ Py_XDECREF(queries_array);
+ Py_XDECREF(supports_array);
+ Py_XDECREF(q_batches_array);
+ Py_XDECREF(s_batches_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting query points to numpy arrays of type float32");
+ return NULL;
+ }
+ if (supports_array == NULL)
+ {
+ Py_XDECREF(queries_array);
+ Py_XDECREF(supports_array);
+ Py_XDECREF(q_batches_array);
+ Py_XDECREF(s_batches_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting support points to numpy arrays of type float32");
+ return NULL;
+ }
+ if (q_batches_array == NULL)
+ {
+ Py_XDECREF(queries_array);
+ Py_XDECREF(supports_array);
+ Py_XDECREF(q_batches_array);
+ Py_XDECREF(s_batches_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting query batches to numpy arrays of type int32");
+ return NULL;
+ }
+ if (s_batches_array == NULL)
+ {
+ Py_XDECREF(queries_array);
+ Py_XDECREF(supports_array);
+ Py_XDECREF(q_batches_array);
+ Py_XDECREF(s_batches_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting support batches to numpy arrays of type int32");
+ return NULL;
+ }
+
+ // Check that the input array respect the dims
+ if ((int)PyArray_NDIM(queries_array) != 2 || (int)PyArray_DIM(queries_array, 1) != 3)
+ {
+ Py_XDECREF(queries_array);
+ Py_XDECREF(supports_array);
+ Py_XDECREF(q_batches_array);
+ Py_XDECREF(s_batches_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : query.shape is not (N, 3)");
+ return NULL;
+ }
+ if ((int)PyArray_NDIM(supports_array) != 2 || (int)PyArray_DIM(supports_array, 1) != 3)
+ {
+ Py_XDECREF(queries_array);
+ Py_XDECREF(supports_array);
+ Py_XDECREF(q_batches_array);
+ Py_XDECREF(s_batches_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : support.shape is not (N, 3)");
+ return NULL;
+ }
+ if ((int)PyArray_NDIM(q_batches_array) > 1)
+ {
+ Py_XDECREF(queries_array);
+ Py_XDECREF(supports_array);
+ Py_XDECREF(q_batches_array);
+ Py_XDECREF(s_batches_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : queries_batches.shape is not (B,) ");
+ return NULL;
+ }
+ if ((int)PyArray_NDIM(s_batches_array) > 1)
+ {
+ Py_XDECREF(queries_array);
+ Py_XDECREF(supports_array);
+ Py_XDECREF(q_batches_array);
+ Py_XDECREF(s_batches_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : supports_batches.shape is not (B,) ");
+ return NULL;
+ }
+ if ((int)PyArray_DIM(q_batches_array, 0) != (int)PyArray_DIM(s_batches_array, 0))
+ {
+ Py_XDECREF(queries_array);
+ Py_XDECREF(supports_array);
+ Py_XDECREF(q_batches_array);
+ Py_XDECREF(s_batches_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong number of batch elements: different for queries and supports ");
+ return NULL;
+ }
+
+ // Number of points
+ int Nq = (int)PyArray_DIM(queries_array, 0);
+ int Ns= (int)PyArray_DIM(supports_array, 0);
+
+ // Number of batches
+ int Nb = (int)PyArray_DIM(q_batches_array, 0);
+
+ // Call the C++ function
+ // *********************
+
+ // Convert PyArray to Cloud C++ class
+ vector queries;
+ vector supports;
+ vector q_batches;
+ vector s_batches;
+ queries = vector((PointXYZ*)PyArray_DATA(queries_array), (PointXYZ*)PyArray_DATA(queries_array) + Nq);
+ supports = vector((PointXYZ*)PyArray_DATA(supports_array), (PointXYZ*)PyArray_DATA(supports_array) + Ns);
+ q_batches = vector((int*)PyArray_DATA(q_batches_array), (int*)PyArray_DATA(q_batches_array) + Nb);
+ s_batches = vector((int*)PyArray_DATA(s_batches_array), (int*)PyArray_DATA(s_batches_array) + Nb);
+
+ // Create result containers
+ vector neighbors_indices;
+
+ // Compute results
+ //batch_ordered_neighbors(queries, supports, q_batches, s_batches, neighbors_indices, radius);
+ batch_nanoflann_neighbors(queries, supports, q_batches, s_batches, neighbors_indices, radius);
+
+ // Check result
+ if (neighbors_indices.size() < 1)
+ {
+ PyErr_SetString(PyExc_RuntimeError, "Error");
+ return NULL;
+ }
+
+ // Manage outputs
+ // **************
+
+ // Maximal number of neighbors
+ int max_neighbors = neighbors_indices.size() / Nq;
+
+ // Dimension of output containers
+ npy_intp* neighbors_dims = new npy_intp[2];
+ neighbors_dims[0] = Nq;
+ neighbors_dims[1] = max_neighbors;
+
+ // Create output array
+ PyObject* res_obj = PyArray_SimpleNew(2, neighbors_dims, NPY_INT);
+ PyObject* ret = NULL;
+
+ // Fill output array with values
