arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1812.11166cs.CVcs.AI
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从看不见的类中学习重构类

Learning to Reconstruct Shapes from Unseen Classes

MIT CSAIL(麻省理工学院计算机科学与人工智能实验室);Google Research(谷歌研究院)

Xiuming Zhang, Zhoutong Zhang, Chengkai Zhang, Joshua B. Tenenbaum, William T. Freeman, Jiajun Wu

摘要:

从单个图像中,人类能够通过利用从日常生活中学习的形状先验来感知物体的完整3D形状。当代的单图像3D重建算法旨在以类似的方式解决这一任务,但通常最终得到的先验知识受到训练类的高度偏见。在这里,我们提出了一种算法,可推广的重建(GenRe),旨在捕捉更通用的,类不可知的形状先验。我们通过一个推理网络和训练过程来实现这一点,该过程结合了可见表面的2.5D表示(深度和轮廓),可见和不可见表面的球形表示以及基于3D体素的表示,以一种原则性的方式利用3D形状如何产生2D图像的因果结构。实验表明,GenRe在单视图形状重建上表现良好,并从训练期间未看到的类别中推广到各种新对象。

英文摘要:

From a single image, humans are able to perceive the full 3D shape of an object by exploiting learned shape priors from everyday life. Contemporary single-image 3D reconstruction algorithms aim to solve this task in a similar fashion, but often end up with priors that are highly biased by training classes. Here we present an algorithm, Generalizable Reconstruction (GenRe), designed to capture more generic, class-agnostic shape priors. We achieve this with an inference network and training procedure that combine 2.5D representations of visible surfaces (depth and silhouette), spherical shape representations of both visible and non-visible surfaces, and 3D voxel-based representations, in a principled manner that exploits the causal structure of how 3D shapes give rise to 2D images. Experiments demonstrate that GenRe performs well on single-view shape reconstruction, and generalizes to diverse novel objects from categories not seen during training.

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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