电容感应是一种突出的技术,与现有的传感系统相比,具有快速识别速度的经济效益和低功耗。由于这些优点,在​​触摸感测,定位,存在检测和接触感应界面应用的域中被广泛研究和商业化了电容感测,例如人机交互。然而,由于非接触式接近感测方案容易受外围物体或周围环境的干扰影响,因此需要相当大的敏感数据处理,而不是接触感测,限制了其进一步利用的使用。在本文中,我们通过处理原始信号来提出基于非接触式手势手势识别的实时界面控制框架,检测使用自适应阈值的电容传感器附近的手势移动触发的电场干扰,并提取显着信号帧,覆盖具有98.8%的检测率和98.4%的帧校正率的真实信号间隔。通过用提取的信号框架培训的GRU模型,我们将10个手动手势类型分类为98.79%的精度。该框架根据输入传输分类结果并操纵前景过程的接口。本研究表明,直观接口技术的可行性,其适应自然用户界面的人机与机器相似的灵活相互作用,并基于通过非接触式传感测量电场干扰来提升商业化的可能性,这是最新的 - 艺术传感技术。
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当地客户的非IID数据集和异构环境被认为是联邦学习(FL)的一个主要问题,导致收敛性低迷而不会实现令人满意的性能。在本文中,我们提出了一种新颖的标签 - 方面聚类算法,可以通过选择与数据集接近的本地模型来保证地理位置分散的异构本地客户端之间的培训性能够近似于均匀分布式的类标签,这可能获得更快的最小化最小化损失并增加了流网络中的准确性。通过对建议的六种共同的非IID情景进行实验,经验证明,Vanilla FL聚合模型无法获得强大的收敛,产生偏置预先训练的本地模型,并漂移局部权重以误导最坏情况下的培训性。此外,我们在训练前定量估计本地模型的预期性能,它提供全球服务器,用于选择最佳客户,节省额外的计算成本。最终,为了在这种非IID情况下定位非收敛性,我们基于本地输入类标签设计集群算法,适应可能导致整体系统实现SWIFT融合作为全球培训的多样性和什锦客户继续。我们的论文显示,当本地训练数据集是非IID的非IID时,拟议的标签 - 明智的聚类与其他FL算法相比,与其他FL算法相比,表现出了提示和强大的融合。
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建筑摄影是一种摄影类型,重点是捕获前景中带有戏剧性照明的建筑物或结构。受图像到图像翻译方法的成功启发,我们旨在为建筑照片执行风格转移。但是,建筑摄影中的特殊构图对这类照片中的样式转移构成了巨大挑战。现有的神经风格转移方法将建筑图像视为单个实体,它将产生与原始建筑的几何特征,产生不切实际的照明,错误的颜色演绎以及可视化伪影,例如幽灵,外观失真或颜色不匹配。在本文中,我们专门针对建筑摄影的神经风格转移方法。我们的方法解决了两个分支神经网络中建筑照片中前景和背景的组成,该神经网络分别考虑了前景和背景的样式转移。我们的方法包括一个分割模块,基于学习的图像到图像翻译模块和图像混合优化模块。我们使用了一天中不同的魔术时代捕获的不受限制的户外建筑照片的新数据集培训了图像到图像的翻译神经网络,利用其他语义信息,以更好地匹配和几何形状保存。我们的实验表明,我们的方法可以在前景和背景上产生逼真的照明和颜色演绎,并且在定量和定性上都优于一般图像到图像转换和任意样式转移基线。我们的代码和数据可在https://github.com/hkust-vgd/architectural_style_transfer上获得。
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神经辐射场(NERF)最近在新型视图合成中取得了令人印象深刻的结果。但是,以前的NERF作品主要关注以对象为中心的方案。在这项工作中,我们提出了360ROAM,这是一种新颖的场景级NERF系统,可以实时合成大型室内场景的图像并支持VR漫游。我们的系统首先从多个输入$ 360^\ circ $图像构建全向神经辐射场360NERF。然后,我们逐步估算一个3D概率的占用图,该概率占用图代表了空间密度形式的场景几何形状。跳过空的空间和上采样占据的体素本质上可以使我们通过以几何学意识的方式使用360NERF加速量渲染。此外,我们使用自适应划分和扭曲策略来减少和调整辐射场,以进一步改进。从占用地图中提取的场景的平面图可以为射线采样提供指导,并促进现实的漫游体验。为了显示我们系统的功效,我们在各种场景中收集了$ 360^\ Circ $图像数据集并进行广泛的实验。基线之间的定量和定性比较说明了我们在复杂室内场景的新型视图合成中的主要表现。
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提供和渲染室内场景一直是室内设计的一项长期任务,艺术家为空间创建概念设计,建立3D模型的空间,装饰,然后执行渲染。尽管任务很重要,但它很乏味,需要巨大的努力。在本文中,我们引入了一个特定领域的室内场景图像合成的新问题,即神经场景装饰。鉴于一张空的室内空间的照片以及用户确定的布局列表,我们旨在合成具有所需的家具和装饰的相同空间的新图像。神经场景装饰可用于以简单而有效的方式创建概念室内设计。我们解决这个研究问题的尝试是一种新颖的场景生成体系结构,它将空的场景和对象布局转化为现实的场景照片。我们通过将其与有条件图像合成基线进行比较,以定性和定量的方式将其进行比较,证明了我们提出的方法的性能。我们进行广泛的实验,以进一步验证我们生成的场景的合理性和美学。我们的实现可在\ url {https://github.com/hkust-vgd/neural_scene_decoration}获得。
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In this paper, we propose a robust 3D detector, named Cross Modal Transformer (CMT), for end-to-end 3D multi-modal detection. Without explicit view transformation, CMT takes the image and point clouds tokens as inputs and directly outputs accurate 3D bounding boxes. The spatial alignment of multi-modal tokens is performed implicitly, by encoding the 3D points into multi-modal features. The core design of CMT is quite simple while its performance is impressive. CMT obtains 73.0% NDS on nuScenes benchmark. Moreover, CMT has a strong robustness even if the LiDAR is missing. Code will be released at https://github.com/junjie18/CMT.