+ size_t size_in_bytes = Nq * max_neighbors * sizeof(int);
+ memcpy(PyArray_DATA(res_obj), neighbors_indices.data(), size_in_bytes);
+
+ // Merge results
+ ret = Py_BuildValue("N", res_obj);
+
+ // Clean up
+ // ********
+
+ Py_XDECREF(queries_array);
+ Py_XDECREF(supports_array);
+ Py_XDECREF(q_batches_array);
+ Py_XDECREF(s_batches_array);
+
+ return ret;
+}
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/build.bat b/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/build.bat
new file mode 100644
index 00000000..8679a29a
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/build.bat
@@ -0,0 +1,5 @@
+@echo off
+py setup.py build_ext --inplace
+
+
+pause
\ No newline at end of file
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/grid_subsampling/grid_subsampling.cpp b/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/grid_subsampling/grid_subsampling.cpp
new file mode 100644
index 00000000..24276bb3
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/grid_subsampling/grid_subsampling.cpp
@@ -0,0 +1,211 @@
+
+#include "grid_subsampling.h"
+
+
+void grid_subsampling(vector& original_points,
+ vector& subsampled_points,
+ vector& original_features,
+ vector& subsampled_features,
+ vector& original_classes,
+ vector& subsampled_classes,
+ float sampleDl,
+ int verbose) {
+
+ // Initialize variables
+ // ******************
+
+ // Number of points in the cloud
+ size_t N = original_points.size();
+
+ // Dimension of the features
+ size_t fdim = original_features.size() / N;
+ size_t ldim = original_classes.size() / N;
+
+ // Limits of the cloud
+ PointXYZ minCorner = min_point(original_points);
+ PointXYZ maxCorner = max_point(original_points);
+ PointXYZ originCorner = floor(minCorner * (1/sampleDl)) * sampleDl;
+
+ // Dimensions of the grid
+ size_t sampleNX = (size_t)floor((maxCorner.x - originCorner.x) / sampleDl) + 1;
+ size_t sampleNY = (size_t)floor((maxCorner.y - originCorner.y) / sampleDl) + 1;
+ //size_t sampleNZ = (size_t)floor((maxCorner.z - originCorner.z) / sampleDl) + 1;
+
+ // Check if features and classes need to be processed
+ bool use_feature = original_features.size() > 0;
+ bool use_classes = original_classes.size() > 0;
+
+
+ // Create the sampled map
+ // **********************
+
+ // Verbose parameters
+ int i = 0;
+ int nDisp = N / 100;
+
+ // Initialize variables
+ size_t iX, iY, iZ, mapIdx;
+ unordered_map data;
+
+ for (auto& p : original_points)
+ {
+ // Position of point in sample map
+ iX = (size_t)floor((p.x - originCorner.x) / sampleDl);
+ iY = (size_t)floor((p.y - originCorner.y) / sampleDl);
+ iZ = (size_t)floor((p.z - originCorner.z) / sampleDl);
+ mapIdx = iX + sampleNX*iY + sampleNX*sampleNY*iZ;
+
+ // If not already created, create key
+ if (data.count(mapIdx) < 1)
+ data.emplace(mapIdx, SampledData(fdim, ldim));
+
+ // Fill the sample map
+ if (use_feature && use_classes)
+ data[mapIdx].update_all(p, original_features.begin() + i * fdim, original_classes.begin() + i * ldim);
+ else if (use_feature)
+ data[mapIdx].update_features(p, original_features.begin() + i * fdim);
+ else if (use_classes)
+ data[mapIdx].update_classes(p, original_classes.begin() + i * ldim);
+ else
+ data[mapIdx].update_points(p);
+
+ // Display
+ i++;
+ if (verbose > 1 && i%nDisp == 0)
+ std::cout << "\rSampled Map : " << std::setw(3) << i / nDisp << "%";
+
+ }
+
+ // Divide for barycentre and transfer to a vector
+ subsampled_points.reserve(data.size());
+ if (use_feature)
+ subsampled_features.reserve(data.size() * fdim);
+ if (use_classes)
+ subsampled_classes.reserve(data.size() * ldim);
+ for (auto& v : data)
+ {
+ subsampled_points.push_back(v.second.point * (1.0 / v.second.count));
+ if (use_feature)
+ {
+ float count = (float)v.second.count;
+ transform(v.second.features.begin(),
+ v.second.features.end(),
+ v.second.features.begin(),
+ [count](float f) { return f / count;});
+ subsampled_features.insert(subsampled_features.end(),v.second.features.begin(),v.second.features.end());
+ }
+ if (use_classes)
+ {
+ for (int i = 0; i < ldim; i++)
+ subsampled_classes.push_back(max_element(v.second.labels[i].begin(), v.second.labels[i].end(),
+ [](const pair&a, const pair&b){return a.second < b.second;})->first);
+ }
+ }
+
+ return;
+}
+
+
