检索结果-内蒙古大学图书馆

The 6th International Conference on Geometric Science of Information, GSI 2023

作者： Tumpach, Alice Barbora Kán, Peter Institut CNRS Pauli Oskar-Morgenstern-Platz 1 Vienna1090 Austria University of Lille Cité scientifique Villeneuve d’Ascq59650 France Institute of Visual Computing and Human-Centered Technology TU Wien Vienna Austria

ISBN: (纸本)9783031382987

Temporal alignment is an inherent task in most applications dealing with videos: action recognition, motion transfer, virtual trainers, rehabilitation, etc. In this paper we dive into the understanding of this task from a geometric point of view: in particular, we show that the basic properties that are expected from a temporal alignment procedure imply that the set of aligned motions to a template form a slice to a principal fiber bundle for the group of temporal reparameterizations. A temporal alignment procedure provides a reparameterization invariant projection onto this particular slice. This geometric presentation allows us to elaborate a consistency check for testing the accuracy of any temporal alignment procedure. We apply this consistency check to some alignment procedures from the literature based on dynamic programming for the task of aligning motions of tennis players. The comparison of the obtained results leads us to propose a version of dynamic programming that incorporates keyframe correspondences. The temporal alignment procedures produced are not only more accurate, but also computationally more efficient. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Dynamic programming

来源：评论

学校读者我要写书评

暂无评论

cVIL: Class-Centric visual Interactive Labeling

arXiv

引用

arXiv 2024年

作者： Matt, Matthias Zeppelzauer, Matthias Waldner, Manuela TU Wien Institute of Visual Computing & Human-Centered Technology Austria St. Pölten University of Applied Sciences Austria

(Image Presented) We present cVIL, a class-centric approach to visual interactive labeling, which facilitates human annotation of large and complex image data sets. cVIL uses different property measures to support instance labeling for labeling difficult instances and batch labeling to quickly label easy instances. Simulated experiments reveal that cVIL with batch labeling can outperform traditional labeling approaches based on active learning. In a user study, cVIL led to better accuracy and higher user preference compared to a traditional instance-based visual interactive labeling approach based on 2D scatterplots. © 2024, CC BY.

关键词：

来源：评论

学校读者我要写书评

暂无评论

BaggingHook: Selecting Moving Targets by Pruning Distractors Away for Intention-Prediction Heuristics in Dense 3D Environments

BaggingHook: Selecting Moving Targets by Pruning Distractors...

引用

IEEE Annual International Symposium Virtual Reality

作者： Paolo Boffi Alexandre Kouyoumdjian Manuela Waldner Pier Luca Lanzi Ivan Viola Visual Computing Center (VCC) King Abdullah University of Science and Technology Dipartimento di Elettronica Informazione e Bioingegneria (DEIB) Politecnico di Milano Institute of Visual Computing and Human-Centered Technology TU Wien

Selecting targets in dense, dynamic 3D environments presents a significant challenge. In this study, we introduce two novel selection techniques based on distractor pruning to assist users in selecting targets moving unpredictably: BaggingHook and AutoBaggingHook. Both are built upon the Hook intention-prediction heuristic, which continuously measures the distance between the user’s cursor and each object to compute per-object scores and estimate the intended target. Our techniques reduce the number of targets in the environment, making heuristic convergence potentially faster. Once pruned away, distractors are also made semi-transparent to reduce occlusion and the overall difficulty of the task. However, their motion is not altered, so that users can still perceive the dynamics of the environment. We designed two pruning approaches: BaggingHook lets users manually prune distractors away, while AutoBaggingHook uses automated, score-based pruning. We conducted a user study in a virtual reality setting inspired by molecular dynamics simulations, featuring crowded scenes of objects moving fast and unpredictably, in 3D. We compared both proposed techniques to the Hook baseline under more challenging circumstances than it had previously been tested. Our results show that AutoBaggingHook was the fastest, and did not lead to higher error rates. BaggingHook, on the other hand, was preferred by the majority of participants, due to the greater degree of control it provides to users, leading some to see entertainment value in its use. This work shows the potential benefits of varying the types of inputs used in intention-prediction heuristics, not just to improve performance, but also to reduce occlusion, overall task load, and improve user experience.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Feature Selection and Multi-task Learning for Pedestrian Crossing Prediction

Feature Selection and Multi-task Learning for Pedestrian Cro...

引用

International IEEE Conference on Signal-Image Technologies and Internet-Based System

作者： Dominik Schörkhuber Maximilian Pröll Margrit Gelautz Institute of Visual Computing and Human-Centered Technology TU Wien Vienna Austria

Understanding pedestrians’ behaviour is a major challenge for autonomous vehicles in urban environments. An intelligent driving system needs to recognize intentions and anticipate future actions. For the task of pedestrian crossing prediction, we aim to predict the crossing of a pedestrian in traffic from visual features, such that an oncoming vehicle has sufficient time to react. In this work, we assess the efficacy of different input modalities such as human poses, bounding boxes, ego vehicle speed and image-based features for pedestrian crossing prediction. Our findings indicate that image-based features are less effective than suggested in the literature and that our newly generated human poses improve pedestrian crossing prediction. Furthermore, we present a neural network architecture based on recurrent units and multi-task learning which demonstrates that the joint training of multiple tasks has beneficial influence on the capability to identify crossing pedestrians. We evaluate our methods based on the public PIE and JAAD datasets, and generate models on par with state-of-the-art methods with a limited set of features.

