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arXiv 2103.00262cs.CVcs.AIcs.GRcs.LG
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Walk2Map:从室内步行轨迹提取平面图

Walk2Map: Extracting Floor Plans from Indoor Walk Trajectories

University of Zurich(苏黎世大学);ETH Zürich(苏黎世联邦理工学院);University College London(伦敦大学学院);Adobe Research(奥多比研究中心)

Claudio Mura, Renato Pajarola, Konrad Schindler, Niloy Mitra

摘要:

近年来,用于有效管理室内空间的新数字产品激增,其重要应用包括应急管理、虚拟财产展示和室内设计。这些产品依赖于所考虑环境的精确3D模型,包括建筑和非永久性元素的信息。这些模型必须从测量数据(如RGB-D图像或3D点云)创建,其捕获和整合涉及冗长的数据工作流程。这极大地限制了3D模型的生成速度,阻碍了许多室内空间管理数字服务的采用。我们提供了一种替代这种数据密集型的程序,提出Walk 2 Map,一种数据驱动的方法来生成平面图,只从一个人走在房间内的轨迹。得益于数据驱动惯性里程计的最新进展,可以从消费级智能手机的IMU读数中获取这种极简的输入数据,这允许轻松且可扩展地映射真实世界的室内空间。我们的工作是基于学习室内步行轨迹和平面图中表示的信息之间的潜在关系:室内空间足迹,门户和家具。我们区分恢复区域相关(室内足迹,家具)和墙壁相关(门)的信息,并使用两种不同的神经架构的两个任务:基于图像的编码器-解码器和图卷积网络,分别。我们使用扫描的3D室内模型训练我们的网络,并在推理时将它们以级联方式应用于室内步行轨迹。我们使用模拟和测量的真实轨迹进行定性和定量评估,并与图像到图像转换的基线方法进行比较。实验证明了该方法的可行性。

英文摘要:

Recent years have seen a proliferation of new digital products for the efficient management of indoor spaces, with important applications like emergency management, virtual property showcasing and interior design. These products rely on accurate 3D models of the environments considered, including information on both architectural and non-permanent elements. These models must be created from measured data such as RGB-D images or 3D point clouds, whose capture and consolidation involves lengthy data workflows. This strongly limits the rate at which 3D models can be produced, preventing the adoption of many digital services for indoor space management. We provide an alternative to such data-intensive procedures by presenting Walk2Map, a data-driven approach to generate floor plans only from trajectories of a person walking inside the rooms. Thanks to recent advances in data-driven inertial odometry, such minimalistic input data can be acquired from the IMU readings of consumer-level smartphones, which allows for an effortless and scalable mapping of real-world indoor spaces. Our work is based on learning the latent relation between an indoor walk trajectory and the information represented in a floor plan: interior space footprint, portals, and furniture. We distinguish between recovering area-related (interior footprint, furniture) and wall-related (doors) information and use two different neural architectures for the two tasks: an image-based Encoder-Decoder and a Graph Convolutional Network, respectively. We train our networks using scanned 3D indoor models and apply them in a cascaded fashion on an indoor walk trajectory at inference time. We perform a qualitative and quantitative evaluation using both simulated and measured, real-world trajectories, and compare against a baseline method for image-to-image translation. The experiments confirm the feasibility of our approach.

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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