长期以来，将物体检测推向开放量和几乎没有射击转移一直是计算机视觉研究的挑战。这项工作探讨了一种持续的学习方法，该方法使探测器能够通过多数据远见语言的预训练扩展其零/少量功能。我们使用自然语言作为知识表示，我们探讨了从不同培训数据集积累“视觉词汇”的方法，并将任务统一为语言条件的检测框架。具体而言，我们提出了一种新颖的语言感知探测器OMDET和一种新颖的培训机制。拟议的多模式检测网络可以解决多数据库联合培训中的技术挑战，并且可以推广到任意数量的培训数据集，而无需手动标签分类合并的要求。与单独训练相比，Coco，Pascal VOC和更宽的面部/行人的实验结果通过在关节训练中或更高的分数来证实了疗效。此外，我们对超过400万个独特的对象词汇进行了预先培训，并在ODINW的35个下游任务上评估了所得模型。结果表明，OMDET能够在ODINW上实现最新的微调性能。分析表明，通过扩展提出的预训练方法，OMDET继续改善其零/少量调整性能，这表明了进一步扩展的有希望的方法。

视觉预读（VLP）模型最近成功地促进了许多跨模式下游任务。大多数现有作品通过比较微调的下游任务性能来评估其系统。但是，只有平均下游任务准确性才能提供有关每种VLP方法的优缺点的几乎没有信息，更不用说有关社区如何改善系统的见解。受清单进行自然语言处理的启发，我们引入了VL-CheckList，这是一个新颖的框架，以了解VLP模型的功能。所提出的方法将VLP模型的图像定位能力分为三类：对象，属性和关系，并使用新颖的分类法进一步分解这三个方面。我们进行了全面的研究，通过提出的框架分析了七个最近流行的VLP模型。结果通过揭示了仅在下游任务评估中看不见的模型之间的细粒度差异来证实所提出的方法的有效性。进一步的结果表明，在构建更好的VLP模型方面有希望的研究方向。数据和代码：https：//github.com/om--ai-lab/vl-checklist

当一个代理与多代理环境互动时，与以前看不见的各种对手打交道是一项挑战。建模对手的行为，目标或信念可以帮助代理人调整其政策以适应不同的对手。此外，考虑同时学习或能够推理的对手也很重要。但是，现有工作通常仅处理上述对手类型之一。在本文中，我们提出了基于模型的对手建模（MBOM）​​，该模型采用环境模型来适应各种对手。 MBOM在环境模型中模拟了递归推理过程，并想象一组改进对手政策。为了有效，准确地代表对手政策，MBOM根据与对手的真实行为的相似性进一步将想象中的对手政策混合在一起。从经验上讲，我们表明，MBOM比在各种任务中的现有方法更有效地适应，分别具有不同类型的对手，即固定的政策，NA \“ IVE”学习者和推理者。

本文回顾了关于压缩视频质量增强质量的第一个NTIRE挑战，重点是拟议的方法和结果。在此挑战中，采用了新的大型不同视频（LDV）数据集。挑战有三个曲目。Track 1和2的目标是增强HEVC在固定QP上压缩的视频，而Track 3旨在增强X265压缩的视频，以固定的位速率压缩。此外，轨道1和3的质量提高了提高保真度（PSNR）的目标，以及提高感知质量的2个目标。这三个曲目完全吸引了482个注册。在测试阶段，分别提交了12个团队，8支球队和11支球队，分别提交了轨道1、2和3的最终结果。拟议的方法和解决方案衡量视频质量增强的最先进。挑战的首页：https：//github.com/renyang-home/ntire21_venh

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.

Pedestrian detection in the wild remains a challenging problem especially for scenes containing serious occlusion. In this paper, we propose a novel feature learning method in the deep learning framework, referred to as Feature Calibration Network (FC-Net), to adaptively detect pedestrians under various occlusions. FC-Net is based on the observation that the visible parts of pedestrians are selective and decisive for detection, and is implemented as a self-paced feature learning framework with a self-activation (SA) module and a feature calibration (FC) module. In a new self-activated manner, FC-Net learns features which highlight the visible parts and suppress the occluded parts of pedestrians. The SA module estimates pedestrian activation maps by reusing classifier weights, without any additional parameter involved, therefore resulting in an extremely parsimony model to reinforce the semantics of features, while the FC module calibrates the convolutional features for adaptive pedestrian representation in both pixel-wise and region-based ways. Experiments on CityPersons and Caltech datasets demonstrate that FC-Net improves detection performance on occluded pedestrians up to 10% while maintaining excellent performance on non-occluded instances.