+void batch_grid_subsampling(vector& original_points,
+ vector& subsampled_points,
+ vector& original_features,
+ vector& subsampled_features,
+ vector& original_classes,
+ vector& subsampled_classes,
+ vector& original_batches,
+ vector& subsampled_batches,
+ float sampleDl,
+ int max_p)
+{
+ // Initialize variables
+ // ******************
+
+ int b = 0;
+ int sum_b = 0;
+
+ // Number of points in the cloud
+ size_t N = original_points.size();
+
+ // Dimension of the features
+ size_t fdim = original_features.size() / N;
+ size_t ldim = original_classes.size() / N;
+
+ // Handle max_p = 0
+ if (max_p < 1)
+ max_p = N;
+
+ // Loop over batches
+ // *****************
+
+ for (b = 0; b < original_batches.size(); b++)
+ {
+
+ // Extract batch points features and labels
+ vector b_o_points = vector(original_points.begin () + sum_b,
+ original_points.begin () + sum_b + original_batches[b]);
+
+ vector b_o_features;
+ if (original_features.size() > 0)
+ {
+ b_o_features = vector(original_features.begin () + sum_b * fdim,
+ original_features.begin () + (sum_b + original_batches[b]) * fdim);
+ }
+
+ vector b_o_classes;
+ if (original_classes.size() > 0)
+ {
+ b_o_classes = vector(original_classes.begin () + sum_b * ldim,
+ original_classes.begin () + sum_b + original_batches[b] * ldim);
+ }
+
+
+ // Create result containers
+ vector b_s_points;
+ vector b_s_features;
+ vector b_s_classes;
+
+ // Compute subsampling on current batch
+ grid_subsampling(b_o_points,
+ b_s_points,
+ b_o_features,
+ b_s_features,
+ b_o_classes,
+ b_s_classes,
+ sampleDl,
+ 0);
+
+ // Stack batches points features and labels
+ // ****************************************
+
+ // If too many points remove some
+ if (b_s_points.size() <= max_p)
+ {
+ subsampled_points.insert(subsampled_points.end(), b_s_points.begin(), b_s_points.end());
+
+ if (original_features.size() > 0)
+ subsampled_features.insert(subsampled_features.end(), b_s_features.begin(), b_s_features.end());
+
+ if (original_classes.size() > 0)
+ subsampled_classes.insert(subsampled_classes.end(), b_s_classes.begin(), b_s_classes.end());
+
+ subsampled_batches.push_back(b_s_points.size());
+ }
+ else
+ {
+ subsampled_points.insert(subsampled_points.end(), b_s_points.begin(), b_s_points.begin() + max_p);
+
+ if (original_features.size() > 0)
+ subsampled_features.insert(subsampled_features.end(), b_s_features.begin(), b_s_features.begin() + max_p * fdim);
+
+ if (original_classes.size() > 0)
+ subsampled_classes.insert(subsampled_classes.end(), b_s_classes.begin(), b_s_classes.begin() + max_p * ldim);
+
+ subsampled_batches.push_back(max_p);
+ }
+
+ // Stack new batch lengths
+ sum_b += original_batches[b];
+ }
+
+ return;
+}
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/grid_subsampling/grid_subsampling.h b/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/grid_subsampling/grid_subsampling.h
new file mode 100644
index 00000000..37f775d8
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/grid_subsampling/grid_subsampling.h
@@ -0,0 +1,101 @@
+
+
+#include "../../cpp_utils/cloud/cloud.h"
+
+#include
+#include
+
+using namespace std;
+
+class SampledData
+{
+public:
+
+ // Elements
+ // ********
+
+ int count;
+ PointXYZ point;
+ vector features;
+ vector> labels;
+
+
+ // Methods
+ // *******
+
+ // Constructor
+ SampledData()
+ {
+ count = 0;
+ point = PointXYZ();
+ }
+
+ SampledData(const size_t fdim, const size_t ldim)
+ {
+ count = 0;
+ point = PointXYZ();
+ features = vector(fdim);
+ labels = vector>(ldim);
+ }
+
+ // Method Update
+ void update_all(const PointXYZ p, vector::iterator f_begin, vector::iterator l_begin)
+ {
+ count += 1;
+ point += p;
+ transform (features.begin(), features.end(), f_begin, features.begin(), plus());
+ int i = 0;
+ for(vector::iterator it = l_begin; it != l_begin + labels.size(); ++it)
+ {
+ labels[i][*it] += 1;
+ i++;
+ }
+ return;
+ }
+ void update_features(const PointXYZ p, vector::iterator f_begin)
+ {
+ count += 1;
+ point += p;
+ transform (features.begin(), features.end(), f_begin, features.begin(), plus());
+ return;
+ }
+ void update_classes(const PointXYZ p, vector::iterator l_begin)
+ {
+ count += 1;
+ point += p;
+ int i = 0;
+ for(vector::iterator it = l_begin; it != l_begin + labels.size(); ++it)
