Extending the Addon

The addon follows a modular approach to simplify the extensibility of additional libraries. Each supported library requires the implementation of a corresponding FileHandler and ImportOperator - see the figure below. The FileHandler parses library specific file formats or directory structures and returns library agnostic information of cameras, points and meshes. The ImportOperator may use different classes provided by the framework (e.g. CameraImporter, PointImporter and MeshImporter) to define the required import options and to import the reconstruction extracted by the FileHandler.

Integration of the addon with Blender - illustrated with the Colmap importer. In order to support additional SfM and MVS libraries it is sufficient to implement the corresponding import operators and file handlers. To simplify the figure only relevant classes and methods are shown.