论文标题
种子形式：基于贴片种子的点云完成，带有Uplample Transformer
SeedFormer: Patch Seeds based Point Cloud Completion with Upsample Transformer
论文作者
论文摘要
在3D点云的一代任务中，点云完成越来越流行，因为从其部分观察中恢复了3D对象的完整形状是一个具有挑战性但必不可少的问题。在本文中，我们提出了一种新型的种子形式，以提高点云完成中细节保存和恢复的能力。与以前的基于全局特征向量的方法不同，我们引入了一种新的形状表示形式，即补丁种子，它不仅从部分输入中捕获一般结构，而且还保留了本地模式的区域信息。然后，通过将种子特征集成到生成过程中，我们可以以粗到精细的方式恢复忠实的细节，以获取完整的点云。此外，我们通过将变压器结构扩展到点发生器的基本操作来设计上样本变压器，该结构有效地结合了相邻点之间的空间和语义关系。定性和定量评估表明，我们的方法在多个基准数据集上优于最先进的完成网络。我们的代码可从https://github.com/hrzhou2/seedformer获得。
Point cloud completion has become increasingly popular among generation tasks of 3D point clouds, as it is a challenging yet indispensable problem to recover the complete shape of a 3D object from its partial observation. In this paper, we propose a novel SeedFormer to improve the ability of detail preservation and recovery in point cloud completion. Unlike previous methods based on a global feature vector, we introduce a new shape representation, namely Patch Seeds, which not only captures general structures from partial inputs but also preserves regional information of local patterns. Then, by integrating seed features into the generation process, we can recover faithful details for complete point clouds in a coarse-to-fine manner. Moreover, we devise an Upsample Transformer by extending the transformer structure into basic operations of point generators, which effectively incorporates spatial and semantic relationships between neighboring points. Qualitative and quantitative evaluations demonstrate that our method outperforms state-of-the-art completion networks on several benchmark datasets. Our code is available at https://github.com/hrzhou2/seedformer.
