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3D Head Pose Estimation via Normal Maps: A Generalized Solution for Depth Image, Point Cloud, and Mesh 通过法线贴图估计 3D 头部姿势:深度图像、点云和网格的通用解决方案
IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-10-13 DOI: 10.1002/aisy.202400159
Jiang Wu, Hua Chen

Head pose estimation plays a crucial role in various applications, including human–machine interaction, autonomous driving systems, and 3D reconstruction. Current methods address the problem primarily from a 2D perspective, which limits the efficient utilization of 3D information. Herein, a novel approach, called pose orientation-aware network (POANet), which leverages normal maps for orientation information embedding, providing abundant and robust head pose information, is introduced. POANet incorporates the axial signal perception module and the rotation matrix perception module, these lightweight modules make the approach achieve state-of-the-art (SOTA) performance with few computational costs. This method can directly analyze various topological 3D data without extensive preprocessing. For depth images, POANet outperforms existing methods on the Biwi Kinect head pose dataset, reducing the mean absolute error (MAE) by ≈30% compared to the SOTA methods. POANet is the first method to perform rigid head registration in a landmark-free manner. It also incorporates few-shot learning capabilities and achieves an MAE of about 1°$1^{circ}$ on the Headspace dataset. These features make POANet a superior alternative to traditional generalized Procrustes analysis for mesh data processing, offering enhanced convenience for human phenotype studies.

头部姿态估计在人机交互、自动驾驶系统和三维重建等各种应用中发挥着至关重要的作用。目前的方法主要从二维角度解决这一问题,这限制了对三维信息的有效利用。本文介绍了一种名为 "姿态方位感知网络(POANet)"的新方法,它利用法线图进行方位信息嵌入,提供了丰富而稳健的头部姿态信息。POANet 包含轴向信号感知模块和旋转矩阵感知模块,这些轻量级模块使该方法以较低的计算成本实现了最先进的(SOTA)性能。这种方法可以直接分析各种拓扑三维数据,而无需进行大量预处理。对于深度图像,POANet 在 Biwi Kinect 头部姿态数据集上的表现优于现有方法,与 SOTA 方法相比,平均绝对误差(MAE)降低了≈30%。POANet 是第一种以无地标方式执行刚性头部配准的方法。它还结合了少量学习功能,并在 Headspace 数据集上实现了约 1 ° $1^{circ}$ 的 MAE。这些特点使 POANet 成为网格数据处理中传统广义 Procrustes 分析的优越替代方案,为人类表型研究提供了更大的便利。
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引用次数: 0
DeepSLM: Speckle-Licensed Modulation via Deep Adversarial Learning for Authorized Optical Encryption and Decryption DeepSLM:通过深度对抗学习进行斑点许可调制,实现授权光学加密和解密
IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-09-30 DOI: 10.1002/aisy.202400150
Haofan Huang, Qi Zhao, Huanhao Li, Yuandong Zheng, Zhipeng Yu, Tianting Zhong, Shengfu Cheng, Chi Man Woo, Yi Gao, Honglin Liu, Yuanjin Zheng, Jie Tian, Puxiang Lai

Optical encryption is pivotal in information security, offering parallel processing, speed, and robust security. The simplicity and compatibility of speckle-based cryptosystems have garnered considerable attention. Yet, the predictable statistical distribution of speckle optical fields’ characteristics can invite statistical attacks, undermining these encryption methods. The proposed solution, a deep adversarial learning-based speckle modulation network (DeepSLM), disrupts the strong intercorrelation of speckle grains. Utilizing the unique encoding properties of speckle patterns, DeepSLM facilitates license editing within the modulation phase, pioneering a layered authentication encryption system. Our empirical studies confirm DeepSLM's superior performance on key metrics. Notably, the testing dataset reveals an average Pearson correlation coefficient above 0.97 between decrypted images and their original counterparts for intricate subjects like human faces, attesting to the method's high fidelity. This innovation marries adjustable modification, optical encryption, and deep learning to enforce tiered data access control, charting new paths for creating user-specific access protocols.