+ {
+ labels[i][*it] += 1;
+ i++;
+ }
+ return;
+ }
+ void update_points(const PointXYZ p)
+ {
+ count += 1;
+ point += p;
+ return;
+ }
+};
+
+void grid_subsampling(vector& original_points,
+ vector& subsampled_points,
+ vector& original_features,
+ vector& subsampled_features,
+ vector& original_classes,
+ vector& subsampled_classes,
+ float sampleDl,
+ int verbose);
+
+void batch_grid_subsampling(vector& original_points,
+ vector& subsampled_points,
+ vector& original_features,
+ vector& subsampled_features,
+ vector& original_classes,
+ vector& subsampled_classes,
+ vector& original_batches,
+ vector& subsampled_batches,
+ float sampleDl,
+ int max_p);
+
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/setup.py b/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/setup.py
new file mode 100644
index 00000000..32062999
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/setup.py
@@ -0,0 +1,28 @@
+from distutils.core import setup, Extension
+import numpy.distutils.misc_util
+
+# Adding OpenCV to project
+# ************************
+
+# Adding sources of the project
+# *****************************
+
+SOURCES = ["../cpp_utils/cloud/cloud.cpp",
+ "grid_subsampling/grid_subsampling.cpp",
+ "wrapper.cpp"]
+
+module = Extension(name="grid_subsampling",
+ sources=SOURCES,
+ extra_compile_args=['-std=c++11',
+ '-D_GLIBCXX_USE_CXX11_ABI=0'])
+
+
+setup(ext_modules=[module], include_dirs=numpy.distutils.misc_util.get_numpy_include_dirs())
+
+
+
+
+
+
+
+
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/wrapper.cpp b/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/wrapper.cpp
new file mode 100644
index 00000000..8a92aaab
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_subsampling/wrapper.cpp
@@ -0,0 +1,566 @@
+#include
+#include
+#include "grid_subsampling/grid_subsampling.h"
+#include
+
+
+
+// docstrings for our module
+// *************************
+
+static char module_docstring[] = "This module provides an interface for the subsampling of a batch of stacked pointclouds";
+
+static char subsample_docstring[] = "function subsampling a pointcloud";
+
+static char subsample_batch_docstring[] = "function subsampling a batch of stacked pointclouds";
+
+
+// Declare the functions
+// *********************
+
+static PyObject *cloud_subsampling(PyObject* self, PyObject* args, PyObject* keywds);
+static PyObject *batch_subsampling(PyObject *self, PyObject *args, PyObject *keywds);
+
+
+// Specify the members of the module
+// *********************************
+
+static PyMethodDef module_methods[] =
+{
+ { "subsample", (PyCFunction)cloud_subsampling, METH_VARARGS | METH_KEYWORDS, subsample_docstring },
+ { "subsample_batch", (PyCFunction)batch_subsampling, METH_VARARGS | METH_KEYWORDS, subsample_batch_docstring },
+ {NULL, NULL, 0, NULL}
+};
+
+
+// Initialize the module
+// *********************
+
+static struct PyModuleDef moduledef =
+{
+ PyModuleDef_HEAD_INIT,
+ "grid_subsampling", // m_name
+ module_docstring, // m_doc
+ -1, // m_size
+ module_methods, // m_methods
+ NULL, // m_reload
+ NULL, // m_traverse
+ NULL, // m_clear
+ NULL, // m_free
+};
+
+PyMODINIT_FUNC PyInit_grid_subsampling(void)
+{
+ import_array();
+ return PyModule_Create(&moduledef);
+}
+
+
+// Definition of the batch_subsample method
+// **********************************
+
+static PyObject* batch_subsampling(PyObject* self, PyObject* args, PyObject* keywds)
+{
+
+ // Manage inputs
+ // *************
+
+ // Args containers
+ PyObject* points_obj = NULL;
+ PyObject* features_obj = NULL;
+ PyObject* classes_obj = NULL;
+ PyObject* batches_obj = NULL;
+
+ // Keywords containers
+ static char* kwlist[] = { "points", "batches", "features", "classes", "sampleDl", "method", "max_p", "verbose", NULL };
+ float sampleDl = 0.1;
+ const char* method_buffer = "barycenters";
+ int verbose = 0;
+ int max_p = 0;
+
+ // Parse the input
+ if (!PyArg_ParseTupleAndKeywords(args, keywds, "OO|$OOfsii", kwlist, &points_obj, &batches_obj, &features_obj, &classes_obj, &sampleDl, &method_buffer, &max_p, &verbose))
+ {
+ PyErr_SetString(PyExc_RuntimeError, "Error parsing arguments");
+ return NULL;
+ }
+
+ // Get the method argument
+ string method(method_buffer);
+
+ // Interpret method
