Spectral coding of mesh geometry with a hierarchical set partitioning algorithm
Visual Communications and Image Processing 2008, San Jose, CA, Amerika Birleşik Devletleri, 29 - 31 Ocak 2008, cilt.6822, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Cilt numarası: 6822
- Doi Numarası: 10.1117/12.764851
- Basıldığı Şehir: San Jose, CA
- Basıldığı Ülke: Amerika Birleşik Devletleri
- Anahtar Kelimeler: Hierarchical set partitioning, Mesh geometry compression, Progressive coding, Spectral compression
- Boğaziçi Üniversitesi Adresli: Evet
Özet
We propose a progressive mesh geometry coder, which expresses geometry information in terms of spectral coefficients obtained through a transformation and codes these coefficients using a hierarchical set partitioning algorithm. The spectral transformation used is the one proposed in [10] where the spectral coefficients are obtained by projecting the mesh geometry onto an orthonormal basis determined by mesh topology. The set partitioning method that jointly codes the zeroes of these coefficients, treats the spectral coefficients for each of the three spatial coordinates with the right priority at all bit planes and realizes a truly embedded bitstream by implicit bit allocation. The experiments on common irregular meshes reveal that the distortion-rate performance of our coder is significantly superior to that of the spectral coder of [10]. © 2008 SPIE-IS&T.