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Development

This guide will help you setup a development environment to launch and contribute to Meshroom.

Requirements

AliceVision

Meshroom relies on the AliceVision framework. AliceVision's binaries must be in the path while running Meshroom. To build AliceVision, follow this guide.

Meshroom also relies on specific files provided with AliceVision.

  • sensor database: a text database of sensor width per camera model. Provided in AliceVision source tree: {ALICEVISION_REPOSITORY}/src/aliceVision/sensorDB/cameraSensors.db
  • voctree (optional): for larger datasets (>200 images), greatly improves image matching performances. It can be downloaded here.
  • sphere detection model (optional): for the automated sphere detection in stereo photometry. It can be downloaded here.
  • semantic segmentation model (optional): for the semantic segmentation of objects. It can be downloaded here.

Environment variables must be set for Meshroom to find those files:

ALICEVISION_SENSOR_DB=/path/to/database
ALICEVISION_VOCTREE=/path/to/voctree
ALICEVISION_SPHERE_DETECTION_MODEL=/path/to/detection/model
ALICEVISION_SEMANTIC_SEGMENTATION_MODEL=/path/to/segmentation/model
ALICEVISION_ROOT=/path/to/AliceVision/install/directory

Python Environment

  • Windows: Python 3 (>=3.5)
  • Linux: Python 3 (>=3.5)

To install all the requirements for runtime, development and packaging, simply run:

pip install -r requirements.txt -r dev_requirements.txt

Note: dev_requirements is only related to testing and packaging. It is not mandatory to run Meshroom.

Qt/PySide

and then copied into PySide's installation folder, in plugins/sceneparsers.

Qt Plugin

An additional Qt plugin can be built to extend Meshroom UI features. It can be found on a separate repository, though it might get better integration in the future. Note that it is optional but highly recommended.

QtAliceVision

It uses AliceVision to load and visualize intermediate reconstruction files and OpenImageIO as backend to read RAW/EXR images. It also adds support for Alembic file loading in Meshroom's 3D viewport, which allows to visualize sparse reconstruction results (point clouds and cameras).

QML2_IMPORT_PATH=/path/to/QtAliceVision/install/qml
QT_PLUGIN_PATH=/path/to/QtAliceVision/install