├── src ├── test.glb ├── test.las ├── build.bat ├── lasviewer.py └── las2mesh.py ├── material ├── icon.ico ├── icon.png ├── icon.pptx └── izukyushimoda_d11.png ├── release ├── 標準(d=10).bat ├── 軽量(d=9).bat ├── 高品質(d=11).bat └── readme.txt ├── README.md ├── .gitignore └── LICENSE /src/test.glb: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ksasao/Las2Mesh/HEAD/src/test.glb -------------------------------------------------------------------------------- /src/test.las: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ksasao/Las2Mesh/HEAD/src/test.las -------------------------------------------------------------------------------- /material/icon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ksasao/Las2Mesh/HEAD/material/icon.ico -------------------------------------------------------------------------------- /material/icon.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ksasao/Las2Mesh/HEAD/material/icon.png -------------------------------------------------------------------------------- /material/icon.pptx: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ksasao/Las2Mesh/HEAD/material/icon.pptx -------------------------------------------------------------------------------- /release/標準(d=10).bat: -------------------------------------------------------------------------------- 1 | @echo off 2 | cd %~dp0 3 | las2mesh.exe -d 10 %1 %2 %3 %4 %5 %6 %7 %8 %9 -------------------------------------------------------------------------------- /release/軽量(d=9).bat: -------------------------------------------------------------------------------- 1 | @echo off 2 | cd %~dp0 3 | las2mesh.exe -d 9 %1 %2 %3 %4 %5 %6 %7 %8 %9 -------------------------------------------------------------------------------- /release/高品質(d=11).bat: -------------------------------------------------------------------------------- 1 | @echo off 2 | cd %~dp0 3 | las2mesh.exe -d 11 %1 %2 %3 %4 %5 %6 %7 %8 %9 -------------------------------------------------------------------------------- /material/izukyushimoda_d11.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ksasao/Las2Mesh/HEAD/material/izukyushimoda_d11.png -------------------------------------------------------------------------------- /src/build.bat: -------------------------------------------------------------------------------- 1 | @echo off 2 | cd %~dp0 3 | pyinstaller --onefile las2mesh.py --icon ..\material\icon.ico 4 | copy /Y .\dist\las2mesh.exe ..\release -------------------------------------------------------------------------------- /release/readme.txt: -------------------------------------------------------------------------------- 1 | Las2Mesh v0.2 2 | 2022/4/11 @ksasao 3 | 4 | 点群(.las)ファイルを3Dモデルに変換するツールです。 5 | 詳細は下記を参照してください。 6 | 7 | https://github.com/ksasao/Las2Mesh 8 | 9 | las2mesh.exe の代わりに 軽量(d=9).bat などに .las ファイルを Drag&Drop すると 10 | 出力される3Dモデルのポリゴン数が変化します。 -------------------------------------------------------------------------------- /src/lasviewer.py: -------------------------------------------------------------------------------- 1 | import numpy as np 2 | import open3d as o3d 3 | import laspy 4 | import argparse 5 | 6 | lasviewer_version = "LasViewer v1.0 based on Las2Mesh" 7 | 8 | # lasファイルから点群を追加する 9 | def add_points(filename,points,colors): 10 | las = laspy.read(filename) 11 | scales = las.header.scales 12 | points = np.vstack([points,np.column_stack([las.points.X * scales[0], las.points.Y * scales[1], las.points.Z * scales[2]])]) 13 | if hasattr(las.points,'red'): 14 | # カラーあり 15 | colors = np.vstack([colors,np.column_stack([las.points.red,las.points.green,las.points.blue])/65535.]) 