关键词： Training visualization Neural networks Urban areas Predictive models Multitasking Feature extraction

来源：评论

学校读者我要写书评

暂无评论

Storytelling in the Metaverse: From Desktop to Immersive Virtual Reality Storyboarding

Storytelling in the Metaverse: From Desktop to Immersive Vir...

引用

Metrology for Extended Reality, Artificial Intelligence and Neural Engineering (MetroXRAINE), IEEE International Conference on

作者： Federico Manuri Andrea Sanna Francesco De Pace DAUIN Politecnico di Torino Torino Italy Institute of Visual Computing and Human-Centered Technology TU Wien Vienna Austria

Creatives from the animation and film industries have always been experimenting with innovative tools and methodologies to improve the creation of prototypes of their visual sequences before bringing them to life. In recent years, as realistic real-time rendering techniques have emerged, the increasing popularity of virtual reality (VR) can lead to new approaches and solutions, leveraging the immersive and interactive features provided by 3D immersive experiences. A 3D desktop application and a novel storyboarding pipeline, which can automatically generate a storyboard including camera details and a textual description of the actions performed in three-dimensional environments, have already been investigated in previous work. The aim was to exploit new technologies to improve existing 3D storytelling approaches, thus providing a software solution for expert and novice storyboarders. This research investigates 3D storyboarding in immersive virtual reality (IVR) to move toward a new storyboarding paradigm. IVR systems provide peculiarities such as body-controlled exploration of the 3D scene and a head-dependant camera view that can extend features of traditional storyboarding tools. The proposed system enables users to set up the virtual stage, adding elements to the scene and exploring the environment as they build it. After that, users can select the available characters or the camera, control them in first person, position them in the scene, and perform actions selecting from a list of options, each paired with a corresponding animation. Relying on the concept of state-machine, the system can automatically generate the list of available actions depending on the context. Finally, the descriptions for each storyboard panel are automatically generated based on the history of activities performed. The proposed application maintains all the functionalities of the desktop version and can be effectively used to create storyboards in immersive virtual environments.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Integrating AEC Domain-Specific Multidisciplinary Knowledge for Informed and Interactive Feedback in Early Design Stages 1

引用

19th International Conference on computing in Civil and Building Engineering, ICCCBE 2022

作者： Reisinger, Julia Rasoulzadeh, Shervin Kovacs, Balint Istvan Ferschin, Peter Vasylevska, Khrystyna Hensel, Michael Kovacic, Iva Wimmer, Michael Department for Integrated Planning and Industrial Building TU Wien Vienna Austria Department for Digital Architecture and Planning TU Wien Vienna Austria Research Unit of Computer Graphics TU Wien Vienna Austria Institute of Visual Computing & Human-Centered Technology TU Wien Vienna Austria

ISBN: (数字)9783031325151

ISBN: (纸本)9783031325144

In the context of digitalization in the industry, a variety of technologies has been developed for system integration and enhanced team collaboration in the Architecture, Engineering and Construction (AEC) industry. Multidisciplinary design requirements are characterized by a high degree of complexity. Early design methods often rely on implicit or experiential design knowledge, whereas contemporary digital design tools mostly reflect domain-specific silo thinking with time-consuming iterative design processes. Yet, the early design stages hold the greatest potential for design optimization. This paper presents a framework of a multidisciplinary computational integration platform for early design stages that enables integration of AEC domain-specific methods from architecture, engineering, mathematics and computer science. The platform couples a semantic integrative mixed reality sketching application to a shape inference machine-learning based algorithm to link methods for different computation, simulation and digital fabrication tasks. A proof of concept of the proposed framework is presented for the use case of a freeform geometry wall. Future research will explore the potential of the framework to be extended to larger building projects with the aim to connect the method into BIM-processes. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Iterative methods

来源：评论

学校读者我要写书评

暂无评论

A Multilevel Approach for Event-Based Dynamic Graph Drawing

A Multilevel Approach for Event-Based Dynamic Graph Drawing

引用

23rd Eurographics Conference on visualization, EuroVis 2021

作者： Arleo, A. Miksch, S. Archambault, D. TU Wien Institute of Visual Computing and Human-Centered Technology Austria Swansea University United Kingdom

ISBN: (纸本)9783038681434

The timeslice is the predominant method for drawing and visualizing dynamic graphs. However, when nodes and edges have real coordinates along the time axis, it becomes difficult to organize them into discrete timeslices, without a loss of temporal information due to projection. Event-based dynamic graph drawing rejects the notion of a timeslice and allows each node and edge to have its own real-valued time coordinate. Nodes are represented as trajectories of adaptive complexity that are drawn directly in the three-dimensional space-time cube (2D + t). Existing work has demonstrated clear advantages for this approach, but these advantages come at a running time cost. In response to this scalability issue, we present MultiDynNoS, the first multilevel approach for event-based dynamic graph drawing. We consider three operators for coarsening and placement, inspired by Walshaw, GRIP, and FM3, which we couple with an event-based graph drawing algorithm. We evaluate our approach on a selection of real graphs, showing that it outperforms timeslice-based and existing event-based techniques. © 2021 Eurographics Association. All rights reserved.