光学加密在信息安全领域举足轻重,它提供并行处理、速度和强大的安全性。基于斑点的加密系统的简易性和兼容性引起了广泛关注。然而,斑点光场特征的可预测统计分布会招致统计攻击,从而破坏这些加密方法。我们提出的解决方案是基于深度对抗学习的斑点调制网络(DeepSLM),它能破坏斑点颗粒之间的强相互关系。利用斑点纹独特的编码特性,DeepSLM 可在调制阶段进行许可证编辑,开创了分层认证加密系统。我们的实证研究证实了 DeepSLM 在关键指标上的卓越性能。值得注意的是,测试数据集显示,对于人脸等复杂对象,解密图像与原始图像之间的平均皮尔逊相关系数超过 0.97,证明了该方法的高保真性。这项创新将可调整修改、光学加密和深度学习结合起来,实施分级数据访问控制,为创建用户特定访问协议开辟了新的道路。
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引用次数: 0
Evaluating Users’ Perception of Biologically Inspired Involuntary Behavior in Human–Robot Interaction 评估用户对人机交互中生物启发的非自愿行为的感知
IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-09-29 DOI: 10.1002/aisy.202400042
Marcos Maroto-Gómez, Enrique Fernández-Rodicio, Álvaro Castro-González, María Malfaz, Miguel Ángel Salichs

Multimodal communication is a human feature that enables diverse interactions. In human–robot interaction (HRI), robots have to communicate using human skills so that they can seem natural and assist effectively. Most research uses predefined gestures to equip robots with social abilities. However, researchers scarcely consider generating bioinspired involuntary behavior to improve a robot's expressiveness and communication. Human studies revealed that involuntary behavior affects how others perceive communicative intentions. Therefore, mimicking human involuntary behavior may positively affect HRI. This article extends our previous work on equipping robots with involuntary behavior with a user study that evaluates the use of bioinspiration for complementing gestures. A preliminary test is conducted with 15 participants to determine if they can perceive the intensities of the involuntary processes heart rate, pupil size, blink rate, breathing rate, and motor activity. 63 new participants interacted with a robot with bioinspired behaviors or a robot only showing predefined gestures to evaluate the robots’ warmth, competence, and discomfort. The results show that the preliminary test participants differentiated the intensities of the involuntary processes. Participants in the second study find the robot with bioinspired behaviors significantly warmer and more competent than the robot with predefined gestures, with no discomfort difference.

多模态交流是人类的一大特点,它能实现多样化的互动。在人机交互(HRI)中,机器人必须使用人类技能进行交流,这样才能显得自然并有效地提供协助。大多数研究使用预定义的手势来使机器人具备社交能力。然而,研究人员很少考虑通过生成生物启发的非自主行为来提高机器人的表达能力和交流能力。人类研究表明,非自主行为会影响他人对交流意图的感知。因此,模仿人类的非自主行为可能会对人机交互产生积极影响。本文通过一项用户研究,对使用生物启发来补充手势进行了评估,从而扩展了我们之前在为机器人配备非自主行为方面所做的工作。我们对 15 名参与者进行了初步测试,以确定他们能否感知心率、瞳孔大小、眨眼频率、呼吸频率和运动活动等非自主过程的强度。63 名新参与者与一个具有生物启发行为的机器人或一个只显示预定义手势的机器人进行了互动,以评估机器人的温暖程度、能力和不适感。结果显示,初步测试的参与者能够区分非自主过程的强度。在第二次研究中,参与者发现具有生物启发行为的机器人明显比具有预定义手势的机器人更温暖、更能干,而没有不适感差异。
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引用次数: 0
Artificial Intelligence-Augmented Additive Manufacturing: Insights on Closed-Loop 3D Printing 人工智能增强增材制造:闭环三维打印的启示
IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-09-29 DOI: 10.1002/aisy.202400102
Abdul Rahman Sani, Ali Zolfagharian, Abbas Z. Kouzani

The advent of 3D printing has transformed manufacturing. However, extending the library of materials to improve 3D printing quality remains a challenge. Defects can occur when printing parameters like print speed and temperature are chosen incorrectly. These can cause structural or dimensional issues in the final product. This review investigates closed-loop artificial intelligence-augmented additive manufacturing (AI2AM) technology that integrates AI-based monitoring, automation, and optimization of printing parameters and processes. AI2AM uses AI to improve defect detection and prevention, improving additive manufacturing quality and efficiency. This article explores generic 3D printing processes and issues using existing research and developments. Next, it focuses on fused deposition modeling (FDM) printers and reviews their parameters and issues. The current remedies developed for defect detection and monitoring in FDM 3D printers are presented. Then, the article investigates AI-based 3D printing monitoring, closed-loop feedback systems, and parameter optimization development. Finally, closed-loop 3D printing challenges and future directions are discussed. AI-based systems detect and correct 3D printing failures, enabling current printers to operate within optimal conditions and minimizing the risk of defects or failures, which in turn leads to more sustainable manufacturing with minimum waste and extending the library of materials.