16 | else: 17 | # カラーなし(グレー表示) 18 | colors = np.vstack([colors,np.column_stack([np.full((len(las.X), 3),0.5)])]) 19 | return points,colors 20 | 21 | # 複数の .lasファイルを読み込み1つの点群にする 22 | def load_files(files): 23 | vec = np.empty((0,3)) 24 | col = np.empty((0,3)) 25 | 26 | for filename in files: 27 | vec,col = add_points(filename,vec,col) 28 | print(filename + " => " + str(len(vec)) + " points(total)") 29 | 30 | # 端が原点となるように移動 31 | min = np.amin(vec, axis=0) 32 | max = np.amax(vec, axis=0) 33 | vec = vec - min 34 | bbox = max-min 35 | print(f"size: {bbox[0]:.1f} x {bbox[1]:.1f} x {bbox[2]:.1f} (m)") 36 | pcd = o3d.geometry.PointCloud() 37 | pcd.points = o3d.utility.Vector3dVector(vec) 38 | pcd.colors = o3d.utility.Vector3dVector(col) 39 | return pcd 40 | 41 | def main(): 42 | print(lasviewer_version) 43 | parser = argparse.ArgumentParser(description='.lasファイルを表示します') 44 | parser.add_argument('files', help='対象の .lasファイル。複数指定できます。', nargs='*') 45 | args = parser.parse_args() 46 | 47 | if len(args.files)==0: 48 | parser.print_help() 49 | return 50 | 51 | pcd = load_files(args.files) 52 | 53 | # 操作方法 http://www.open3d.org/docs/latest/tutorial/Basic/visualization.html 54 | o3d.visualization.draw_geometries([pcd],window_name=lasviewer_version) # 画面表示 55 | 56 | if __name__ == '__main__': 57 | main() 58 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Las2Mesh 2 | 3 | 点群(.las形式)ファイルを3Dモデルに変換するツールです。出力形式は、.ply, .stl, .obj, .off, .gltf, glb に対応しています。 4 | 5 | ## ダウンロード 6 | 7 | - [v0.2](https://github.com/ksasao/Las2Mesh/releases/download/v0.2/las2mesh_v0.2.zip) (2022/04/11) 8 | - [過去のバージョン](https://github.com/ksasao/Las2Mesh/releases) 9 | 10 | ## 利用方法 11 | 12 | las2mesh.exe に 点群ファイル(.las) を Drag&Drop してください。複数まとめて Drag&Drop すると1つの3Dモデルとして出力されます。デフォルトのファイル名は output.ply です。出力形式は -o オプションで指定したファイル名の拡張子で自動判別します。なお、いずれも頂点カラーで出力されます。 13 | 14 | ![伊豆急下田駅周辺(-d 11オプションを指定)](material/izukyushimoda_d11.png) 15 | [G空間情報センター 静岡県　富士山南東部・伊豆東部　点群データLPデータ](https://www.geospatial.jp/ckan/dataset/shizuoka-2019-pointcloud/resource/d5e98a7b-f15c-45b0-bf40-0287f5b1de68) の .las ファイルを用いて作成 (ライセンス: [クリエイティブ・コモンズ 表示](http://opendefinition.org/licenses/cc-by/)) 16 | 17 | ### オプション 18 | 19 | ```txt 20 | Las2Mesh v0.2 21 | usage: las2mesh.py [-h] [-d DEPTH] [-o OUTPUT] [-n] [files ...] 22 | 23 | .lasファイルからメッシュを生成します 24 | 25 | positional arguments: 26 | files 対象の .lasファイル。複数指定できます。 27 | 28 | optional arguments: 29 | -h, --help show this help message and exit 30 | -d DEPTH, --depth DEPTH 31 | メッシュの細かさを整数で指定します。デフォルト値は 10 です。 32 | -o OUTPUT, --output OUTPUT 33 | 出力ファイル名を指定します。デフォルト値は output.ply です。出力形式は、.ply, .stl, .obj, .off, .gltf に対応しています。 34 | -n, --nopreview 3Dプレビュー表示を無効にします 35 | ``` 36 | 37 | ## M1 Mac用環境設定 38 | 39 | Pythonインストール 40 | ``` 41 | brew install python 42 | ``` 43 | 44 | python コマンドを有効にする 45 | ``` 46 | sudo ln -s /opt/homebrew/bin/python3 /opt/homebrew/bin/python 47 | ``` 48 | 49 | [Open3D](https://github.com/isl-org/Open3D)をビルドする ([see also](http://www.open3d.org/docs/release/compilation.html)) 50 | ``` 51 | git clone https://github.com/isl-org/Open3D 52 | cd Open3D 53 | mkdir build 54 | cd build 55 | cmake .. 