arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.07077cs.CV
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基于图像序列数据关联和界标估计的三维物体理解自监督学习

Self-supervised Learning of 3D Object Understanding by Data Association and Landmark Estimation for Image Sequence

Robotics Institute, Carnegie Mellon University(卡内基梅隆大学机器人研究所)

Hyeonwoo Yu, Jean Oh

摘要:

在本文中,我们提出了一种自监督学习方法的多目标姿态估计。从二维图像中理解三维目标是一个具有挑战性的任务,它需要从降维信息中推断出目标的三维空间维数,特别是目标的三维位置或方向的估计需要精确的推理,而不像其他简单的聚类任务,如目标分类。因此,训练数据集的规模变得更加关键。然而,由于实现3D标注昂贵且耗时,因此获得大量的3D数据集是具有挑战性的。如果训练数据集的规模可以通过包含简单导航获得的图像序列来增加,则可以克服数据集的规模限制,并有效地适应新的环境。然而,当网络自身对单幅图像进行自标注时,网络的训练性能受到网络自身性能的限制。因此,我们提出了一种利用图像序列中目标的多个观测值来超越自身性能的策略:首先,通过网络预测和数据关联来估计全局目标图的界标,并获得单帧的校正标注。然后,利用自标注得到的数据集进行网络微调,从而超越网络本身的性能边界.在KITTI驾驶场景数据集上对该方法进行了评估,我们证明了该方法在3D空间中多目标姿态估计方面的性能改进。

英文摘要:

In this paper, we propose a self-supervised learningmethod for multi-object pose estimation. 3D object under-standing from 2D image is a challenging task that infers ad-ditional dimension from reduced-dimensional information.In particular, the estimation of the 3D localization or orien-tation of an object requires precise reasoning, unlike othersimple clustering tasks such as object classification. There-fore, the scale of the training dataset becomes more cru-cial. However, it is challenging to obtain large amount of3D dataset since achieving 3D annotation is expensive andtime-consuming. If the scale of the training dataset can beincreased by involving the image sequence obtained fromsimple navigation, it is possible to overcome the scale lim-itation of the dataset and to have efficient adaptation tothe new environment. However, when the self annotation isconducted on single image by the network itself, trainingperformance of the network is bounded to the self perfor-mance. Therefore, we propose a strategy to exploit multipleobservations of the object in the image sequence in orderto surpass the self-performance: first, the landmarks for theglobal object map are estimated through network predic-tion and data association, and the corrected annotation fora single frame is obtained. Then, network fine-tuning is con-ducted including the dataset obtained by self-annotation,thereby exceeding the performance boundary of the networkitself. The proposed method was evaluated on the KITTIdriving scene dataset, and we demonstrate the performanceimprovement in the pose estimation of multi-object in 3D space.

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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