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View Code? Open in Web Editor NEWOctree-based lossy point-cloud compression with open3d and numpy
License: Other
Octree-based lossy point-cloud compression with open3d and numpy
License: Other
## Octree-based lossy point-cloud compression with open3d and numpy Average compressing rate (depends on octreee depth setting parameter): 0.012 - 0.1 (Original article: Szutor Péter: Ipari pontfelhők tömörítése, Dr. Balázs Boglárka (szerk.) Az elmélet és a gyakorlat találkozása a térinformatikában VIII. Theory meets practice in GIS Debrecen, Magyarország Debreceni Egyetemi Kiadó, (2017) pp. 349-355) Input formats: You can get a list of supported formats from : http://www.open3d.org/docs/release/tutorial/Basic/file_io.html#point-cloud (xyz,pts,ply,pcd) Usage: Dependencies: Open3D, Numpy (You can install theese modules: pip install open3d, pip install numpy) Compress a point cloud: octreezip(<filename>,<depth>) -> <result> <filename>: (str) Point Cloud file name. Saved file name: [filename without ext]_ocz.npz (Yes, it's a numpy array file) <depth> : (str) Octree depth. You can try 11-16 for best result. Bigger depht results higher precision and bigger compressed file size. <result> : (str) If the compressing was success you get: "Compressed into:[comp.file name] | Storing resolution:0.003445". Storing resolution means the precision. The PC file is missing or bad: "PC is empty, bad, or missing" Other error: "Error: [error message]" Uncompressing: octreeunzip(<filename>) -> <result> <filename>: (str) Zipped Point Cloud file name (npz). Saved file name: [filename].xyz (standard XYZ text file) <result> : (str) If the compressing was success you get: "Saved: [filename].xyz" Other error: "Error: [error message]"
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