56 | 57 | make -j$(sysctl -n hw.physicalcpu) 58 | sudo make install 59 | make install-pip-package 60 | make python-package 61 | make pip-package 62 | ``` 63 | 64 | Python用ライブラリをインストール 65 | ``` 66 | pip3 install numpy laspy pygltflib 67 | ``` 68 | 69 | 変換テスト (Las2Meshをclone後) 70 | ``` 71 | cd src 72 | python las2mesh.py test.las -o test.glb 73 | ``` 74 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # binary 2 | *.exe 3 | 4 | # Byte-compiled / optimized / DLL files 5 | __pycache__/ 6 | *.py[cod] 7 | *$py.class 8 | 9 | # C extensions 10 | *.so 11 | 12 | # Distribution / packaging 13 | .Python 14 | build/ 15 | develop-eggs/ 16 | dist/ 17 | downloads/ 18 | eggs/ 19 | .eggs/ 20 | lib/ 21 | lib64/ 22 | parts/ 23 | sdist/ 24 | var/ 25 | wheels/ 26 | pip-wheel-metadata/ 27 | share/python-wheels/ 28 | *.egg-info/ 29 | .installed.cfg 30 | *.egg 31 | MANIFEST 32 | 33 | # PyInstaller 34 | # Usually these files are written by a python script from a template 35 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 36 | *.manifest 37 | *.spec 38 | 39 | # Installer logs 40 | pip-log.txt 41 | pip-delete-this-directory.txt 42 | 43 | # Unit test / coverage reports 44 | htmlcov/ 45 | .tox/ 46 | .nox/ 47 | .coverage 48 | .coverage.* 49 | .cache 50 | nosetests.xml 51 | coverage.xml 52 | *.cover 53 | *.py,cover 54 | .hypothesis/ 55 | .pytest_cache/ 56 | 57 | # Translations 58 | *.mo 59 | *.pot 60 | 61 | # Django stuff: 62 | *.log 63 | local_settings.py 64 | db.sqlite3 65 | db.sqlite3-journal 66 | 67 | # Flask stuff: 68 | instance/ 69 | .webassets-cache 70 | 71 | # Scrapy stuff: 72 | .scrapy 73 | 74 | # Sphinx documentation 75 | docs/_build/ 76 | 77 | # PyBuilder 78 | target/ 79 | 80 | # Jupyter Notebook 81 | .ipynb_checkpoints 82 | 83 | # IPython 84 | profile_default/ 85 | ipython_config.py 86 | 87 | # pyenv 88 | .python-version 89 | 90 | # pipenv 91 | # According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control. 92 | # However, in case of collaboration, if having platform-specific dependencies or dependencies 93 | # having no cross-platform support, pipenv may install dependencies that don't work, or not 94 | # install all needed dependencies. 95 | #Pipfile.lock 96 | 97 | # PEP 582; used by e.g. github.com/David-OConnor/pyflow 98 | __pypackages__/ 99 | 100 | # Celery stuff 101 | celerybeat-schedule 102 | celerybeat.pid 103 | 104 | # SageMath parsed files 105 | *.sage.py 106 | 107 | # Environments 108 | .env 109 | .venv 110 | env/ 111 | venv/ 112 | ENV/ 113 | env.bak/ 114 | venv.bak/ 115 | 116 | # Spyder project settings 117 | .spyderproject 118 | .spyproject 119 | 120 | # Rope project settings 121 | .ropeproject 122 | 123 | # mkdocs documentation 124 | /site 125 | 126 | # mypy 127 | .mypy_cache/ 128 | .dmypy.json 129 | dmypy.json 130 | 131 | # Pyre type checker 132 | .pyre/ 133 | -------------------------------------------------------------------------------- /src/las2mesh.py: -------------------------------------------------------------------------------- 1 | import numpy as np 2 | import open3d as o3d 3 | import laspy 4 | import argparse 5 | from pygltflib.utils import gltf2glb 6 | import os 7 | 8 | las2mesh_version = "Las2Mesh v0.3b" 9 | 10 | # lasファイルから点群を追加する 11 | def add_points(filename,points,colors): 12 | las = laspy.read(filename) 13 | scales = las.header.scales 14 | points = np.vstack([points,np.column_stack([las.points.X * scales[0], las.points.Y * scales[1], las.points.Z * scales[2]])]) 15 | if hasattr(las.points,'red'): 16 | # カラーあり 17 | colors = np.vstack([colors,np.column_stack([las.points.red,las.points.green,las.points.blue])/65535.]) 