Computer Animation and Virtual Worlds最新文献_第9页

Enhancing virtual reality exposure therapy: Optimizing treatment outcomes for agoraphobia through advanced simulation and comparative analysis 加强虚拟现实暴露疗法：通过高级模拟和比较分析优化广场恐惧症的治疗效果

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2024-08-13 DOI: 10.1002/cav.2291

Jackson Yang, Xiaoping Che, Chenxin Qu, Xiaofei Di, Haiming Liu

{"title":"Enhancing virtual reality exposure therapy: Optimizing treatment outcomes for agoraphobia through advanced simulation and comparative analysis","authors":"Jackson Yang, Xiaoping Che, Chenxin Qu, Xiaofei Di, Haiming Liu","doi":"10.1002/cav.2291","DOIUrl":"https://doi.org/10.1002/cav.2291","url":null,"abstract":"This paper investigates the application of Virtual Reality Exposure Therapy (VRET) to treat agoraphobia, focusing on two pivotal research questions derived from identified gaps in current therapeutic approaches. The first question (RQ1) addresses the development of complex VR environments to enhance therapy's effectiveness by simulating real-world anxiety triggers. The second question (RQ2) examines the differential impact of these VR environments on agoraphobic and nonagoraphobic participants through rigorous comparative analyses using t-tests. Methodologies include advanced data processing techniques for electrodermal activity (EDA) and eye-tracking metrics to assess the anxiety levels induced by these environments. Additionally, qualitative methods such as structured interviews and questionnaires complement these measurements, providing deeper insights into the subjective experiences of participants. Video recordings of sessions using Unity software offer a layer of data, enabling the study to replay and analyze interactions within the VR environment meticulously. The experimental results confirm the efficacy of VR settings in eliciting significant physiological and psychological responses from participants, substantiating the VR scenarios' potential as a therapeutic tool. This study contributes to the broader discourse on the viability and optimization of VR technologies in clinical settings, offering a methodologically sound approach to the practicality and accessibility of exposure therapies for anxiety disorders.","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"35 4","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141980288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Real-time simulation of thin-film interference with surface thickness variation using the shallow water equations 利用浅水方程对表面厚度变化的薄膜干涉进行实时模拟

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2024-08-08 DOI: 10.1002/cav.2289

Mingyi Gu, Jiajia Dai, Jiazhou Chen, Ke Yan, Jing Huang

引用次数: 0

Frontal person image generation based on arbitrary-view human images 基于任意视角人体图像生成正面人像

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2024-07-23 DOI: 10.1002/cav.2234

Yong Zhang, Yuqing Zhang, Lufei Chen, Baocai Yin, Yongliang Sun

{"title":"Frontal person image generation based on arbitrary-view human images","authors":"Yong Zhang, Yuqing Zhang, Lufei Chen, Baocai Yin, Yongliang Sun","doi":"10.1002/cav.2234","DOIUrl":"10.1002/cav.2234","url":null,"abstract":"Frontal person images contain the richest detailed features of humans, which can effectively assist in behavioral recognition, virtual dress fitting and other applications. While many remarkable networks are devoted to the person image generation task, most of them need accurate target poses as the network inputs. However, the target pose annotation is difficult and time-consuming. In this work, we proposed a first frontal person image generation network based on the proposed anchor pose set and the generative adversarial network. Specifically, our method first classify a rough frontal pose to the input human image based on the proposed anchor pose set, and regress all key points of the rough frontal pose to estimate an accurate frontal pose. Then, we consider the estimated frontal pose as the target pose, and construct a two-stream generator based on the generative adversarial network to update the person's shape and appearance feature in a crossing way and generate a realistic frontal person image. Experiments on the challenging CMU Panoptic dataset show that our method can generate realistic frontal images from arbitrary-view human images.","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"35 4","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141772579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Peridynamic-based modeling of elastoplasticity and fracture dynamics 基于周动力的弹塑性和断裂动力学建模

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2024-07-16 DOI: 10.1002/cav.2242

Haoping Wang, Xiaokun Wang, Yanrui Xu, Yalan Zhang, Chao Yao, Yu Guo, Xiaojuan Ban

