在过去的几年中，基于卷积的神经网络（CNN）的人群计数方法已取得了有希望的结果。但是，对于准确的计数估计，量表变化问题仍然是一个巨大的挑战。在本文中，我们提出了一个多尺度特征聚合网络（MSFANET），可以在某种程度上减轻此问题。具体而言，我们的方法由两个特征聚合模块组成：短聚合（Shortagg）和Skip Contregation（Skipagg）。 Shortagg模块聚集了相邻卷积块的特征。其目的是制作具有从网络底部逐渐融合的不同接收场的功能。 Skipagg模块将具有小型接受场的特征直接传播到具有更大接收场的特征。它的目的是促进特征与大小接收场的融合。尤其是，Skipagg模块引入了Swin Transformer块中的本地自我注意力特征，以结合丰富的空间信息。此外，我们通过考虑不均匀的人群分布来提出基于局部和全球的计数损失。在四个具有挑战性的数据集（Shanghaitech数据集，UCF_CC_50数据集，UCF-QNRF数据集，WorldExpo'10数据集）上进行了广泛的实验，这表明与先前的先前的尚未实行的方法相比，提出的易于实现的MSFANET可以实现有希望的结果。

Recent CLIP-guided 3D optimization methods, e.g., DreamFields and PureCLIPNeRF achieve great success in zero-shot text-guided 3D synthesis. However, due to the scratch training and random initialization without any prior knowledge, these methods usually fail to generate accurate and faithful 3D structures that conform to the corresponding text. In this paper, we make the first attempt to introduce the explicit 3D shape prior to CLIP-guided 3D optimization methods. Specifically, we first generate a high-quality 3D shape from input texts in the text-to-shape stage as the 3D shape prior. We then utilize it as the initialization of a neural radiance field and then optimize it with the full prompt. For the text-to-shape generation, we present a simple yet effective approach that directly bridges the text and image modalities with a powerful text-to-image diffusion model. To narrow the style domain gap between images synthesized by the text-to-image model and shape renderings used to train the image-to-shape generator, we further propose to jointly optimize a learnable text prompt and fine-tune the text-to-image diffusion model for rendering-style image generation. Our method, namely, Dream3D, is capable of generating imaginative 3D content with better visual quality and shape accuracy than state-of-the-art methods.

变压器在许多视觉任务上表现出优选的性能。然而，对于人的任务重新识别（Reid），Vanilla变形金刚将丰富的背景留下了高阶特征关系，这是由于行人的戏剧性变化而不足的局部特征细节。在这项工作中，我们提出了一个全部关系高阶变压器（OH-Figrain）来模拟Reid的全系关系功能。首先，为了加强视觉表示的能力，而不是基于每个空间位置的对查询和隔离键获得注意矩阵，我们进一步逐步以模拟非本地机制的高阶统计信息。我们以先前的混合机制在每个订单的相应层中共享注意力，以降低计算成本。然后，提出了一种基于卷积的本地关系感知模块来提取本地关系和2D位置信息。我们模型的实验结果是优越的有前途，其在市场上显示出最先进的性能-1501，Dukemtmc，MSMT17和occluded-Duke数据集。

变压器在自然语言处理中的成功最近引起了计算机视觉领域的关注。由于能够学习长期依赖性，变压器已被用作广泛使用的卷积运算符的替代品。事实证明，这种替代者在许多任务中都取得了成功，其中几种最先进的方法依靠变压器来更好地学习。在计算机视觉中，3D字段还见证了使用变压器来增加3D卷积神经网络和多层感知器网络的增加。尽管许多调查都集中在视力中的变压器上，但由于与2D视觉相比，由于数据表示和处理的差异，3D视觉需要特别注意。在这项工作中，我们介绍了针对不同3D视觉任务的100多种变压器方法的系统和彻底审查，包括分类，细分，检测，完成，姿势估计等。我们在3D Vision中讨论了变形金刚的设计，该设计使其可以使用各种3D表示形式处理数据。对于每个应用程序，我们强调了基于变压器的方法的关键属性和贡献。为了评估这些方法的竞争力，我们将它们的性能与12个3D基准测试的常见非转化方法进行了比较。我们通过讨论3D视觉中变压器的不同开放方向和挑战来结束调查。除了提出的论文外，我们的目标是频繁更新最新的相关论文及其相应的实现：https：//github.com/lahoud/3d-vision-transformers。

