Encoding Quadrilateral Meshes in 2.40 bits per Vertex
نویسندگان
چکیده
In this note, we show that the encoding scheme discussed in [1] for quadrilateral meshes can be improved to 2.40 bits per vertex, using arithmetic coding. This is a considerable improvement over the current bound of 2.67 bits per vertex.
منابع مشابه
Efficient Face-Based Non-Split Connectivity Compression for Quad and Triangle-Quad Meshes
In this paper we present an efficient face-based connectivity coding technique for the special class of quadrilateral and the hybrid triangular-quadrilateral meshes. This work extends the main ideas of non-split encoding presented by the first contribution of the authors (Khattab, Abd El-Latif, Abdel Wahab and Tolba, 2007) for triangle meshes and improves over the compression results provided s...
متن کاملConnectivity Compression for Irregular Quadrilateral Meshes
Applications that require Internet access to remote 3D datasets are often limited by the storage costs of 3D models. Several compression methods are available to address these limits for objects represented by triangle meshes. Many CAD and VRML models, however, are represented as quadrilateral meshes or mixed triangle/quadrilateral meshes, and these models may also require compression. We prese...
متن کاملEncoding Quadrilateral Meshes
An important problem in geometric compression is to find succinct representations (encoding schemes) for the conectivity of polygonal meshes. In this note, we show that the encoding scheme discussed in [1] for quadrilateral mesh connectivity can be improved from 3.5 bits per vertex to less than 3 bits per vertex. We also show that an easy equivalence between the labelling schemes of King et al ...
متن کاملEfficient Coding of Non-Triangular Mesh Connectivity
We describe an efficient algorithm for coding the connectivity information of general polygon meshes. In contrast to most existing algorithms which are suitable only for triangular meshes, and pay a penalty for treatment of nontriangular faces, this algorithm codes the connectivity information in a direct manner. Our treatment of the special case of triangular meshes is shown to be equivalent t...
متن کاملSurface Smoothing and Quality Improvement of Quadrilateral/Hexahedral Meshes with Geometric Flow
This paper describes an approach to smooth the surface and improve the quality of quadrilateral/hexahedral meshes with feature preserved using geometric flow. For quadrilateral surface meshes, the surface diffusion flow is selected to remove noise by relocating vertices in the normal direction, and the aspect ratio is improved with feature preserved by adjusting vertex positions in the tangent ...
متن کامل