Gait benchmarks empower the research community to train and evaluate high-performance gait recognition systems. Even though growing efforts have been devoted to cross-view recognition, academia is restricted by current existing databases captured in the controlled environment. In this paper, we contribute a new benchmark for Gait REcognition in the Wild (GREW). The GREW dataset is constructed from natural videos, which contains hundreds of cameras and thousands of hours streams in open systems. With tremendous manual annotations, the GREW consists of 26K identities and 128K sequences with rich attributes for unconstrained gait recognition. Moreover, we add a distractor set of over 233K sequences, making it more suitable for real-world applications. Compared with prevailing predefined cross-view datasets, the GREW has diverse and practical view variations, as well as more natural challenging factors. To the best of our knowledge, this is the first large-scale dataset for gait recognition in the wild. Equipped with this benchmark, we dissect the unconstrained gait recognition problem. Representative appearance-based and model-based methods are explored, and comprehensive baselines are established. Experimental results show (1) The proposed GREW benchmark is necessary for training and evaluating gait recognizer in the wild. (2) For state-of-the-art gait recognition approaches, there is a lot of room for improvement. (3) The GREW benchmark can be used as effective pre-training for controlled gait recognition. Benchmark website is https://www.grew-benchmark.org/.
翻译:Gait基准使研究界能够培训和评价高性能动作识别系统。尽管在交叉视图识别方面已作出越来越多的努力,但学术界受到在受控制环境中捕获的现有数据库的限制。在本文中,我们为野生的Gait recognition提供了一个新的基准。GROW数据集是用天然视频构建的,包含数百个相机和开放系统中数千小时流。有了巨大的手工说明,GROEW由26K身份和128K序列组成,具有丰富特性,可以不受限制的游戏识别。此外,我们增加了一套超过233K序列的分流器,使之更适合现实世界应用。与普遍的预先定义交叉视图数据集相比,GROEW具有多样化和实用的视角变化,以及更自然的挑战性因素。据我们所知,这是在野生系统中识别的第一个大型数据集。根据这一基准,我们分解了未受限制的游戏识别问题。基于代表外观和基于模型的系列方法正在探索,并且已经为现实世界应用而更适合现实世界应用。GROEW系统与全面基线相比,GLEW有不同的视角变量变量变量变量变量变量变量差异评估。拟议基准评估基准。测试结果为基准评估。测试结果,用于基准评估。基准评估基准评估。基准评估。基准评估。基准评估。试验结果,为基准是用于基准评估。基准评估基准评估。基准评估。基准评估。试验结果,为基准评估。