arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2207.02206cs.CV
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基于对象中心分层表示的运动对象分割

Segmenting Moving Objects via an Object-Centric Layered Representation

University of Oxford(牛津大学);Shanghai Jiao Tong University(上海交通大学)

Junyu Xie, Weidi Xie, Andrew Zisserman

摘要:

本文的目标是一个模型,能够发现,跟踪和分割视频中的多个运动对象。我们做了四个贡献:首先,我们引入了一个以对象为中心的分割模型与深度排序层表示。这是使用摄取光流的Transformer架构的变体来实现的,其中每个查询向量为整个视频指定一个对象及其层。该模型可以有效地发现多个运动对象并处理相互遮挡;其次,我们引入了一个可扩展的管道,用于通过层组合生成多对象合成训练数据,用于训练所提出的模型,显着减少了劳动密集型注释的要求,并支持Sim 2 Real泛化;第三,我们进行了彻底的消融研究,表明该模型能够学习对象持久性和时间形状一致性,并能够预测非模态分割掩模;第四,我们评估我们的模型,只在合成数据上训练,在标准视频分割基准,DAVIS,MoCA,SegTrack,FBMS-59上,并在不依赖任何手动注释的现有方法中实现最先进的性能。通过测试时自适应,我们观察到进一步的性能提升。

英文摘要:

The objective of this paper is a model that is able to discover, track and segment multiple moving objects in a video. We make four contributions: First, we introduce an object-centric segmentation model with a depth-ordered layer representation. This is implemented using a variant of the transformer architecture that ingests optical flow, where each query vector specifies an object and its layer for the entire video. The model can effectively discover multiple moving objects and handle mutual occlusions; Second, we introduce a scalable pipeline for generating multi-object synthetic training data via layer compositions, that is used to train the proposed model, significantly reducing the requirements for labour-intensive annotations, and supporting Sim2Real generalisation; Third, we conduct thorough ablation studies, showing that the model is able to learn object permanence and temporal shape consistency, and is able to predict amodal segmentation masks; Fourth, we evaluate our model, trained only on synthetic data, on standard video segmentation benchmarks, DAVIS, MoCA, SegTrack, FBMS-59, and achieve state-of-the-art performance among existing methods that do not rely on any manual annotations. With test-time adaptation, we observe further performance boosts.

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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