add by clzhang.
The Point Cloud Library (PCL) is a standalone, large scale, open project for 2D/3D image and point cloud processing.
PCL is released under the terms of the BSD license, and thus free for commercial and research use. We are financially supported by a consortium of commercial companies, with our own non-profit organization, Open Perception. We would also like to thank individual donors and contributors that have been helping the project.