Python .e57 files reader/writer
Project description
pye57
Python wrapper of LibE57Format to read and write .e57 point cloud files
Example usage
import numpy as np
import pye57
e57 = pye57.E57("e57_file.e57")
# read scan at index 0
data = e57.read_scan(0)
# 'data' is a dictionary with the point types as keys
assert isinstance(data["cartesianX"], np.ndarray)
assert isinstance(data["cartesianY"], np.ndarray)
assert isinstance(data["cartesianZ"], np.ndarray)
# other attributes can be read using:
data = e57.read_scan(0, intensity=True, colors=True, row_column=True)
assert isinstance(data["cartesianX"], np.ndarray)
assert isinstance(data["cartesianY"], np.ndarray)
assert isinstance(data["cartesianZ"], np.ndarray)
assert isinstance(data["intensity"], np.ndarray)
assert isinstance(data["colorRed"], np.ndarray)
assert isinstance(data["colorGreen"], np.ndarray)
assert isinstance(data["colorBlue"], np.ndarray)
assert isinstance(data["rowIndex"], np.ndarray)
assert isinstance(data["columnIndex"], np.ndarray)
# the 'read_scan' method filters points using the 'cartesianInvalidState' field
# if you want to get everything as raw, untransformed data, use:
data_raw = e57.read_scan_raw(0)
# writing is also possible, but only using raw data for now
e57_write = pye57.E57("e57_file_write.e57", mode='w')
e57_write.write_scan_raw(data_raw)
# you can specify a header to copy information from
e57_write.write_scan_raw(data_raw, scan_header=e57.get_header(0))
# the ScanHeader object wraps most of the scan information:
header = e57.get_header(0)
print(header.point_count)
print(header.rotation_matrix)
print(header.translation)
# all the header information can be printed using:
for line in header.pretty_print():
print(line)
# the scan position can be accessed with:
position_scan_0 = e57.scan_position(0)
# the binding is very close to the E57Foundation API
# you can modify the nodes easily from python
imf = e57.image_file
root = imf.root()
data3d = root["data3D"]
scan_0 = data3d[0]
translation_x = scan_0["pose"]["translation"]["x"]
Installation
On linux, Windows or Apple Silicon:
python -m pip install pye57
On macOS with Intel CPU you can try to build from source (advanced users):
Building from source (for developers)
Cloning the repository with required submodule
Clone a new repository along with the libe57Format submodule
git clone https://github.com/davidcaron/pye57.git --recursive
If the repository has already been previously cloned, but without the --recursive flag
cd pye57 # go to the cloned repository
git submodule init # this will initialise the submodules in the repository
git submodule update # this will update the submodules in the repository
Dependencies on Linux
Install libxerces-c-dev first.
sudo apt install libxerces-c-dev
Dependencies on Windows
To get xerces-c, you can either build from source or if you're using conda:
conda install -y xerces-c
Dependencies on MacOS
To get xerces-c, run:
bash ./scripts/install_xerces_c.sh
Run pip install from the repo source
cd pye57
python -m pip install .
Uninstalling
Use pip again
python -m pip uninstall pye57
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