arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1803.01577cs.CVcs.RO
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基于模型的摄像机位姿估计中的视野外特征点预测

Predicting Out-of-View Feature Points for Model-Based Camera Pose Estimation

University of Bristol(布里斯托大学)

Oliver Moolan-Feroze, Andrew Calway

摘要:

在这项工作中,我们提出了一个新的框架,使用深度学习来预测输入图像中的视野外的对象特征点。该系统的开发考虑到了基于模型的跟踪应用,特别是在自主检查机器人的情况下,只有部分的对象的视图是可用的。通过在网络训练期间对特征点标签应用缩放来启用视图外预测。这与递归神经网络架构相结合,旨在为最终预测层提供来自输入图像空间范围的丰富特征信息。为了展示这些视野外预测的多功能性,我们描述了如何将它们集成到粒子滤波跟踪器和基于优化的跟踪器中。为了评估我们的工作,我们将我们的框架与仅预测图像内部点的框架进行了比较。我们表明,随着视野中的对象数量的减少,能够预测图像边界之外的鲁棒性增加了最终的姿态估计。

英文摘要:

In this work we present a novel framework that uses deep learning to predict object feature points that are out-of-view in the input image. This system was developed with the application of model-based tracking in mind, particularly in the case of autonomous inspection robots, where only partial views of the object are available. Out-of-view prediction is enabled by applying scaling to the feature point labels during network training. This is combined with a recurrent neural network architecture designed to provide the final prediction layers with rich feature information from across the spatial extent of the input image. To show the versatility of these out-of-view predictions, we describe how to integrate them in both a particle filter tracker and an optimisation based tracker. To evaluate our work we compared our framework with one that predicts only points inside the image. We show that as the amount of the object in view decreases, being able to predict outside the image bounds adds robustness to the final pose estimation.

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