三维打印技术的出现改变了制造业。然而,扩展材料库以提高 3D 打印质量仍然是一项挑战。如果打印速度和温度等打印参数选择不当,就会出现缺陷。这可能会导致最终产品出现结构或尺寸问题。本综述研究了闭环人工智能增强增材制造(AI2AM)技术,该技术集成了基于人工智能的打印参数和流程的监控、自动化和优化。AI2AM 利用人工智能改进缺陷检测和预防,从而提高增材制造的质量和效率。本文利用现有的研究和开发成果,探讨了一般的 3D 打印流程和问题。接下来,它将重点关注熔融沉积成型(FDM)打印机,并回顾其参数和问题。文章介绍了目前针对 FDM 3D 打印机缺陷检测和监控开发的补救措施。然后,文章研究了基于人工智能的 3D 打印监控、闭环反馈系统和参数优化开发。最后,讨论了闭环 3D 打印面临的挑战和未来发展方向。基于人工智能的系统可检测和纠正三维打印故障,使当前的打印机在最佳条件下运行,并最大限度地降低缺陷或故障风险,进而实现更可持续的制造,减少浪费并扩展材料库。
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引用次数: 0
Looming Detection in Complex Dynamic Visual Scenes by Interneuronal Coordination of Motion and Feature Pathways 通过运动和特征通路的神经元间协调实现复杂动态视觉场景中的隐蔽检测
IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-09-25 DOI: 10.1002/aisy.202470041
Bo Gu, Jianfeng Feng, Zhuoyi Song

Looming Detection in Complex Dynamic Visual Scenes

A novel fly-inspired neural network unleashes an incredibly enhanced looming detection performance in dynamic environments with converged neuro-dynamics, highlighting how the magic coordination of motion and feature signals helps reduce interference. For further details, see article number 2400198 by Bo Gu, Jianfeng Feng, and Zhuoyi Song.

复杂动态视觉场景中的隐现检测 一种新颖的苍蝇启发神经网络在神经动力学融合的动态环境中释放出令人难以置信的增强隐现检测性能,突出了运动和特征信号的神奇协调如何有助于减少干扰。更多详情,请参阅顾博、冯建峰和宋卓一撰写的第 2400198 号文章。
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引用次数: 0
Reconfigurable Transparent Variable-Stiffness Soft Robot for Underwater Operations 用于水下作业的可重构透明变刚度软机器人
IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-09-25 DOI: 10.1002/aisy.202470040
Qin Fang, Jingyu Zhang, Pingyu Xiang, Nenggan Zheng, Yue Wang, Rong Xiong, Zhefeng Gong, Haojian Lu

Soft Underwater Robots

Soft robots hold great significance for underwater operations due to their exceptional compliance and adaptability. In article number 2300688, Qin Fang, Zhefeng Gong, Haojian Lu, and co-workers introduce a transparent reconfigurable soft underwater robot with variable stiffness capability. The cover image shows a soft gripper for delicate underwater grasping and a soft manipulator for exploration in confined underwater environments, highlighting the robot’s potential for future underwater applications.