{"title":"Peridynamic-based modeling of elastoplasticity and fracture dynamics","authors":"Haoping Wang, Xiaokun Wang, Yanrui Xu, Yalan Zhang, Chao Yao, Yu Guo, Xiaojuan Ban","doi":"10.1002/cav.2242","DOIUrl":"https://doi.org/10.1002/cav.2242","url":null,"abstract":"This paper introduces a particle-based framework for simulating the behavior of elastoplastic materials and the formation of fractures, grounded in Peridynamic theory. Traditional approaches, such as the Finite Element Method (FEM) and Smoothed Particle Hydrodynamics (SPH), to modeling elastic materials have primarily relied on discretization techniques and continuous constitutive model. However, accurately capturing fracture and crack development in elastoplastic materials poses significant challenges for these conventional models. Our approach integrates a Peridynamic-based elastic model with a density constraint, enhancing stability and realism. We adopt the Von Mises yield criterion and a bond stretch criterion to simulate plastic deformation and fracture formation, respectively. The proposed method stabilizes the elastic model through a density-based position constraint, while plasticity is modeled using the Von Mises yield criterion within the bond of particle paris. Fracturing and the generation of fine fragments are facilitated by the fracture criterion and the application of complementarity operations to the inter-particle connections. Our experimental results demonstrate the efficacy of our framework in realistically depicting a wide range of material behaviors, including elasticity, plasticity, and fracturing, across various scenarios.","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"35 4","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141631145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

GPSwap: High-resolution face swapping based on StyleGAN prior GPSwap：基于 StyleGAN 先验的高分辨率人脸交换

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2024-07-11 DOI: 10.1002/cav.2238

Dongjin Huang, Chuanman Liu, Jinhua Liu

引用次数: 0

Neural foveated super-resolution for real-time VR rendering 用于实时虚拟现实渲染的神经凹陷超分辨率

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2024-07-11 DOI: 10.1002/cav.2287

Jiannan Ye, Xiaoxu Meng, Daiyun Guo, Cheng Shang, Haotian Mao, Xubo Yang

{"title":"Neural foveated super-resolution for real-time VR rendering","authors":"Jiannan Ye, Xiaoxu Meng, Daiyun Guo, Cheng Shang, Haotian Mao, Xubo Yang","doi":"10.1002/cav.2287","DOIUrl":"https://doi.org/10.1002/cav.2287","url":null,"abstract":"As virtual reality display technologies advance, resolutions and refresh rates continue to approach human perceptual limits, presenting a challenge for real-time rendering algorithms. Neural super-resolution is promising in reducing the computation cost and boosting the visual experience by scaling up low-resolution renderings. However, the added workload of running neural networks cannot be neglected. In this article, we try to alleviate the burden by exploiting the foveated nature of the human visual system, in a way that we upscale the coarse input in a heterogeneous manner instead of uniform super-resolution according to the visual acuity decreasing rapidly from the focal point to the periphery. With the help of dynamic and geometric information (i.e., pixel-wise motion vectors, depth, and camera transformation) available inherently in the real-time rendering content, we propose a neural accumulator to effectively aggregate the amortizedly rendered low-resolution visual information from frame to frame recurrently. By leveraging a partition-assemble scheme, we use a neural super-resolution module to upsample the low-resolution image tiles to different qualities according to their perceptual importance and reconstruct the final output adaptively. Perceptually high-fidelity foveated high-resolution frames are generated in real-time, surpassing the quality of other foveated super-resolution methods.","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"35 4","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141608012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and development of a mixed reality teaching systems for IV cannulation and clinical instruction 设计和开发用于静脉插管和临床教学的混合现实教学系统

IF 1.1 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2024-06-15 DOI: 10.1002/cav.2288

