Graphical Models最新文献

DC-APIC: A decomposed compatible affine particle in cell transfer scheme for non-sticky solid–fluid interactions in MPM DC-APIC：在MPM中非粘性固-液相互作用的细胞转移方案中分解的兼容仿射粒子

IF 2.5 4区计算机科学

Graphical Models Pub Date : 2025-05-25 DOI: 10.1016/j.gmod.2025.101269

Chenhui Wang , Jianyang Zhang , Chen Li , Changbo Wang

{"title":"DC-APIC: A decomposed compatible affine particle in cell transfer scheme for non-sticky solid–fluid interactions in MPM","authors":"Chenhui Wang , Jianyang Zhang , Chen Li , Changbo Wang","doi":"10.1016/j.gmod.2025.101269","DOIUrl":"10.1016/j.gmod.2025.101269","url":null,"abstract":"<div><div>Despite the material point method (MPM) provides a unified particle simulation framework for coupling of different materials, MPM suffers from sticky numerical artifacts, which is inherently restricted to sticky and no-slip interactions. In this paper, we propose a novel transfer scheme called Decomposed Compatible Affine Particle in Cell (DC-APIC) within the MPM framework for simulating the two-way coupled interaction between elastic solids and incompressible fluids under free-slip boundary conditions on a unified background grid. Firstly, we adopt particle-grid compatibility to describe the relationship between grid nodes and particles at the fluid–solid interface, which serves as the guideline for subsequent particle–grid–particle transfers. Then we develop a phase-field gradient method to track the compatibility and normal directions at the interface. Secondly, to facilitate automatic MPM collision resolution during solid–fluid coupling, in the proposed DC-APIC integrator, the tangential component will not be transferred between incompatible grid nodes to prevent velocity smoothing in another phase, while the normal component is transferred without limitations. Finally, our comprehensive results confirm that our approach effectively reduces diffusion and unphysical viscosity compared to traditional MPM.</div></div>","PeriodicalId":55083,"journal":{"name":"Graphical Models","volume":"139 ","pages":"Article 101269"},"PeriodicalIF":2.5,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134591","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

Human perception faithful curve reconstruction based on persistent homology and principal curve 基于持久同调和主曲线的人类感知忠实曲线重建

IF 2.5 4区计算机科学

Graphical Models Pub Date : 2025-05-24 DOI: 10.1016/j.gmod.2025.101267

Yu Chen, Hongwei Lin, Yifan Xing

引用次数: 0

RMAvatar: Photorealistic human avatar reconstruction from monocular video based on rectified mesh-embedded Gaussians RMAvatar：基于校正网格嵌入高斯函数的单目视频真人头像重建

IF 2.5 4区计算机科学

Graphical Models Pub Date : 2025-05-24 DOI: 10.1016/j.gmod.2025.101266

Sen Peng , Weixing Xie , Zilong Wang , Xiaohu Guo , Zhonggui Chen , Baorong Yang , Xiao Dong

{"title":"RMAvatar: Photorealistic human avatar reconstruction from monocular video based on rectified mesh-embedded Gaussians","authors":"Sen Peng , Weixing Xie , Zilong Wang , Xiaohu Guo , Zhonggui Chen , Baorong Yang , Xiao Dong","doi":"10.1016/j.gmod.2025.101266","DOIUrl":"10.1016/j.gmod.2025.101266","url":null,"abstract":"<div><div>We introduce RMAvatar, a novel human avatar representation with Gaussian splatting embedded on mesh to learn clothed avatar from a monocular video. We utilize the explicit mesh geometry to represent motion and shape of a virtual human and implicit appearance rendering with Gaussian Splatting. Our method consists of two main modules: Gaussian initialization module and Gaussian rectification module. We embed Gaussians into triangular faces and control their motion through the mesh, which ensures low-frequency motion and surface deformation of the avatar. Due to the limitations of LBS formula, the human skeleton is hard to control complex non-rigid transformations. We then design a pose-related Gaussian rectification module to learn fine-detailed non-rigid deformations, further improving the realism and expressiveness of the avatar. We conduct extensive experiments on public datasets, and RMAvatar shows state-of-the-art performance on both rendering quality and quantitative evaluations. Please see our project page at <span><span>https://rm-avatar.github.io</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":55083,"journal":{"name":"Graphical Models","volume":"139 ","pages":"Article 101266"},"PeriodicalIF":2.5,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123954","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

Semantics-aware human motion generation from audio instructions 从音频指令生成语义感知的人体运动

IF 2.5 4区计算机科学

Graphical Models Pub Date : 2025-05-23 DOI: 10.1016/j.gmod.2025.101268

Zi-An Wang , Shihao Zou , Shiyao Yu , Mingyuan Zhang , Chao Dong

引用次数: 0

Design method of porous scaffold based on TPMS and KM growth function 基于TPMS和KM生长函数的多孔支架设计方法

