arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1807.02740cs.CVcs.CGcs.LG
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数据驱动的点云上采样

Data-driven Upsampling of Point Clouds

Carnegie Mellon University(卡内基梅隆大学)

Wentai Zhang, Haoliang Jiang, Zhangsihao Yang, Soji Yamakawa, Kenji Shimada, Levent Burak Kara

摘要:

稀疏3D点云的高质量上采样对于诸如重建、渲染、网格化和分析等广泛的几何操作至关重要。在本文中,我们提出了一种数据驱动的算法,使3D点云的上采样,而不需要硬编码的规则。我们的方法使用了一个深度网络,倒角距离作为损失函数,能够学习属于不同对象类别的点云中的潜在特征。我们在不同的放大因子中评估我们的算法,对属于同一类别以及不同类别的对象进行上采样学习和执行。我们还探讨了理想的输入点云的点样本的分布的函数的特性。最后,我们展示了我们的算法在单类别训练与多类别训练场景中的性能。最后提出的模型与基线,基于优化的上采样方法进行比较。结果表明,我们的算法是能够产生更均匀和准确的上采样。

英文摘要:

High quality upsampling of sparse 3D point clouds is critically useful for a wide range of geometric operations such as reconstruction, rendering, meshing, and analysis. In this paper, we propose a data-driven algorithm that enables an upsampling of 3D point clouds without the need for hard-coded rules. Our approach uses a deep network with Chamfer distance as the loss function, capable of learning the latent features in point clouds belonging to different object categories. We evaluate our algorithm across different amplification factors, with upsampling learned and performed on objects belonging to the same category as well as different categories. We also explore the desirable characteristics of input point clouds as a function of the distribution of the point samples. Finally, we demonstrate the performance of our algorithm in single-category training versus multi-category training scenarios. The final proposed model is compared against a baseline, optimization-based upsampling method. Results indicate that our algorithm is capable of generating more uniform and accurate upsamplings.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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