Event cameras, offering high temporal resolutions and high dynamic ranges, have brought a new perspective to address common challenges (e.g., motion blur and low light) in monocular depth estimation. However, how to effectively exploit the sparse spatial information and rich temporal cues from asynchronous events remains a challenging endeavor. To this end, we propose a novel event-based monocular depth estimator with recurrent transformers, namely EReFormer, which is the first pure transformer with a recursive mechanism to process continuous event streams. Technically, for spatial modeling, a novel transformer-based encoder-decoder with a spatial transformer fusion module is presented, having better global context information modeling capabilities than CNN-based methods. For temporal modeling, we design a gate recurrent vision transformer unit that introduces a recursive mechanism into transformers, improving temporal modeling capabilities while alleviating the expensive GPU memory cost. The experimental results show that our EReFormer outperforms state-of-the-art methods by a margin on both synthetic and real-world datasets. We hope that our work will attract further research to develop stunning transformers in the event-based vision community. Our open-source code can be found in the supplemental material.

This paper presents an approach that reconstructs a hand-held object from a monocular video. In contrast to many recent methods that directly predict object geometry by a trained network, the proposed approach does not require any learned prior about the object and is able to recover more accurate and detailed object geometry. The key idea is that the hand motion naturally provides multiple views of the object and the motion can be reliably estimated by a hand pose tracker. Then, the object geometry can be recovered by solving a multi-view reconstruction problem. We devise an implicit neural representation-based method to solve the reconstruction problem and address the issues of imprecise hand pose estimation, relative hand-object motion, and insufficient geometry optimization for small objects. We also provide a newly collected dataset with 3D ground truth to validate the proposed approach.

This paper focuses on the prevalent performance imbalance in the stages of incremental learning. To avoid obvious stage learning bottlenecks, we propose a brand-new stage-isolation based incremental learning framework, which leverages a series of stage-isolated classifiers to perform the learning task of each stage without the interference of others. To be concrete, to aggregate multiple stage classifiers as a uniform one impartially, we first introduce a temperature-controlled energy metric for indicating the confidence score levels of the stage classifiers. We then propose an anchor-based energy self-normalization strategy to ensure the stage classifiers work at the same energy level. Finally, we design a voting-based inference augmentation strategy for robust inference. The proposed method is rehearsal free and can work for almost all continual learning scenarios. We evaluate the proposed method on four large benchmarks. Extensive results demonstrate the superiority of the proposed method in setting up new state-of-the-art overall performance. \emph{Code is available at} \url{https://github.com/iamwangyabin/ESN}.

玻璃在我们的日常生活中非常普遍。现有的计算机视觉系统忽略了它，因此可能会产生严重的后果，例如，机器人可能会坠入玻璃墙。但是，感知玻璃的存在并不简单。关键的挑战是，任意物体/场景可以出现在玻璃后面。在本文中，我们提出了一个重要的问题，即从单个RGB图像中检测玻璃表面。为了解决这个问题，我们构建了第一个大规模玻璃检测数据集（GDD），并提出了一个名为GDNet-B的新颖玻璃检测网络，该网络通过新颖的大型场探索大型视野中的丰富上下文提示上下文特征集成（LCFI）模块并将高级和低级边界特征与边界特征增强（BFE）模块集成在一起。广泛的实验表明，我们的GDNET-B可以在GDD测试集内外的图像上达到满足玻璃检测结果。我们通过将其应用于其他视觉任务（包括镜像分割和显着对象检测）来进一步验证我们提出的GDNET-B的有效性和概括能力。最后，我们显示了玻璃检测的潜在应用，并讨论了可能的未来研究方向。