被遮挡的人重新识别（RE-ID）旨在解决跨多个摄像机感兴趣的人时解决遮挡问题。随着深度学习技术的促进和对智能视频监视的需求的不断增长，现实世界应用中的频繁闭塞使闭塞的人重新引起了研究人员的极大兴趣。已经提出了大量封闭的人重新ID方法，而很少有针对遮挡的调查。为了填补这一空白并有助于提高未来的研究，本文提供了对封闭者重新ID的系统调查。通过对人体闭塞的深入分析，发现大多数现有方法仅考虑一部分闭塞问题。因此，我们从问题和解决方案的角度回顾了与闭塞相关的人重新ID方法。我们总结了个人重新闭塞引起的四个问题，即位置错位，规模错位，嘈杂的信息和缺失的信息。然后对解决不同问题的闭塞相关方法进行分类和引入。之后，我们总结并比较了四个流行数据集上最近被遮挡的人重新ID方法的性能：部分reid，部分易边，咬合 - 固定和遮挡的dukemtmc。最后，我们提供了有关有希望的未来研究方向的见解。

步态识别在预防犯罪和社会保障方面起了重要作用，因为它可以在不合作的情况下以远距离进行。但是，现有的数据集和方法无法有效地处理实际步态识别中最具挑战性的问题：穿着不同的衣服行走（CL）。为了解决这个问题，我们提出了两个基准：CASIA-BN-RCC和OUMVLP-RCC，以模拟实践中的布换状态。这两个基准可以迫使该算法与两个子数据集实现交叉视图和交叉插入。此外，我们提出了一个新框架，可以使用现成的骨干进行应用，以在渐进式功能学习中改善其在逼真的换衣服问题中的性能。具体而言，在我们的框架中，我们设计了渐进式映射和渐进的不确定性，以提取交叉视图功能，然后根据基础提取交叉插入功能。通过这种方式，跨视图子数据库的特征首先可以主导特征空间，并缓解由跨夹子子数据库的不良效应引起的不均匀分布。基准上的实验表明，我们的框架可以有效地改善CL条件下的识别性能。接受后，我们的代码和数据集将在接受后发布。

步态描绘了个人独特而区别的步行模式，并已成为人类识别最有希望的生物识别特征之一。作为一项精细的识别任务，步态识别很容易受到许多因素的影响，并且通常需要大量完全注释的数据，这些数据是昂贵且无法满足的。本文提出了一个大规模的自我监督基准，以通过对比度学习进行步态识别，旨在通过提供信息丰富的步行先验和各种现实世界中的多样化的变化，从大型的无标记的步行视频中学习一般步态代表。具体而言，我们收集了一个由1.02m步行序列组成的大规模的无标记的步态数据集gaitu-1m，并提出了一个概念上简单而经验上强大的基线模型步态。在实验上，我们在四个广泛使用的步态基准（Casia-B，Ou-Mvlp，Grew and Grew and Gait3d）上评估了预训练的模型，或者在不转移学习的情况下。无监督的结果与基于早期模型和基于GEI的早期方法相当甚至更好。在转移学习后，我们的方法在大多数情况下都超过现有方法。从理论上讲，我们讨论了步态特异性对比框架的关键问题，并提供了一些进一步研究的见解。据我们所知，Gaitlu-1M是第一个大规模未标记的步态数据集，而GaitSSB是第一种在上述基准测试基准上取得显着无监督结果的方法。 GaitSSB的源代码将集成到OpenGait中，可在https://github.com/shiqiyu/opengait上获得。

步态是长距离识别个体的最有前途的生物识别技术之一。尽管大多数以前的方法都集中在识别轮廓上，但直接从RGB图像中提取步态特征的几种端到端方法表现更好。但是，我们证明了这些端到端方法可能不可避免地会遭受步态液化的噪音，即低级纹理和丰富多彩的信息。在实验上，我们设计了跨域评估以支持这种观点。在这项工作中，我们提出了一个名为Gaitedge的新颖端到端框架，该框架可以有效地阻止步态 - 近距离信息并发布端到端训练潜力。具体而言，Gaitede合成了行人分割网络的输出，然后将其馈送到随后的识别网络中，在该网络中，合成轮廓由身体的可训练边缘和固定内部室内装饰组成，以限制识别网络接收的信息。此外，对齐轮廓的步态嵌入了盖地，而不会失去不同的性能。关于CASIA-B和我们新建的TTG-200的实验结果表明，Gaitedge明显优于先前的方法，并提供了更实用的端到端范式。所有源代码均可在https://github.com/shiqiyu/opengait上获得。

In the field of cross-modal retrieval, single encoder models tend to perform better than dual encoder models, but they suffer from high latency and low throughput. In this paper, we present a dual encoder model called BagFormer that utilizes a cross modal interaction mechanism to improve recall performance without sacrificing latency and throughput. BagFormer achieves this through the use of bag-wise interactions, which allow for the transformation of text to a more appropriate granularity and the incorporation of entity knowledge into the model. Our experiments demonstrate that BagFormer is able to achieve results comparable to state-of-the-art single encoder models in cross-modal retrieval tasks, while also offering efficient training and inference with 20.72 times lower latency and 25.74 times higher throughput.