IF 2.5 4区计算机科学

Graphical Models Pub Date : 2025-05-02 DOI: 10.1016/j.gmod.2025.101265

Yi Zhang, Jiong Liu, Quan Qi

{"title":"Design method of porous scaffold based on TPMS and KM growth function","authors":"Yi Zhang, Jiong Liu, Quan Qi","doi":"10.1016/j.gmod.2025.101265","DOIUrl":"10.1016/j.gmod.2025.101265","url":null,"abstract":"<div><div>Additive manufacturing technology, as a cutting-edge manufacturing process, has shown great potential in the preparation of 3D tissue engineering scaffolds with complex pore structures. The multi-functional scaffolds produced by this technology can provide a combination of excellent mechanical and biological properties, such as high stiffness, strength, toughness and good fluid permeability. Among many stent design methods, pore shape design based on triply periodic minimal surface is favored because of its advantages in controlling design parameters such as aperture, pore shape and internal channel connectivity. In this paper, a new design method for multi-shape scaffolds is proposed, which combines KM growth function and shape conformal mixing technique to construct a complex pore structure consisting of multiple triply periodic minimal surfaces and arbitrary transition boundaries in a scaffold. The advantage of this method is that it can flexibly control the mixed form of the resulting scaffold, and then explore and optimize a variety of transition pore forms to achieve a combination of multi-functiona characteristics such as high strength and excellent fluid permeability.</div></div>","PeriodicalId":55083,"journal":{"name":"Graphical Models","volume":"139 ","pages":"Article 101265"},"PeriodicalIF":2.5,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899399","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

Initialization of cutting tools and milling paths for 5-axis CNC flank milling of freeform surfaces 自由曲面五轴数控侧铣刀具和铣削路径的初始化

IF 2.5 4区计算机科学

Graphical Models Pub Date : 2025-04-24 DOI: 10.1016/j.gmod.2025.101264

Pengbo Bo , Siyu Xue , Xiwen Xu , Caiming Zhang

{"title":"Initialization of cutting tools and milling paths for 5-axis CNC flank milling of freeform surfaces","authors":"Pengbo Bo , Siyu Xue , Xiwen Xu , Caiming Zhang","doi":"10.1016/j.gmod.2025.101264","DOIUrl":"10.1016/j.gmod.2025.101264","url":null,"abstract":"<div><div>Tool shape selection and path planning are critical for 5-axis CNC flank milling of freeform surfaces, typically addressed using optimization algorithms where initialization plays a pivotal role. Existing approaches rely on user-specified initialization of either tool shapes or motion paths, often resulting in suboptimal outcomes. This paper introduces a fully automated method that simultaneously initializes both tool shapes and motion paths, achieving high-precision machining with efficient surface coverage. Our approach explores a solution space of potential tool axes represented by line segments near the design surface. To efficiently manage the vast number of lines, we integrate space voxelization with a discrete distance field for effective line sampling. A graph-based algorithm generates feasible line sequences for motion paths, while path optimization refines a single tool shape across multiple paths simultaneously. The method identifies optimal tool shapes of various sizes, each paired with corresponding motion paths for multi-pass machining. Experiments on industrial benchmark models and freeform surfaces validate the effectiveness and practicality of the proposed approach.</div></div>","PeriodicalId":55083,"journal":{"name":"Graphical Models","volume":"139 ","pages":"Article 101264"},"PeriodicalIF":2.5,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870721","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

CADTrans: A code tree-guided CAD generative transformer model with regularized discrete codebooks CADTrans：代码树引导的 CAD 生成变换器模型与正则化离散代码本

IF 2.5 4区计算机科学

Graphical Models Pub Date : 2025-04-11 DOI: 10.1016/j.gmod.2025.101262

Xufei Guo , Xiao Dong , Juan Cao , Zhonggui Chen

{"title":"CADTrans: A code tree-guided CAD generative transformer model with regularized discrete codebooks","authors":"Xufei Guo , Xiao Dong , Juan Cao , Zhonggui Chen","doi":"10.1016/j.gmod.2025.101262","DOIUrl":"10.1016/j.gmod.2025.101262","url":null,"abstract":"<div><div>The creation of computational agents capable of generating computer-aided design (CAD) models that rival those produced by professional designers is a pressing challenge in the field of computational design. The key obstacle is the need to generate a large number of realistic and diverse models while maintaining control over the output to a certain degree. Therefore, we propose a novel CAD model generation network called CADTrans which is based on a code tree-guided transformer framework to autoregressively generate CAD construction sequences. Firstly, three regularized discrete codebooks are extracted through vector quantized adversarial learning, with each codebook respectively representing the features of Loop, Profile, and Solid. Secondly, these codebooks are used to normalize a CAD construction sequence into a structured code tree representation which is then used to train a standard transformer network to reconstruct the code tree. Finally, the code tree is used as global information to guide the sketch-and-extrude method to recover the corresponding geometric information, thereby reconstructing the complete CAD model. Extensive experiments demonstrate that CADTrans achieves state-of-the-art performance, generating higher-quality, more varied, and complex models. Meanwhile, it provides more possibilities for CAD applications through its flexible control method, enabling users to quickly experiment with different design schemes, inspiring diverse design ideas and the generation of a wide variety of models or even inspiring models, thereby improving design efficiency and promoting creativity. The code is available at <span><span>https://effieguoxufei.github.io/CADtrans/</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":55083,"journal":{"name":"Graphical Models","volume":"139 ","pages":"Article 101262"},"PeriodicalIF":2.5,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817456","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