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Dataset distillation has emerged as a prominent technique to improve data efficiency when training machine learning models. It encapsulates the knowledge from a large dataset into a smaller synthetic dataset. A model trained on this smaller distilled dataset can attain comparable performance to a model trained on the original training dataset. However, the existing dataset distillation techniques mainly aim at achieving the best trade-off between resource usage efficiency and model utility. The security risks stemming from them have not been explored. This study performs the first backdoor attack against the models trained on the data distilled by dataset distillation models in the image domain. Concretely, we inject triggers into the synthetic data during the distillation procedure rather than during the model training stage, where all previous attacks are performed. We propose two types of backdoor attacks, namely NAIVEATTACK and DOORPING. NAIVEATTACK simply adds triggers to the raw data at the initial distillation phase, while DOORPING iteratively updates the triggers during the entire distillation procedure. We conduct extensive evaluations on multiple datasets, architectures, and dataset distillation techniques. Empirical evaluation shows that NAIVEATTACK achieves decent attack success rate (ASR) scores in some cases, while DOORPING reaches higher ASR scores (close to 1.0) in all cases. Furthermore, we conduct a comprehensive ablation study to analyze the factors that may affect the attack performance. Finally, we evaluate multiple defense mechanisms against our backdoor attacks and show that our attacks can practically circumvent these defense mechanisms.
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Automatic music generation with artificial intelligence typically requires a large amount of data which is hard to obtain for many less common genres and musical instruments. To tackle this issue, we present ongoing work and preliminary findings on the possibility for deep models to transfer knowledge from language to music, by finetuning large language models pre-trained on a massive text corpus on only hundreds of MIDI files of drum performances. We show that by doing so, one of the largest, state-of-the-art models (GPT3) is capable of generating reasonable drum grooves, while models that are not pre-trained (Transformer) shows no such ability beyond naive repetition. Evaluating generated music is a challenging task, more so is evaluating drum grooves with little precedence in literature. Hence, we propose a tailored structural evaluation method and analyze drum grooves produced by GPT3 compared to those played by human professionals, exposing the strengths and weaknesses of such generation by language-to-music transfer. Our findings suggest that language-to-music transfer learning with large language models is viable and promising.
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Few Shot Instance Segmentation (FSIS) requires models to detect and segment novel classes with limited several support examples. In this work, we explore a simple yet unified solution for FSIS as well as its incremental variants, and introduce a new framework named Reference Twice (RefT) to fully explore the relationship between support/query features based on a Transformer-like framework. Our key insights are two folds: Firstly, with the aid of support masks, we can generate dynamic class centers more appropriately to re-weight query features. Secondly, we find that support object queries have already encoded key factors after base training. In this way, the query features can be enhanced twice from two aspects, i.e., feature-level and instance-level. In particular, we firstly design a mask-based dynamic weighting module to enhance support features and then propose to link object queries for better calibration via cross-attention. After the above steps, the novel classes can be improved significantly over our strong baseline. Additionally, our new framework can be easily extended to incremental FSIS with minor modification. When benchmarking results on the COCO dataset for FSIS, gFSIS, and iFSIS settings, our method achieves a competitive performance compared to existing approaches across different shots, e.g., we boost nAP by noticeable +8.2/+9.4 over the current state-of-the-art FSIS method for 10/30-shot. We further demonstrate the superiority of our approach on Few Shot Object Detection. Code and model will be available.
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Graph Neural Networks (GNNs) have shown satisfying performance on various graph learning tasks. To achieve better fitting capability, most GNNs are with a large number of parameters, which makes these GNNs computationally expensive. Therefore, it is difficult to deploy them onto edge devices with scarce computational resources, e.g., mobile phones and wearable smart devices. Knowledge Distillation (KD) is a common solution to compress GNNs, where a light-weighted model (i.e., the student model) is encouraged to mimic the behavior of a computationally expensive GNN (i.e., the teacher GNN model). Nevertheless, most existing GNN-based KD methods lack fairness consideration. As a consequence, the student model usually inherits and even exaggerates the bias from the teacher GNN. To handle such a problem, we take initial steps towards fair knowledge distillation for GNNs. Specifically, we first formulate a novel problem of fair knowledge distillation for GNN-based teacher-student frameworks. Then we propose a principled framework named RELIANT to mitigate the bias exhibited by the student model. Notably, the design of RELIANT is decoupled from any specific teacher and student model structures, and thus can be easily adapted to various GNN-based KD frameworks. We perform extensive experiments on multiple real-world datasets, which corroborates that RELIANT achieves less biased GNN knowledge distillation while maintaining high prediction utility.
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