软体水下机器人 软体机器人因其卓越的顺应性和适应性而对水下作业具有重要意义。在编号为 2300688 的文章中,方琴、龚哲峰、卢浩建及其合作者介绍了一种具有可变刚度能力的透明可重构软体水下机器人。封面图片展示了一个用于水下精细抓取的软抓手和一个用于在密闭水下环境中探索的软机械手,凸显了该机器人在未来水下应用中的潜力。
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引用次数: 0
Tactile Sensing and Grasping Through Thin-Shell Buckling 通过薄壳弯曲实现触觉传感和抓取功能
IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-09-25 DOI: 10.1002/aisy.202470044
Kieran Barvenik, Zachary Coogan, Gabriele Librandi, Matteo Pezzulla, Eleonora Tubaldi

Tactile Sensing and Grasping Through Thin-Shell Buckling

Soft, hemispherical grippers create new opportunities for blending delicate manipulation with intrinsic tactile sensing. Inspired by deep-sea predatory tunicates, the fluidic hemispherical grippers provide a novel solution to the challenge of universal grasping with a unique sense of touch based on the principles of thin shell buckling. The simple device can passively detect environmental information solely by monitoring its internal fluid pressure, which opens new avenues for designing low-cost soft devices in applications ranging from medical robotics to underwater exploration. For more information, see article number 2300855 by Eleonora Tubaldi and co-workers.

通过薄壳屈曲实现触觉传感与抓取 柔软的半球形抓手为精细操作与内在触觉传感的融合创造了新的机遇。流体半球形抓手的灵感来源于深海掠食性鳞鳃纲动物,它以薄壳屈曲原理为基础,通过独特的触觉为通用抓取挑战提供了一种新颖的解决方案。这种简单的装置仅通过监测其内部流体压力就能被动地探测环境信息,这为设计从医疗机器人到水下探测等应用领域的低成本软装置开辟了新的途径。欲了解更多信息,请参阅 Eleonora Tubaldi 及其合作者撰写的第 2300855 号文章。
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引用次数: 0
Remotely Controlled 3D-Engineered Scaffolds for Biomimetic In Vitro Investigations on Brain Cell Cocultures 遥控三维工程支架用于仿生脑细胞体外培养研究
IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-09-25 DOI: 10.1002/aisy.202470043
Daniele De Pasquale, Attilio Marino, Carlotta Pucci, Omar Tricinci, Carlo Filippeschi, Pietro Fiaschi, Edoardo Sinibaldi, Gianni Ciofani

Magneto-Responsive Scaffolds for Biomimetic Investigations

In article number 2400261, Daniele De Pasquale, Edoardo Sinibaldi, Gianni Ciofani, and co-workers present geometrically engineered scaffolds fabricated with magneto-responsive materials, exploited for co-culturing glioma and healthy brain cells. The proposed structures are able to sustain 3D cultures and, thanks to the magnetic properties, allow their remote manipulation.

用于仿生研究的磁响应支架 在编号为 2400261 的文章中,Daniele De Pasquale、Edoardo Sinibaldi、Gianni Ciofani 及其合作者介绍了用磁响应材料制造的几何工程支架,该支架可用于共同培养胶质瘤和健康脑细胞。所提出的结构能够维持三维培养,由于具有磁性,还能对其进行远程操控。
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引用次数: 0
A Gecko-Inspired Robot Using Novel Variable-Stiffness Adhesive Paw Can Climb on Rough/Smooth Surfaces in Microgravity 受壁虎启发的机器人使用新型可变刚度粘合剂爪,可在微重力条件下在粗糙/光滑表面上攀爬
IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-09-22 DOI: 10.1002/aisy.202400043
Zhiwei Yu, Xiaofeng Xu, Benhua Zhao, Jiahui Fu, Linfeng Wang, Zhouyi Wang, Chengguang Fan, Simon X. Yang, Aihong Ji

Space-wall-climbing robots face the challenge of stably attaching to and moving on spacecraft surfaces, which include smooth flat areas and rough intricate surfaces. Although adhesion-based wall-climbing robots demonstrate stable climbing on smooth surfaces in outer space, there is scarce research on their stable adhesion on rough surfaces within a microgravity environment. A novel adhesive material is developed inspired by the adhesion mechanism and locomotion of the Gekko gecko. This material exhibits exceptional adhesion across various materials and surface roughness. A variable-stiffness gecko-inspired paw is engineered, generating substantial adhesion forces while minimizing detachment forces. Impressively, this paw generates up to 180 N of adhesion force on smooth surfaces and achieves detachment without external forces. By integrating such variable-stiffness paws with a wall-climbing robot, a gecko-inspired robot effectively operating in a microgravity environment is created. The robotic satellite surface climbing experiments and robotic satellite capture experiments are conducted using a simulated microgravity environment and a satellite model. The results unequivocally demonstrate the gecko-inspired robot's proficiency in executing various functions, including stable motion and capture on both smooth and rough spacecraft surfaces within a microgravity environment. These experiments underscore the potential of adhesion-based gecko-inspired robots for in-orbit services and spacecraft capture and recovery.

