Abstract
In this paper, we propose an efficient geometry compression algorithm for three-dimensional (3-D) mesh sequences based on the two-stage vertex-wise motion vector (MV) prediction. In general, the MV of a vertex is highly correlated to those of the adjacent vertices. To exploit this high correlation, we define the neighborhood of a vertex, and predict the MV of the vertex from those of the neighborhood. The error vectors are related to the local shape changes of 3-D objects, and still have redundancy. To remove the redundancy, the error vectors are also predicted, at the second stage, spatially or temporally by using a rate-distortion optimization technique. It is shown that the proposed algorithm has simpler structure than the existing segment-based algorithm, and yields better compression performance.
Original language | English |
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Pages (from-to) | 1178-1184 |
Number of pages | 7 |
Journal | IEEE Transactions on Circuits and Systems for Video Technology |
Volume | 12 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2002 Dec |
Externally published | Yes |
Keywords
- Rate-distortion optimization
- Triangle mesh sequence
- Vertex-wise motion vector prediction
ASJC Scopus subject areas
- Media Technology
- Electrical and Electronic Engineering