+ if (method.compare("barycenters") && method.compare("voxelcenters"))
+ {
+ PyErr_SetString(PyExc_RuntimeError, "Error parsing method. Valid method names are \"barycenters\" and \"voxelcenters\" ");
+ return NULL;
+ }
+
+ // Check if using features or classes
+ bool use_feature = true, use_classes = true;
+ if (features_obj == NULL)
+ use_feature = false;
+ if (classes_obj == NULL)
+ use_classes = false;
+
+ // Interpret the input objects as numpy arrays.
+ PyObject* points_array = PyArray_FROM_OTF(points_obj, NPY_FLOAT, NPY_IN_ARRAY);
+ PyObject* batches_array = PyArray_FROM_OTF(batches_obj, NPY_INT, NPY_IN_ARRAY);
+ PyObject* features_array = NULL;
+ PyObject* classes_array = NULL;
+ if (use_feature)
+ features_array = PyArray_FROM_OTF(features_obj, NPY_FLOAT, NPY_IN_ARRAY);
+ if (use_classes)
+ classes_array = PyArray_FROM_OTF(classes_obj, NPY_INT, NPY_IN_ARRAY);
+
+ // Verify data was load correctly.
+ if (points_array == NULL)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(batches_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting input points to numpy arrays of type float32");
+ return NULL;
+ }
+ if (batches_array == NULL)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(batches_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting input batches to numpy arrays of type int32");
+ return NULL;
+ }
+ if (use_feature && features_array == NULL)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(batches_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting input features to numpy arrays of type float32");
+ return NULL;
+ }
+ if (use_classes && classes_array == NULL)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(batches_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting input classes to numpy arrays of type int32");
+ return NULL;
+ }
+
+ // Check that the input array respect the dims
+ if ((int)PyArray_NDIM(points_array) != 2 || (int)PyArray_DIM(points_array, 1) != 3)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(batches_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : points.shape is not (N, 3)");
+ return NULL;
+ }
+ if ((int)PyArray_NDIM(batches_array) > 1)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(batches_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : batches.shape is not (B,) ");
+ return NULL;
+ }
+ if (use_feature && ((int)PyArray_NDIM(features_array) != 2))
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(batches_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : features.shape is not (N, d)");
+ return NULL;
+ }
+
+ if (use_classes && (int)PyArray_NDIM(classes_array) > 2)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(batches_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : classes.shape is not (N,) or (N, d)");
+ return NULL;
+ }
+
+ // Number of points
+ int N = (int)PyArray_DIM(points_array, 0);
+
+ // Number of batches
+ int Nb = (int)PyArray_DIM(batches_array, 0);
+
+ // Dimension of the features
+ int fdim = 0;
+ if (use_feature)
+ fdim = (int)PyArray_DIM(features_array, 1);
+
+ //Dimension of labels
+ int ldim = 1;
+ if (use_classes && (int)PyArray_NDIM(classes_array) == 2)
+ ldim = (int)PyArray_DIM(classes_array, 1);
+
+ // Check that the input array respect the number of points
+ if (use_feature && (int)PyArray_DIM(features_array, 0) != N)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(batches_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : features.shape is not (N, d)");
+ return NULL;
+ }
+ if (use_classes && (int)PyArray_DIM(classes_array, 0) != N)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(batches_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : classes.shape is not (N,) or (N, d)");
+ return NULL;
+ }
+
+
+ // Call the C++ function
+ // *********************
+
+ // Create pyramid
+ if (verbose > 0)
+ cout << "Computing cloud pyramid with support points: " << endl;
+
+
+ // Convert PyArray to Cloud C++ class
+ vector original_points;
+ vector original_batches;
+ vector original_features;
+ vector original_classes;
+ original_points = vector((PointXYZ*)PyArray_DATA(points_array), (PointXYZ*)PyArray_DATA(points_array) + N);
+ original_batches = vector((int*)PyArray_DATA(batches_array), (int*)PyArray_DATA(batches_array) + Nb);