太空爬壁机器人面临着在航天器表面稳定附着和移动的挑战,这些表面包括光滑的平面区域和粗糙复杂的表面。虽然基于粘附力的爬壁机器人在外太空光滑表面上表现出稳定的爬行能力,但在微重力环境下粗糙表面上的稳定粘附力研究却很少。受壁虎的粘附机制和运动方式启发,我们开发了一种新型粘附材料。这种材料在各种材料和表面粗糙度上都表现出卓越的粘附性。受壁虎启发而设计的可变刚度爪可产生巨大的粘附力,同时将脱离力降至最低。令人印象深刻的是,这种爪子能在光滑表面上产生高达 180 牛顿的粘附力,并在没有外力的情况下实现脱离。通过将这种可变刚度的爪子与爬墙机器人集成,一个受壁虎启发的机器人就诞生了,它可以在微重力环境下有效地工作。利用模拟微重力环境和卫星模型进行了机器人卫星表面攀爬实验和机器人卫星捕获实验。实验结果清楚地表明,受壁虎启发的机器人能够熟练地执行各种功能,包括在微重力环境中的光滑和粗糙航天器表面上稳定运动和捕捉。这些实验强调了基于附着力的壁虎启发机器人在在轨服务以及航天器捕获和回收方面的潜力。
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引用次数: 0
A Microrobotic Design for the Spontaneous Tracing of Isochemical Contours in the Environment 用于自发追踪环境中等化学轮廓的微型机器人设计
IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-09-09 DOI: 10.1002/aisy.202400002
A. Merritt Brooks, Sungyun Yang, Byung Ha Kang, Michael S. Strano

Microrobotic platforms hold significant potential to advance a variety of fields, from medicine to environmental sensing. Herein, minimally functional robotic entities modeled on readily achievable state-of-the-art features in a modern lab or cleanroom are computationally simulated. Inspired by Dou and Bishop (Phys Rev Res. 2019;1(3):1–5), it is shown that the simple combination of unidirectional steering connected to a single environmental (chemical) sensor along with constant propulsion gives rise to highly complex functions of significant utility. Such systems can trace the contours orthogonal to arbitrary chemical gradients in the environment. Also, pairs of such robots that are additionally capable of emitting the same chemical signal are shown to exhibit coupled relative motion. When the pair has unidirectional steering in opposite directions within the 2D plane (i.e., counter-rotating), they move in parallel trajectories to each other. Alternatively, when steering is in the same direction (corotation), the two move in the same epicyclical trajectory. In this way, the chirality of the unidirectional steering produces two distinct emergent phenomena. The behavior is understood as a ratchet mechanism that exploits the differential in the radii of curvature corresponding to different spatial locations. Applications to environmental detection, remediation, and monitoring are discussed.

微型机器人平台在推动从医学到环境传感等多个领域的发展方面具有巨大潜力。在这里,以现代实验室或洁净室中容易实现的最先进功能为模型,对最小功能机器人实体进行了计算模拟。受 Dou 和 Bishop(Phys Rev Res. 2019;1(3):1-5)的启发,研究表明,单向转向与单个环境(化学)传感器的简单组合以及恒定推进力可产生具有重大实用价值的高度复杂功能。这种系统可以追踪与环境中任意化学梯度正交的轮廓。此外,一对能够发射相同化学信号的机器人还表现出耦合相对运动。当这对机器人在二维平面内向相反方向单向转向(即反向旋转)时,它们的运动轨迹相互平行。或者,当转向方向相同时(自转),二者的运动轨迹也是相同的。这样,单向转向的奇异性就产生了两种截然不同的突发现象。这种行为可以理解为一种棘轮机制,它利用了不同空间位置对应的曲率半径差异。本文讨论了其在环境检测、修复和监测方面的应用。
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引用次数: 0
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Advanced intelligent systems (Weinheim an der Bergstrasse, Germany)
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