The past few years have witnessed the prevalence of self-supervised representation learning within the language and 2D vision communities. However, such advancements have not been fully migrated to the community of 3D point cloud learning. Different from previous pre-training pipelines for 3D point clouds that generally fall into the scope of either generative modeling or contrastive learning, in this paper, we investigate a translative pre-training paradigm, namely PointVST, driven by a novel self-supervised pretext task of cross-modal translation from an input 3D object point cloud to its diverse forms of 2D rendered images (e.g., silhouette, depth, contour). Specifically, we begin with deducing view-conditioned point-wise embeddings via the insertion of the viewpoint indicator, and then adaptively aggregate a view-specific global codeword, which is further fed into the subsequent 2D convolutional translation heads for image generation. We conduct extensive experiments on common task scenarios of 3D shape analysis, where our PointVST shows consistent and prominent performance superiority over current state-of-the-art methods under diverse evaluation protocols. Our code will be made publicly available.

This paper utilizes an anomaly detection algorithm to check if underwater gliders are operating normally in the unknown ocean environment. Glider pilots can be warned of the detected glider anomaly in real time, thus taking over the glider appropriately and avoiding further damage to the glider. The adopted algorithm is validated by two valuable sets of data in real glider deployments, the University of South Florida (USF) glider Stella and the Skidaway Institute of Oceanography (SkIO) glider Angus.

Blind watermarking provides powerful evidence for copyright protection, image authentication, and tampering identification. However, it remains a challenge to design a watermarking model with high imperceptibility and robustness against strong noise attacks. To resolve this issue, we present a framework Combining the Invertible and Non-invertible (CIN) mechanisms. The CIN is composed of the invertible part to achieve high imperceptibility and the non-invertible part to strengthen the robustness against strong noise attacks. For the invertible part, we develop a diffusion and extraction module (DEM) and a fusion and split module (FSM) to embed and extract watermarks symmetrically in an invertible way. For the non-invertible part, we introduce a non-invertible attention-based module (NIAM) and the noise-specific selection module (NSM) to solve the asymmetric extraction under a strong noise attack. Extensive experiments demonstrate that our framework outperforms the current state-of-the-art methods of imperceptibility and robustness significantly. Our framework can achieve an average of 99.99% accuracy and 67.66 dB PSNR under noise-free conditions, while 96.64% and 39.28 dB combined strong noise attacks. The code will be available in https://github.com/rmpku/CIN.

Our situated environment is full of uncertainty and highly dynamic, thus hindering the widespread adoption of machine-led Intelligent Decision-Making (IDM) in real world scenarios. This means IDM should have the capability of continuously learning new skills and efficiently generalizing across wider applications. IDM benefits from any new approaches and theoretical breakthroughs that exhibit Artificial General Intelligence (AGI) breaking the barriers between tasks and applications. Recent research has well-examined neural architecture, Transformer, as a backbone foundation model and its generalization to various tasks, including computer vision, natural language processing, and reinforcement learning. We therefore argue that a foundation decision model (FDM) can be established by formulating various decision-making tasks as a sequence decoding task using the Transformer architecture; this would be a promising solution to advance the applications of IDM in more complex real world tasks. In this paper, we elaborate on how a foundation decision model improves the efficiency and generalization of IDM. We also discuss potential applications of a FDM in multi-agent game AI, production scheduling, and robotics tasks. Finally, through a case study, we demonstrate our realization of the FDM, DigitalBrain (DB1) with 1.2 billion parameters, which achieves human-level performance over 453 tasks, including text generation, images caption, video games playing, robotic control, and traveling salesman problems. As a foundation decision model, DB1 would be a baby step towards more autonomous and efficient real world IDM applications.

Transformer-based models have been widely demonstrated to be successful in computer vision tasks by modelling long-range dependencies and capturing global representations. However, they are often dominated by features of large patterns leading to the loss of local details (e.g., boundaries and small objects), which are critical in medical image segmentation. To alleviate this problem, we propose a Dual-Aggregation Transformer Network called DuAT, which is characterized by two innovative designs, namely, the Global-to-Local Spatial Aggregation (GLSA) and Selective Boundary Aggregation (SBA) modules. The GLSA has the ability to aggregate and represent both global and local spatial features, which are beneficial for locating large and small objects, respectively. The SBA module is used to aggregate the boundary characteristic from low-level features and semantic information from high-level features for better preserving boundary details and locating the re-calibration objects. Extensive experiments in six benchmark datasets demonstrate that our proposed model outperforms state-of-the-art methods in the segmentation of skin lesion images, and polyps in colonoscopy images. In addition, our approach is more robust than existing methods in various challenging situations such as small object segmentation and ambiguous object boundaries.