18 | else: 19 | # カラーなし(グレー表示) 20 | colors = np.vstack([colors,np.column_stack([np.full((len(las.X), 3),0.5)])]) 21 | return points,colors 22 | 23 | # 複数の .lasファイルを読み込み1つの点群にする 24 | def load_files(files): 25 | vec = np.empty((0,3)) 26 | col = np.empty((0,3)) 27 | 28 | for filename in files: 29 | vec,col = add_points(filename,vec,col) 30 | print(filename + " => " + str(len(vec)) + " points(total)") 31 | 32 | # 端が原点となるように移動 33 | min = np.amin(vec, axis=0) 34 | max = np.amax(vec, axis=0) 35 | vec = vec - min 36 | bbox = max-min 37 | print(f"size: {bbox[0]:.1f} x {bbox[1]:.1f} x {bbox[2]:.1f} (m)") 38 | pcd = o3d.geometry.PointCloud() 39 | pcd.points = o3d.utility.Vector3dVector(vec) 40 | pcd.colors = o3d.utility.Vector3dVector(col) 41 | return pcd 42 | 43 | # 点群からメッシュを生成 44 | def create_mesh(point_cloud, mesh_depth): 45 | # 法線の推定 46 | point_cloud.estimate_normals(search_param=o3d.geometry.KDTreeSearchParamKNN(knn=20)) 47 | point_cloud.orient_normals_to_align_with_direction(orientation_reference=np.array([0., 0., 1.])) # Upの軸を指定する 48 | 49 | # メッシュ化 50 | with o3d.utility.VerbosityContextManager( 51 | o3d.utility.VerbosityLevel.Debug) as cm: 52 | poisson_mesh, densities = o3d.geometry.TriangleMesh.create_from_point_cloud_poisson( 53 | point_cloud, depth=mesh_depth) 54 | print(poisson_mesh) 55 | 56 | bbox = point_cloud.get_axis_aligned_bounding_box() 57 | mesh = poisson_mesh.crop(bbox) 58 | 59 | # メッシュの軽量化 60 | # decimation_ratio = 0.5 61 | # count = len(mesh.triangles) 62 | #mesh = mesh.simplify_quadric_decimation(int(count * decimation_ratio)) 63 | return mesh 64 | 65 | def write_mesh(filename, mesh): 66 | body, ext = os.path.splitext(filename) 67 | if ext == ".glb": 68 | gltf_file = body + ".gltf" 69 | o3d.io.write_triangle_mesh(gltf_file, mesh, write_ascii=False, write_vertex_normals=True) 70 | gltf2glb(gltf_file, override=True) 71 | os.remove(gltf_file) 72 | else: 73 | o3d.io.write_triangle_mesh(filename, mesh, write_ascii=False, write_vertex_normals=True) 74 | 75 | def main(): 76 | print(las2mesh_version) 77 | parser = argparse.ArgumentParser(description='.lasファイルからメッシュを生成します') 78 | parser.add_argument('files', help='対象の .lasファイル。複数指定できます。', nargs='*') 79 | parser.add_argument('-d','--depth', default=10, type=int, help='メッシュの細かさを整数で指定します。デフォルト値は 10 です。') 80 | parser.add_argument('-o','--output', default='output.ply', help='出力ファイル名を指定します。デフォルト値は output.ply です。出力形式は、.ply, .stl, .obj, .off, .gltf に対応しています。') 81 | parser.add_argument('-n','--nopreview', action='store_true', help='3Dプレビュー表示を無効にします') 82 | args = parser.parse_args() 83 | 84 | if len(args.files)==0: 85 | parser.print_help() 86 | return 87 | 88 | pcd = load_files(args.files) 89 | output_path = args.output 90 | depth = args.depth 91 | 92 | mesh = create_mesh(pcd, depth) 93 | write_mesh(output_path, mesh) 94 | 95 | if not args.nopreview: 96 | # o3d.visualization.draw(mesh) # 詳細設定用 97 | o3d.visualization.draw_geometries([mesh], window_name=las2mesh_version + " - " + output_path + " (preview)") # 画面表示 98 | # 操作方法 http://www.open3d.org/docs/latest/tutorial/Basic/visualization.html 99 | 100 | if __name__ == '__main__': 101 | main() 102 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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