Overview

The Progressive Compression filter implements the paper "Compressed Progressive Meshes, Pajarola and Rossignac, IEEE Transactions on Visualization and Computer Graphics (2000)" with minor differences.
The progressive compression method simplifies iteratively the input mesh to generate different levels of details (LoDs).
These LoDs can then be transmitted progressively in a coarse-to-fine way at the decompression.
The methods uses a fixed quantization for vertex coordinates.

See the Progressive Decompression Filter for the decompression step.

Parameters

Parameter	Description
Mesh	Mesh to encode.
Point map	Point map which associated vertices to their positions.
Vertex color map	Vertex color map used for debugging.
Edge color map	Edge color map used for debugging.
Geometry trait	Geometry trait object to apply geometry-based operations.
Parameters	Parameters are the progressive compression parameters.
Output path	Output path is needed to generate measure path and binary path (when set to "").
Binary path	Binary path is the name of the output (binary) file. It is either set by the user or automatically set using output path, predictor, metric, keptposition and quantization information.
Nb max batches	Maximum number of batches to apply to get the final (the coarsest) mesh.
Nb min vertices	Minimum number that the final (the coarsest) mesh must have.
Batch condition	Batch condition (stopping criterion) must be either ALL_EDGES or REACH_THRESHOLD.
Preprocess	Preprocess is a boolean, when true removes isolated vertices and edges and then remove vertex position duplicates.
Dequantif	Dequantif is a boolean, when true apply a vertex position dequantization after encoding termination.
Save preprocess	Save proprocess is a boolean, when true save a mesh after te proprocess step and before the encoding starts.
Output file path save preprocess	Output file path save preprocess is the file name given to the mesh saved when Save proprocess is true.

Supported data structures

The supported data structures are: CGAL Polyhedron3, CGAL Surface_mesh, CGAL LCC. OpenMesh and AIF are not yet supported.

Restrictions

Applies to manifold triangular meshes only.

References

compression

R. Pajarola, J. Rossignac,
Compressed progressive meshes,
IEEE Transactions on Visualization and Computer Graphics, 2000.