+ if (use_feature)
+ original_features = vector((float*)PyArray_DATA(features_array), (float*)PyArray_DATA(features_array) + N * fdim);
+ if (use_classes)
+ original_classes = vector((int*)PyArray_DATA(classes_array), (int*)PyArray_DATA(classes_array) + N * ldim);
+
+ // Subsample
+ vector subsampled_points;
+ vector subsampled_features;
+ vector subsampled_classes;
+ vector subsampled_batches;
+ batch_grid_subsampling(original_points,
+ subsampled_points,
+ original_features,
+ subsampled_features,
+ original_classes,
+ subsampled_classes,
+ original_batches,
+ subsampled_batches,
+ sampleDl,
+ max_p);
+
+ // Check result
+ if (subsampled_points.size() < 1)
+ {
+ PyErr_SetString(PyExc_RuntimeError, "Error");
+ return NULL;
+ }
+
+ // Manage outputs
+ // **************
+
+ // Dimension of input containers
+ npy_intp* point_dims = new npy_intp[2];
+ point_dims[0] = subsampled_points.size();
+ point_dims[1] = 3;
+ npy_intp* feature_dims = new npy_intp[2];
+ feature_dims[0] = subsampled_points.size();
+ feature_dims[1] = fdim;
+ npy_intp* classes_dims = new npy_intp[2];
+ classes_dims[0] = subsampled_points.size();
+ classes_dims[1] = ldim;
+ npy_intp* batches_dims = new npy_intp[1];
+ batches_dims[0] = Nb;
+
+ // Create output array
+ PyObject* res_points_obj = PyArray_SimpleNew(2, point_dims, NPY_FLOAT);
+ PyObject* res_batches_obj = PyArray_SimpleNew(1, batches_dims, NPY_INT);
+ PyObject* res_features_obj = NULL;
+ PyObject* res_classes_obj = NULL;
+ PyObject* ret = NULL;
+
+ // Fill output array with values
+ size_t size_in_bytes = subsampled_points.size() * 3 * sizeof(float);
+ memcpy(PyArray_DATA(res_points_obj), subsampled_points.data(), size_in_bytes);
+ size_in_bytes = Nb * sizeof(int);
+ memcpy(PyArray_DATA(res_batches_obj), subsampled_batches.data(), size_in_bytes);
+ if (use_feature)
+ {
+ size_in_bytes = subsampled_points.size() * fdim * sizeof(float);
+ res_features_obj = PyArray_SimpleNew(2, feature_dims, NPY_FLOAT);
+ memcpy(PyArray_DATA(res_features_obj), subsampled_features.data(), size_in_bytes);
+ }
+ if (use_classes)
+ {
+ size_in_bytes = subsampled_points.size() * ldim * sizeof(int);
+ res_classes_obj = PyArray_SimpleNew(2, classes_dims, NPY_INT);
+ memcpy(PyArray_DATA(res_classes_obj), subsampled_classes.data(), size_in_bytes);
+ }
+
+
+ // Merge results
+ if (use_feature && use_classes)
+ ret = Py_BuildValue("NNNN", res_points_obj, res_batches_obj, res_features_obj, res_classes_obj);
+ else if (use_feature)
+ ret = Py_BuildValue("NNN", res_points_obj, res_batches_obj, res_features_obj);
+ else if (use_classes)
+ ret = Py_BuildValue("NNN", res_points_obj, res_batches_obj, res_classes_obj);
+ else
+ ret = Py_BuildValue("NN", res_points_obj, res_batches_obj);
+
+ // Clean up
+ // ********
+
+ Py_DECREF(points_array);
+ Py_DECREF(batches_array);
+ Py_XDECREF(features_array);
+ Py_XDECREF(classes_array);
+
+ return ret;
+}
+
+// Definition of the subsample method
+// ****************************************
+
+static PyObject* cloud_subsampling(PyObject* self, PyObject* args, PyObject* keywds)
+{
+
+ // Manage inputs
+ // *************
+
+ // Args containers
+ PyObject* points_obj = NULL;
+ PyObject* features_obj = NULL;
+ PyObject* classes_obj = NULL;
+
+ // Keywords containers
+ static char* kwlist[] = { "points", "features", "classes", "sampleDl", "method", "verbose", NULL };
+ float sampleDl = 0.1;
+ const char* method_buffer = "barycenters";
+ int verbose = 0;
+
+ // Parse the input
+ if (!PyArg_ParseTupleAndKeywords(args, keywds, "O|$OOfsi", kwlist, &points_obj, &features_obj, &classes_obj, &sampleDl, &method_buffer, &verbose))
+ {
+ PyErr_SetString(PyExc_RuntimeError, "Error parsing arguments");
+ return NULL;
+ }
+
+ // Get the method argument
+ string method(method_buffer);
+
+ // Interpret method
+ if (method.compare("barycenters") && method.compare("voxelcenters"))
+ {
+ PyErr_SetString(PyExc_RuntimeError, "Error parsing method. Valid method names are \"barycenters\" and \"voxelcenters\" ");
+ return NULL;
+ }
+
+ // Check if using features or classes
+ bool use_feature = true, use_classes = true;
+ if (features_obj == NULL)
+ use_feature = false;
+ if (classes_obj == NULL)
+ use_classes = false;
+
+ // Interpret the input objects as numpy arrays.
