Computer Animation and Virtual Worlds最新文献_第5页

Weisfeiler-Lehman Kernel Augmented Product Representation for Queries on Large-Scale BIM Scenes 面向大规模BIM场景查询的Weisfeiler-Lehman核增强产品表示

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2025-05-26 DOI: 10.1002/cav.70043

Huiqiang Hu, Changyan He, Xiaojun Liu, Jinyuan Jia, Ting Yu

{"title":"Weisfeiler-Lehman Kernel Augmented Product Representation for Queries on Large-Scale BIM Scenes","authors":"Huiqiang Hu, Changyan He, Xiaojun Liu, Jinyuan Jia, Ting Yu","doi":"10.1002/cav.70043","DOIUrl":"https://doi.org/10.1002/cav.70043","url":null,"abstract":"<div>\u0000 \u0000 <p>To achieve efficient querying of BIM products in large-scale virtual scenes, this study introduces a Weisfeiler-Lehman (WL) kernel augmented representation for Building Information Modeling(BIM) products based on Product Attributed Graphs (PAGs). Unlike conventional data-driven approaches that demand extensive labeling and preprocessing, our method directly processes raw BIM product data to extract stable semantic and geometric features. Initially, a PAG is constructed to encapsulate product features. Subsequently, a WL kernel enhanced multi-channel node aggregation strategy is employed to integrate BIM product attributes effectively. Leveraging the bijective relationship in graph isomorphism, an unsupervised convergence mechanism based on attribute value differences is established. Experiments demonstrate that our method achieves convergence within an average of 3 iterations, completes graph isomorphism testing in minimal time, and attains an average query accuracy of 95%. This approach outperforms 1-WL and 3-WL methods, especially in handling products with topologically isomorphic but oppositely attributed spaces.</p>\u0000 </div>","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"36 3","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135833","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

Risk-Aware Pedestrian Behavior Using Reinforcement Learning in Mixed Traffic 基于强化学习的混合交通风险感知行人行为研究

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2025-05-25 DOI: 10.1002/cav.70031

Cheng-En Cai, Sai-Keung Wong, Tzu-Yu Chen

引用次数: 0

Motion In-Betweening via Recursive Keyframe Prediction 通过递归关键帧预测运动之间

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2025-05-25 DOI: 10.1002/cav.70035

Rui Zeng, Ju Dai, Junxuan Bai, Junjun Pan

引用次数: 0

GSFaceMorpher: High-Fidelity 3D Face Morphing via Gaussian Splatting GSFaceMorpher：高保真3D人脸变形通过高斯飞溅

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2025-05-23 DOI: 10.1002/cav.70036

Xiwen Shi, Hao Zhao, Yi Jiang, Hao Xu, Ziyi Yang, Yiqian Wu, Qingbiao Wu, Xiaogang Jin

{"title":"GSFaceMorpher: High-Fidelity 3D Face Morphing via Gaussian Splatting","authors":"Xiwen Shi, Hao Zhao, Yi Jiang, Hao Xu, Ziyi Yang, Yiqian Wu, Qingbiao Wu, Xiaogang Jin","doi":"10.1002/cav.70036","DOIUrl":"https://doi.org/10.1002/cav.70036","url":null,"abstract":"<div>\u0000 \u0000 <p>High-fidelity 3D face morphing aims to achieve seamless transitions between realistic 3D facial representations of different identities. Although 3D Gaussian Splatting (3DGS) excels in high-quality rendering, its application to morphing is hindered by the lack of Gaussian primitive correspondence and variations in primitive quantities. To address this, we propose <i>GSFaceMorpher</i>, which is a novel framework for high-fidelity 3D face morphing based on 3DGS. Our method constructs an auxiliary model that bridges the source and target face models by aligning the geometry through Radial Basis Function (RBF) warping and optimizing the appearance in the image space. This auxiliary model enables smooth parameter interpolation, whereas a diffusion-based refinement step enhances critical facial details through attention replacement from the reference faces. Experiments demonstrate that our method produces visually coherent and high-fidelity morphing sequences, significantly outperforming NeRF-based baselines in terms of both quantitative metrics and user preferences. Our work establishes a new benchmark for high-fidelity 3D face morphing with applications in visual effects, animation, and immersive experiences.</p>\u0000 </div>","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"36 3","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144126047","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

A Control Simulation of Multiple Bubbles for Representing Desired Shapes 表示所需形状的多个气泡的控制仿真

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2025-05-23 DOI: 10.1002/cav.70037

Naruo Nishio, Syuhei Sato, Kaisei Sakurai, Keiko Nakamoto

引用次数: 0

Talk With Socrates: Relation Between Perceived Agent Personality and User Personality in LLM-Based Natural Language Dialogue Using Virtual Reality 与苏格拉底对话：基于llm的虚拟现实自然语言对话中感知代理人格与用户人格的关系

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2025-05-22 DOI: 10.1002/cav.70033

