【摘要】 为提升三维网格的压缩性能,提出了一种网格法向与几何帧内-帧间预测编码方法.该方法充分利用法向数据内部分量间(帧内)及几何与法向数据间(帧间)的相关性,实现附加法向信息的三维网格压缩,有效保持解码后三维网格的几何特性.实验结果表明,提出的预测编码方法相比分别压缩三维网格法向与几何数据,能够显著提高附加法向信息三维网格的压缩效率.更多还原

【Abstract】 As an important data type of digital geometric media, 3 D mesh can accurately record the geometric information on the surface of models. The complexity and precision of 3 D meshes have been increased, which has brought huge pressure for storage and transmission. In order to improve the compression performance of 3 D mesh, a geometry and normal intra-inter prediction encoding method was proposed. Utilizing the correlation of internal components of the normal data(intra-frame) and the correlation between the geometric and normal data(inter-frame), the method was designed to realize the compression of 3 D mesh and to effectively maintain geometric characteristics of decoded 3 D mesh. Experimental results show that, in comparison with compressing the normal and geometric data respectively, the proposed prediction encoding methods can significantly increase compression efficiency for 3 D mesh with normal data.更多还原