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Concept
Point Cloud Library
Summary
The Point Cloud Library (PCL) is an open-source library of algorithms for point cloud processing tasks and 3D geometry processing, such as occur in three-dimensional computer vision. The library contains algorithms for filtering, feature estimation, surface reconstruction, 3D registration, model fitting, object recognition, and . Each module is implemented as a smaller library that can be compiled separately (for example, libpcl_filters, libpcl_features, libpcl_surface, ...). PCL has its own data format for storing point clouds - PCD (Point Cloud Data), but also allows datasets to be loaded and saved in many other formats. It is written in C++ and released under the BSD license.
These algorithms have been used, for example, for perception in robotics to filter outliers from noisy data, stitch 3D point clouds together, segment relevant parts of a scene, extract keypoints and compute descriptors to recognize objects in the world based on their geometric appearance, and create surfaces from point clouds and visualize them.
PCL requires several third-party libraries to function, which must be installed. Most mathematical operations are implemented using the Eigen library. The visualization module for 3D point clouds is based on VTK. Boost is used for shared pointers and the FLANN library for quick k-nearest neighbor search. Additional libraries such as Qhull, OpenNI, or Qt are optional and extend PCL with additional features.
PCL is cross-platform software that runs on the most commonly used operating systems: Linux, Windows, macOS and Android. The library is fully integrated with the Robot Operating System (ROS) and provides support for OpenMP and Intel Threading Building Blocks (TBB) libraries for multi-core parallelism.
The library is constantly updated and expanded, and its use in various industries is constantly growing. For example, PCL participated in the Google Summer of Code 2020 initiative with three projects. One was the extension of PCL for use with Python using Pybind11.
Official source
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