Wei Xiong, Yingda Peng

{"title":"Design and development of a mixed reality teaching systems for IV cannulation and clinical instruction","authors":"Wei Xiong, Yingda Peng","doi":"10.1002/cav.2288","DOIUrl":"https://doi.org/10.1002/cav.2288","url":null,"abstract":"Intravenous cannulation (IV) is a common technique used in clinical infusion. This study developed a mixed reality IV cannulation teaching system based on the Hololens2 platform. The paper integrates cognitive-affective theory of learning with media (CATLM) and investigates the cognitive engagement and willingness to use the system from the learners' perspective. Through experimental research on 125 subjects, the variables affecting learners' cognitive engagement and intention to use were determined. On the basis of CATLM, three new mixed reality attributes, immersion, system verisimilitude, and response time, were introduced, and their relationships with cognitive participation and willingness to use were determined. The results show that high immersion of mixed reality technology promotes students' higher cognitive engagement; however, this high immersion does not significantly affect learners' intention to use mixed reality technology for learning. Overall, cognitive and emotional theories are effective in mixed reality environments, and the model has good adaptability. This study provides a reference for the application of mixed reality technology in medical education.","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"35 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141329416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mastering broom-like tools for object transportation animation using deep reinforcement learning 利用深度强化学习掌握物体运输动画中的扫帚类工具

IF 1.1 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2024-06-14 DOI: 10.1002/cav.2255

Guan-Ting Liu, Sai-Keung Wong

引用次数: 0

Fast constrained optimization for cloth simulation parameters from static drapes 从静态窗帘快速约束优化布料模拟参数

IF 1.1 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2024-06-14 DOI: 10.1002/cav.2265

Eunjung Ju, Eungjune Shim, Kwang-yun Kim, Sungjin Yoon, Myung Geol Choi

{"title":"Fast constrained optimization for cloth simulation parameters from static drapes","authors":"Eunjung Ju, Eungjune Shim, Kwang-yun Kim, Sungjin Yoon, Myung Geol Choi","doi":"10.1002/cav.2265","DOIUrl":"https://doi.org/10.1002/cav.2265","url":null,"abstract":"We present a cloth simulation parameter estimation method that integrates the flexibility of global optimization with the speed of neural networks. While global optimization allows for varied designs in objective functions and specifying the range of optimization variables, it requires thousands of objective function evaluations. Each evaluation, which involves a cloth simulation, is computationally demanding and impractical time-wise. On the other hand, neural network learning methods offer quick estimation results but face challenges such as the need for data collection, re-training when input data formats change, and difficulties in setting constraints on variable ranges. Our proposed method addresses these issues by replacing the simulation process, typically necessary for objective function evaluations in global optimization, with a neural network for inference. We demonstrate that, once an estimation model is trained, optimization for various objective functions becomes straightforward. Moreover, we illustrate that it is possible to achieve optimization results that reflect the intentions of expert users through visualization of a wide optimization space and the use of range constraints.","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"35 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cav.2265","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141326755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward comprehensive Chiroptera modeling: A parametric multiagent model for bat behavior 实现全面的脊索动物建模：蝙蝠行为的多代理参数模型

IF 1.1 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2024-06-14 DOI: 10.1002/cav.2251

Brendan Marney, Brandon Haworth

{"title":"Toward comprehensive Chiroptera modeling: A parametric multiagent model for bat behavior","authors":"Brendan Marney, Brandon Haworth","doi":"10.1002/cav.2251","DOIUrl":"https://doi.org/10.1002/cav.2251","url":null,"abstract":"Chiroptera behavior is complex and often unseen as bats are nocturnal, small, and elusive animals. Chiroptology has led to significant insights into the behavior and environmental interactions of bats. Biology, ecology, and even digital media often benefit from mathematical models of animals including humans. However, the history of Chiroptera modeling is often limited to specific behaviors, species, or biological functions and relies heavily on classical modeling methodologies that may not fully represent individuals or colonies well. This work proposes a continuous, parametric, multiagent, Chiroptera behavior model that captures the latest research in echolocation, hunting, and energetics of bats. This includes echolocation-based perception (or lack thereof), hunting patterns, roosting behavior, and energy consumption rates. We proposed the integration of these mathematical models in a framework that affords the individual simulation of bats within large-scale colonies. Practitioners can adjust the model to account for different perceptual affordances or patterns among species of bats, or even individuals (such as sickness or injury). We show that our model closely matches results from the literature, affords an animated graphical simulation, and has utility in simulation-based studies.","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"35 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cav.2251","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141326753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0