多个对象跟踪（MOT）是包含检测和关联的任务。大量追踪器已经取得了竞争性能。不幸的是，由于缺乏这些子任务的信息交流，它们通常会偏向两者之一，并且在复杂的情况下，例如预期的虚假负面因素和彼此通过时的目标轨迹错误。在本文中，我们提出了Transfiner，这是一种基于变压器的MOT进行后填充方法。这是一个通用的附件框架，从原始跟踪器作为输入来利用图像和跟踪结果（位置和类预测）作为输入，然后将其用于强大地启动转机精矿。此外，推高器取决于查询对，这些查询对通过融合解码器产生了一对检测和运动，并实现了全面的跟踪改进。我们还通过根据不同的细化水平标记查询对来提供有针对性的改进。实验表明，在MOT17基准测试上，我们的设计是有效的，我们将CenterTrack从67.8％的MOTA和64.7％的IDF1提升到71.5％MOTA和66.8％IDF1。

快速的基于立体声的3D对象探测器最近在推理时间感到很大进展。然而，它们的精确度远远落后于高精度的方法。我们认为主要原因是快速立体声方法中缺失或差的3D几何特征表示。为了解决这个问题，我们提出了一个有效的几何特征生成网络（EGFN）。我们的EGFN的关键是一种有效且有效的3D几何特征表示（EGFR）模块。在EGFR模块中，首先生成轻量级成本体积特征，然后将其有效地转换为3D空间，并且最后进行图像和3D空间中的多尺度特征，以获得3D几何特征：增强的轻量级voxel特色。此外，我们介绍了一种新的多尺度知识蒸馏策略，以指导多尺度3D几何特征学习。公共基准测试集的实验结果表明，建议的EGFN优于Yolostsereo3D，先进的快速方法，在Map $ 5.16 \％上的$ _ {3d} $以仅需12毫秒的成本，因此实现了更好的权衡立体声3D对象检测的准确性和效率。我们的代码将公开提供。

In contrast to the control-theoretic methods, the lack of stability guarantee remains a significant problem for model-free reinforcement learning (RL) methods. Jointly learning a policy and a Lyapunov function has recently become a promising approach to ensuring the whole system with a stability guarantee. However, the classical Lyapunov constraints researchers introduced cannot stabilize the system during the sampling-based optimization. Therefore, we propose the Adaptive Stability Certification (ASC), making the system reach sampling-based stability. Because the ASC condition can search for the optimal policy heuristically, we design the Adaptive Lyapunov-based Actor-Critic (ALAC) algorithm based on the ASC condition. Meanwhile, our algorithm avoids the optimization problem that a variety of constraints are coupled into the objective in current approaches. When evaluated on ten robotic tasks, our method achieves lower accumulated cost and fewer stability constraint violations than previous studies.

A storyboard is a roadmap for video creation which consists of shot-by-shot images to visualize key plots in a text synopsis. Creating video storyboards however remains challenging which not only requires association between high-level texts and images, but also demands for long-term reasoning to make transitions smooth across shots. In this paper, we propose a new task called Text synopsis to Video Storyboard (TeViS) which aims to retrieve an ordered sequence of images to visualize the text synopsis. We construct a MovieNet-TeViS benchmark based on the public MovieNet dataset. It contains 10K text synopses each paired with keyframes that are manually selected from corresponding movies by considering both relevance and cinematic coherence. We also present an encoder-decoder baseline for the task. The model uses a pretrained vision-and-language model to improve high-level text-image matching. To improve coherence in long-term shots, we further propose to pre-train the decoder on large-scale movie frames without text. Experimental results demonstrate that our proposed model significantly outperforms other models to create text-relevant and coherent storyboards. Nevertheless, there is still a large gap compared to human performance suggesting room for promising future work.

Marine waves significantly disturb the unmanned surface vehicle (USV) motion. An unmanned aerial vehicle (UAV) can hardly land on a USV that undergoes irregular motion. An oversized landing platform is usually necessary to guarantee the landing safety, which limits the number of UAVs that can be carried. We propose a landing system assisted by tether and robot manipulation. The system can land multiple UAVs without increasing the USV's size. An MPC controller stabilizes the end-effector and tracks the UAVs, and an adaptive estimator addresses the disturbance caused by the base motion. The working strategy of the system is designed to plan the motion of each device. We have validated the manipulator controller through simulations and well-controlled indoor experiments. During the field tests, the proposed system caught and placed the UAVs when the disturbed USV roll range was approximately 12 degrees.

A computational graph in a deep neural network (DNN) denotes a specific data flow diagram (DFD) composed of many tensors and operators. Existing toolkits for visualizing computational graphs are not applicable when the structure is highly complicated and large-scale (e.g., BERT [1]). To address this problem, we propose leveraging a suite of visual simplification techniques, including a cycle-removing method, a module-based edge-pruning algorithm, and an isomorphic subgraph stacking strategy. We design and implement an interactive visualization system that is suitable for computational graphs with up to 10 thousand elements. Experimental results and usage scenarios demonstrate that our tool reduces 60% elements on average and hence enhances the performance for recognizing and diagnosing DNN models. Our contributions are integrated into an open-source DNN visualization toolkit, namely, MindInsight [2].