论文标题
变形感知3D模型嵌入和检索
Deformation-Aware 3D Model Embedding and Retrieval
论文作者
论文摘要
我们介绍了一个新的问题,即检索可变形为给定查询形状的3D模型,并提出了一种新颖的深层变形感知嵌入,以解决此检索任务。 3D模型检索是从嘈杂和部分3D扫描中恢复干净完整的3D模型的基本操作。但是,考虑到有限的3D形状集合,即使是最接近查询的模型也可能不满意。这促使我们应用3D模型变形技术以适应检索到的模型以更好地适合查询。但是,在大多数3D变形技术中都执行了某些限制,以保留原始模型的重要特征,以防止将变形模型完美地拟合到查询中。变形模型和查询之间的差距会引起模型之间的不对称关系,这些关系无法通过典型的度量学习技术来处理。因此,为了检索最佳的拟合模型,我们提出了一种新型的深层嵌入方法,该方法通过利用与位置依赖的自我为中心距离领域来学习不对称关系。我们还提出了两种培训嵌入网络的策略。我们证明,这两种方法在合成和真实数据的实验中都超过了其他基线。可以在https://deformscan2cad.github.io/上找到我们的项目页面。
We introduce a new problem of retrieving 3D models that are deformable to a given query shape and present a novel deep deformation-aware embedding to solve this retrieval task. 3D model retrieval is a fundamental operation for recovering a clean and complete 3D model from a noisy and partial 3D scan. However, given a finite collection of 3D shapes, even the closest model to a query may not be satisfactory. This motivates us to apply 3D model deformation techniques to adapt the retrieved model so as to better fit the query. Yet, certain restrictions are enforced in most 3D deformation techniques to preserve important features of the original model that prevent a perfect fitting of the deformed model to the query. This gap between the deformed model and the query induces asymmetric relationships among the models, which cannot be handled by typical metric learning techniques. Thus, to retrieve the best models for fitting, we propose a novel deep embedding approach that learns the asymmetric relationships by leveraging location-dependent egocentric distance fields. We also propose two strategies for training the embedding network. We demonstrate that both of these approaches outperform other baselines in our experiments with both synthetic and real data. Our project page can be found at https://deformscan2cad.github.io/.