+ PyObject* points_array = PyArray_FROM_OTF(points_obj, NPY_FLOAT, NPY_IN_ARRAY);
+ PyObject* features_array = NULL;
+ PyObject* classes_array = NULL;
+ if (use_feature)
+ features_array = PyArray_FROM_OTF(features_obj, NPY_FLOAT, NPY_IN_ARRAY);
+ if (use_classes)
+ classes_array = PyArray_FROM_OTF(classes_obj, NPY_INT, NPY_IN_ARRAY);
+
+ // Verify data was load correctly.
+ if (points_array == NULL)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting input points to numpy arrays of type float32");
+ return NULL;
+ }
+ if (use_feature && features_array == NULL)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting input features to numpy arrays of type float32");
+ return NULL;
+ }
+ if (use_classes && classes_array == NULL)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Error converting input classes to numpy arrays of type int32");
+ return NULL;
+ }
+
+ // Check that the input array respect the dims
+ if ((int)PyArray_NDIM(points_array) != 2 || (int)PyArray_DIM(points_array, 1) != 3)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : points.shape is not (N, 3)");
+ return NULL;
+ }
+ if (use_feature && ((int)PyArray_NDIM(features_array) != 2))
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : features.shape is not (N, d)");
+ return NULL;
+ }
+
+ if (use_classes && (int)PyArray_NDIM(classes_array) > 2)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : classes.shape is not (N,) or (N, d)");
+ return NULL;
+ }
+
+ // Number of points
+ int N = (int)PyArray_DIM(points_array, 0);
+
+ // Dimension of the features
+ int fdim = 0;
+ if (use_feature)
+ fdim = (int)PyArray_DIM(features_array, 1);
+
+ //Dimension of labels
+ int ldim = 1;
+ if (use_classes && (int)PyArray_NDIM(classes_array) == 2)
+ ldim = (int)PyArray_DIM(classes_array, 1);
+
+ // Check that the input array respect the number of points
+ if (use_feature && (int)PyArray_DIM(features_array, 0) != N)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : features.shape is not (N, d)");
+ return NULL;
+ }
+ if (use_classes && (int)PyArray_DIM(classes_array, 0) != N)
+ {
+ Py_XDECREF(points_array);
+ Py_XDECREF(classes_array);
+ Py_XDECREF(features_array);
+ PyErr_SetString(PyExc_RuntimeError, "Wrong dimensions : classes.shape is not (N,) or (N, d)");
+ return NULL;
+ }
+
+
+ // Call the C++ function
+ // *********************
+
+ // Create pyramid
+ if (verbose > 0)
+ cout << "Computing cloud pyramid with support points: " << endl;
+
+
+ // Convert PyArray to Cloud C++ class
+ vector original_points;
+ vector original_features;
+ vector original_classes;
+ original_points = vector((PointXYZ*)PyArray_DATA(points_array), (PointXYZ*)PyArray_DATA(points_array) + N);
+ if (use_feature)
+ original_features = vector((float*)PyArray_DATA(features_array), (float*)PyArray_DATA(features_array) + N * fdim);
+ if (use_classes)
+ original_classes = vector((int*)PyArray_DATA(classes_array), (int*)PyArray_DATA(classes_array) + N * ldim);
+
+ // Subsample
+ vector subsampled_points;
+ vector subsampled_features;
+ vector subsampled_classes;
+ grid_subsampling(original_points,
+ subsampled_points,
+ original_features,
+ subsampled_features,
+ original_classes,
+ subsampled_classes,
+ sampleDl,
+ verbose);
+
+ // Check result
+ if (subsampled_points.size() < 1)
+ {
+ PyErr_SetString(PyExc_RuntimeError, "Error");
+ return NULL;
+ }
+
+ // Manage outputs
+ // **************
+
+ // Dimension of input containers
+ npy_intp* point_dims = new npy_intp[2];
+ point_dims[0] = subsampled_points.size();
+ point_dims[1] = 3;