An efficient parametric modeling and path planning method for 3D printing of curved surface corrugated sandwich structures 曲面波纹夹层结构三维打印的高效参数化建模与路径规划方法

IF 2.5 4区计算机科学

Graphical Models Pub Date : 2025-04-10 DOI: 10.1016/j.gmod.2025.101263

Tan Gui , Zhihong Li , Yongjun Cao , Jianghong Yang , Yingjun Wang

{"title":"An efficient parametric modeling and path planning method for 3D printing of curved surface corrugated sandwich structures","authors":"Tan Gui , Zhihong Li , Yongjun Cao , Jianghong Yang , Yingjun Wang","doi":"10.1016/j.gmod.2025.101263","DOIUrl":"10.1016/j.gmod.2025.101263","url":null,"abstract":"<div><div>This study proposes an efficient preprocessing method and parametric modeling technique for the path planning of corrugated curved surface sandwich structures. Focusing on the characteristics of Fused Deposition Modeling (FDM), the model undergoes preprocessing for two types of path planning, segmenting the sandwich structure for Eulerian Path Printing (EPP) and Eulerian Circuit Printing (ECP). Algorithms were developed using the SolidWorks API for secondary development, resulting in a standalone plugin module. This plugin streamlines adaptive modeling of corrugated sandwich structures on curved surfaces, showcasing strong versatility. Additionally, a comparison of the printing time between preprocessed models and standard models reveals a significant reduction in nozzle idle time. Moreover, as the infill density increases, the reduction in printing time becomes more pronounced. Finally, compression tests confirmed that printed parts obtained using the EPP and ECP methods maintained comparable mechanical properties to those printed using conventional methods.</div></div>","PeriodicalId":55083,"journal":{"name":"Graphical Models","volume":"139 ","pages":"Article 101263"},"PeriodicalIF":2.5,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143808721","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

Topology-controlled Laplace–Beltrami operator on point clouds based on persistent homology 基于持久同调的点云拓扑控制拉普拉斯-贝尔特拉米算子

IF 2.5 4区计算机科学

Graphical Models Pub Date : 2025-04-02 DOI: 10.1016/j.gmod.2025.101261

Ao Zhang, Qing Fang, Peng Zhou, Xiao-Ming Fu

{"title":"Topology-controlled Laplace–Beltrami operator on point clouds based on persistent homology","authors":"Ao Zhang, Qing Fang, Peng Zhou, Xiao-Ming Fu","doi":"10.1016/j.gmod.2025.101261","DOIUrl":"10.1016/j.gmod.2025.101261","url":null,"abstract":"<div><div>Computing the Laplace–Beltrami operator on point clouds is essential for tasks such as smoothing and shape analysis. Unlike meshes, determining the Laplace–Beltrami operator on point clouds requires establishing neighbors for each point. However, traditional <span><math><mi>k</mi></math></span>-nearest neighbors (k-NN) methods for estimating local neighborhoods often introduce spurious connectivities that distort the manifold topology. We propose a novel approach that leverages persistent homology to refine the neighborhood graph by identifying and removing erroneous edges. Starting with an initial k-NN graph, we assign weights based on local tangent plane estimations and construct a Vietoris–Rips complex. Persistent homology is then employed to detect and eliminate spurious edges through a topological optimization process. This iterative refinement results in a more accurate neighborhood graph that better represents the underlying manifold, enabling precise discretization of the Laplace–Beltrami operator. Experimental results on various point cloud datasets demonstrate that our method outperforms traditional k-NN approaches by more accurately capturing the manifold topology and enhancing downstream computations such as spectral analysis.</div></div>","PeriodicalId":55083,"journal":{"name":"Graphical Models","volume":"139 ","pages":"Article 101261"},"PeriodicalIF":2.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746699","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

Additive manufacturing toward 2D and 3D freeform lattices with conforming compliant bi-/multi-stable tiles 二维和三维自由网格的增材制造，具有符合要求的双/多稳定瓷砖

IF 2.5 4区计算机科学

Graphical Models Pub Date : 2025-03-28 DOI: 10.1016/j.gmod.2025.101260

Gershon Elber

引用次数: 0