Mehmet Efe Sak, Sinan Sonlu, Uğur Güdükbay

{"title":"Talk With Socrates: Relation Between Perceived Agent Personality and User Personality in LLM-Based Natural Language Dialogue Using Virtual Reality","authors":"Mehmet Efe Sak, Sinan Sonlu, Uğur Güdükbay","doi":"10.1002/cav.70033","DOIUrl":"https://doi.org/10.1002/cav.70033","url":null,"abstract":"<div>\u0000 \u0000 <p>Large Language Models (LLMs) offer almost immediate human-like quality responses to user queries. Conversational agent systems support natural language dialogues utilizing LLM backends in combination with Text-to-Speech (TTS) and Automatic Speech Recognition (ASR) technologies, enabling life-like characters in virtual environments. This study investigates the relationship between user personality and perceived agent personality in LLM-based natural language dialogue. We adopt a Virtual Reality (VR) setting where the user can talk with the agent that assumes the role of Socrates, the famous philosopher. To this end, we utilize a three-dimensional (3D) avatar model resembling Socrates and use specific LLM prompts to get stylistic answers from OpenAI's Chat Completions Application Programming Interface (API). Our user study measures the agent's personality and the system's ease of use, quality, realism, and immersion concerning the user's self-reported personality. The results suggest that the user's conscientiousness, extraversion, and emotional stability have a moderate effect on certain personality factors and system qualities. User conscientiousness affects the perceived ease of use, quality, and realism, while user extraversion affects perceived agent conscientiousness, system realism, and immersion. Additionally, the user's emotional stability correlates with perceived extraversion and agreeableness.</p>\u0000 </div>","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"36 3","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117974","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

MemorIA, an Architecture for Creating Interactive AI Historical Agents in Educational Contexts MemorIA，一个用于在教育环境中创建交互式AI历史代理的架构

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2025-05-22 DOI: 10.1002/cav.70032

Antoine Oger, Geoffrey Gorisse, Sylvain Fleury, Olivier Christmann

{"title":"MemorIA, an Architecture for Creating Interactive AI Historical Agents in Educational Contexts","authors":"Antoine Oger, Geoffrey Gorisse, Sylvain Fleury, Olivier Christmann","doi":"10.1002/cav.70032","DOIUrl":"https://doi.org/10.1002/cav.70032","url":null,"abstract":"<p>This article presents the architecture of MemorIA, an integrative system that combines existing AI technologies into a coherent educational framework for creating interactive historical agents, with the aim of fostering students' learning interest. MemorIA generates animated digital portraits of historical figures, synchronizing facial expressions with synthesized speech to enable natural conversations with students. The system leverages NVIDIA Audio2Face for real-time facial animation with first-order motion model for portrait manipulation, achieving fluid interaction through low-latency audio-visual streaming. To assess our architecture in a field situation, we conducted a pilot study in middle school history classes, where students and teachers engaged in direct conversation with a virtual Julius Caesar during Roman history lessons. Students asked questions about ancient Rome, receiving contextually appropriate responses. While qualitative feedback suggests a positive trend toward increased student participation, some weaknesses and ethical considerations emerged. Based on this assessment, we discuss implementation challenges, suggest architectural improvements, and explore potential applications across various disciplines.</p>","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"36 3","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cav.70032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117973","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

Fuzzy Sampling With Qualified Uniformity Properties for Implicitly Defined Curves and Surfaces 隐定义曲线和曲面具有合格均匀性的模糊采样

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2025-05-21 DOI: 10.1002/cav.70022

Mingxiao Hu, Linlin Ge, Xujie Li

引用次数: 0

Research on Multi-Feature Fusion Shadow Puppet Motifs Generation Based on CSPMotifsGAN and Cultural Heritage Preservation 基于CSPMotifsGAN和文化遗产保护的多特征融合皮影图案生成研究

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2025-05-21 DOI: 10.1002/cav.70047

Hui Liang, Rui Wang

引用次数: 0

Toward Fluoroscopy Guided Robotic Needle Insertion for Radio Frequency Ablation 射频消融术中透视引导机器人插针的研究

IF 0.9 4区计算机科学

Computer Animation and Virtual Worlds Pub Date : 2025-05-19 DOI: 10.1002/cav.70025

Thuc-Long Ha, Juan Verde, Julien Bert, Hadrien Courtecuisse

{"title":"Toward Fluoroscopy Guided Robotic Needle Insertion for Radio Frequency Ablation","authors":"Thuc-Long Ha, Juan Verde, Julien Bert, Hadrien Courtecuisse","doi":"10.1002/cav.70025","DOIUrl":"https://doi.org/10.1002/cav.70025","url":null,"abstract":"<p>This article presents a fluoroscopy image-based registration method along with a comprehensive protocol for robotic needle insertion in radiofrequency ablation (RFA) to treat liver cancer. The proposed method uses real-time fluoroscopic images acquired from a C-ARM system and integrates an inverse finite element (FE) simulation to compute robotic commands for accurate and adaptive needle steering. The registration procedure is fully automated and involves the injection of multiple radiopaque markers into the liver, enabling precise anatomical registration and targeted tumor localization. A key challenge addressed in this work is the integration of this image-based registration with the inverse biomechanical simulation used to guide the robot during insertion. We describe how registration constraints can be mapped onto the surface of the biomechanical model to ensure consistent alignment between image data and robotic actuation. Designed to be adaptable to varying levels of radiologist expertise and applicable across a wide range of tumor locations, this method provides a robust and versatile solution for improving the accuracy and safety of minimally invasive liver cancer treatments.</p>","PeriodicalId":50645,"journal":{"name":"Computer Animation and Virtual Worlds","volume":"36 3","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cav.70025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085081","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