+ npy_intp* feature_dims = new npy_intp[2];
+ feature_dims[0] = subsampled_points.size();
+ feature_dims[1] = fdim;
+ npy_intp* classes_dims = new npy_intp[2];
+ classes_dims[0] = subsampled_points.size();
+ classes_dims[1] = ldim;
+
+ // Create output array
+ PyObject* res_points_obj = PyArray_SimpleNew(2, point_dims, NPY_FLOAT);
+ PyObject* res_features_obj = NULL;
+ PyObject* res_classes_obj = NULL;
+ PyObject* ret = NULL;
+
+ // Fill output array with values
+ size_t size_in_bytes = subsampled_points.size() * 3 * sizeof(float);
+ memcpy(PyArray_DATA(res_points_obj), subsampled_points.data(), size_in_bytes);
+ if (use_feature)
+ {
+ size_in_bytes = subsampled_points.size() * fdim * sizeof(float);
+ res_features_obj = PyArray_SimpleNew(2, feature_dims, NPY_FLOAT);
+ memcpy(PyArray_DATA(res_features_obj), subsampled_features.data(), size_in_bytes);
+ }
+ if (use_classes)
+ {
+ size_in_bytes = subsampled_points.size() * ldim * sizeof(int);
+ res_classes_obj = PyArray_SimpleNew(2, classes_dims, NPY_INT);
+ memcpy(PyArray_DATA(res_classes_obj), subsampled_classes.data(), size_in_bytes);
+ }
+
+
+ // Merge results
+ if (use_feature && use_classes)
+ ret = Py_BuildValue("NNN", res_points_obj, res_features_obj, res_classes_obj);
+ else if (use_feature)
+ ret = Py_BuildValue("NN", res_points_obj, res_features_obj);
+ else if (use_classes)
+ ret = Py_BuildValue("NN", res_points_obj, res_classes_obj);
+ else
+ ret = Py_BuildValue("N", res_points_obj);
+
+ // Clean up
+ // ********
+
+ Py_DECREF(points_array);
+ Py_XDECREF(features_array);
+ Py_XDECREF(classes_array);
+
+ return ret;
+}
\ No newline at end of file
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_utils/cloud/cloud.cpp b/competing_methods/my_KPConv/cpp_wrappers/cpp_utils/cloud/cloud.cpp
new file mode 100644
index 00000000..c285140d
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_utils/cloud/cloud.cpp
@@ -0,0 +1,67 @@
+//
+//
+// 0==========================0
+// | Local feature test |
+// 0==========================0
+//
+// version 1.0 :
+// >
+//
+//---------------------------------------------------
+//
+// Cloud source :
+// Define usefull Functions/Methods
+//
+//----------------------------------------------------
+//
+// Hugues THOMAS - 10/02/2017
+//
+
+
+#include "cloud.h"
+
+
+// Getters
+// *******
+
+PointXYZ max_point(std::vector points)
+{
+ // Initialize limits
+ PointXYZ maxP(points[0]);
+
+ // Loop over all points
+ for (auto p : points)
+ {
+ if (p.x > maxP.x)
+ maxP.x = p.x;
+
+ if (p.y > maxP.y)
+ maxP.y = p.y;
+
+ if (p.z > maxP.z)
+ maxP.z = p.z;
+ }
+
+ return maxP;
+}
+
+PointXYZ min_point(std::vector points)
+{
+ // Initialize limits
+ PointXYZ minP(points[0]);
+
+ // Loop over all points
+ for (auto p : points)
+ {
+ if (p.x < minP.x)
+ minP.x = p.x;
+
+ if (p.y < minP.y)
+ minP.y = p.y;
+
+ if (p.z < minP.z)
+ minP.z = p.z;
+ }
+
+ return minP;
+}
\ No newline at end of file
diff --git a/competing_methods/my_KPConv/cpp_wrappers/cpp_utils/cloud/cloud.h b/competing_methods/my_KPConv/cpp_wrappers/cpp_utils/cloud/cloud.h
new file mode 100644
index 00000000..99d4e194
--- /dev/null
+++ b/competing_methods/my_KPConv/cpp_wrappers/cpp_utils/cloud/cloud.h
@@ -0,0 +1,185 @@
+//
+//
+// 0==========================0
+// | Local feature test |
+// 0==========================0
+//
+// version 1.0 :
+// >
+//
+//---------------------------------------------------
+//
+// Cloud header
+//
+//----------------------------------------------------
+//
+// Hugues THOMAS - 10/02/2017
+//
+
+
+# pragma once
+
+#include
+#include
+#include