Progressive Animation for Dynamic 3D Mesh Sequences

• Main Authors: Wei-Cheng Lin, 林偉成
• Other Authors: Tsong-Wuu Lin
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/17154213982464775035

碩士 === 中原大學 === 資訊工程研究所 === 97 === Dynamic 3D mesh sequences, which are also called 3D animation, have been widely used in the movie and gaming industries. Because the 3D models are more complex and high resolution, the large requirements of dynamic mesh data make it difficult for a number of applications such as rendering, transmitting over a network. Based on universal media access (UMA), providing a suitable resolution according to characteristics of the end user’s terminal environment is needed. This paper proposes a multiresolution representation for 3D animation. The proposed representation correlates both geometry and connectivity for refining the coarse animation. This method transforms traditional 3D animation representation into a more compact format that takes up less storage space. The main idea is to reconstruct the most important components and coarse model first, which are called base animation, and then to load the refined model with less important components as the refining operators. In addition, because considerable preprocessing is carried out during the encoding stage, this method can achieve real-time rendering, lower memory requirements, and less computation time during the decoding stage. There are two kinds of refined operators, the one is refining the geometry part and the other is refining the connectivity part. After the simplification, the base animation appears by only few faces. More detailed or highly resolution animation appears by using 80% of original faces, but only requires 3% of original storage space. Our method based on progressive concept, getting more refined animation via refined operators during playing the animation. Consequently, this approach enables a continue level of detail for dynamic 3D mesh sequences.