关键词： Coarsening

来源：评论

学校读者我要写书评

暂无评论

With a Little Help of humans. An Exploratory Study of Delivery Robots Stuck in Snow

With a Little Help of Humans. An Exploratory Study of Delive...

引用

IEEE International Workshop on Robot and human Communication (ROMAN)

作者： Anna Dobrosovestnova Isabel Schwaninger Astrid Weiss Institute of Visual Computing and Human-Centered Technology (HCI Group) TU Wien Vienna Austria

ISBN: (数字)9781728188591

ISBN: (纸本)9781665406802

People’s willingness to help robots has been explored in the lab and in the wild in various settings. While previous studies relied on robotic prototypes, service robots are now already deployed in public spaces. This presents a novel and exciting opportunity for human-robot interaction (HRI) scholars to study robotic technologies in the context of their deployment. In this paper, we present the qualitative methodology and the outcomes of an exploratory mixed-methods (observations, autoethnography, online content analysis) study of people voluntarily helping commercially deployed delivery robots in Tallinn, Estonia. Based on the cumulative findings of the three methods, we discuss how spontaneous help towards robots manifested, the situational factors that may have contributed to the observed helping behaviors, and the role that the perceptions of the robots as cute and helpful may have played in these interactions. While our findings support the assumption that human help is a reasonable mitigation strategy to overcoming the challenges service robots may face in uncontrolled environments, we also emphasize the importance of considering the ethical implications when commercial technology relies in part on passersby to succeed in its tasks.

关键词： Ethics Service robots Snow Prototypes Behavioral sciences Task analysis Robots

来源：评论

学校读者我要写书评

暂无评论

Detection of Copy-Move Forgery in Digital Images Using Singular Value Decomposition

引用

Computers, Materials & Continua 2023年第2期74卷 4135-4147页

作者： Zaid Nidhal Khudhair Farhan Mohamed Amjad Rehman Tanzila Saba Saeed Ali bahaj Faculty of Engineering School of ComputingUniversity Technology of MalaysiaJohar BahruMalaysia UTM-IRDA MaGICX Institute of Human Centered EngineeringUniversiti Teknologi MalaysiaMalaysia Artificial Intelligence&Data Analytics Lab CCIS Prince Sultan University Riyadh Saudi Arabia Computer Techniques Engineering Department Faculty of Information TechnologyImam Ja’afar Al-Sadiq UniversityBaghdadIraq

This paper presents an improved approach for detecting copy-move forgery based on singular value decomposition(SVD).It is a block-based method where the image is scanned from left to right and top to down by a sliding window with a determined *** each step,the SVD is ***,the diagonal matrix’s maximum value(norm)is selected(representing the scaling factor for SVD and a fixed value for each set of matrix elements even when rotating thematrix or scaled).Then,the similar norms are grouped,and each leading group is separated into many subgroups(elements of each subgroup are neighbors)according to 8-adjacency(the subgroups for each leading group must be far from others by a specific distance).After that,a weight is assigned for each subgroup to classify the image as forgery or ***,the F1 score of the proposed system is measured,reaching 99.1%.This approach is robust against rotation,scaling,noisy images,and illumination *** is compared with other similarmethods and presents very promised results.

关键词： Forgery image forensic image processing region duplication SVD transformation technological development

来源：评论

学校读者我要写书评

暂无评论

CUDA and Applications to Task-based Programming

CUDA and Applications to Task-based Programming

引用

43rd Annual Conference on European Association for Computer Graphics, EUROGRAPHICS 2022

作者： Kerbl, Bernhard Kenzel, Michael Winter, Martin Steinberger, Markus TU Wien Institute of Visual Computing and Human-Centered Technology Austria Saarland University Computer Graphics Lab Germany Intelligent Cloud Rendering Laboratory Huawei Technologies Austria Graz University of Technology Institute of Computer Graphics and Vision Austria

ISBN: (纸本)9783038681724

Since its inception, the CUDA programming model has been continuously evolving. Because the CUDA toolkit aims to consistently expose cutting-edge capabilities for general-purpose compute jobs to its users, the added features in each new version reflect the rapid changes that we observe in GPU architectures. Over the years, the changes in hardware, growing scope of built-in functions and libraries, as well as an advancing C++ standard compliance have expanded the design choices when coding for CUDA, and significantly altered the directives to achieve peak performance. In this tutorial, we give a thorough introduction to the CUDA toolkit, demonstrate how a contemporary application can benefit from recently introduced features and how they can be applied to task-based GPU scheduling in particular. For instance, we will provide detailed examples of use cases for independent thread scheduling, cooperative groups, and the CUDA standard library, libcu++, which are certain to become an integral part of clean coding for CUDA in the near future. © 2022 The Author(s)

关键词： Regulatory compliance

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：