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检索条件"任意字段=12th International Conference on 3D Web Technology"

共 4927 条记录，以下是11-20 订阅

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MYRTE, A Lightweight flexible platform to create 360 degree cultural heritage virtual tours for non-it expert 24

MYRTE, A Lightweight flexible platform to create 360 degree ...

引用

29th international ACM conference on 3d web technology (web3d)

作者： Bergerot, Laurent UPR 2002 CNRS MAP Marseille France

ISBN: (纸本)9798400706899

this poster presents MYRTE, an acronym for MY viRtual tour for archiTecture and cultural heritagE, an initiative aimed at developing a dIY virtual tour application based on 360-degree panoramas. It is designed to be used by non-experts for both viewing existing tours and creating/editing new ones, serving purposes of both research and education.

关键词： Virtual reality web3d Cultural heritage 360-degree panoramas homemade dIY lightweight cross-platform point cloud virtual tour non IT expert user pedagogy exploratory

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SWEETdREAMER: ALIGNING GEOMETRIC PRIORS IN 2d dIFFUSION FOR CONSISTENT TEXT-TO-3d 12

SWEETDREAMER: ALIGNING GEOMETRIC PRIORS IN 2D DIFFUSION FOR ...

引用

12th international conference on Learning Representations, ICLR 2024

作者： Li, Weiyu Chen, Rui Chen, Xuelin Tan, Ping Hong Kong University of Science and Technology Hong Kong Light Illusions Hong Kong South China University of Technology China Tencent AI Lab China

It is inherently ambiguous to lift 2d results from pre-trained diffusion models to a 3d world for text-to-3d generation. 2d diffusion models solely learn view-agnostic priors and thus lack 3d knowledge during the lifting, leading to the multi-view inconsistency problem. We find that this problem primarily stems from geometric inconsistency, and avoiding misplaced geometric structures substantially mitigates the problem in the final outputs. therefore, we improve the consistency by aligning the 2d geometric priors in diffusion models with well-defined 3d shapes during the lifting, addressing the vast majority of the problem. this is achieved by fine-tuning the 2d diffusion model to be viewpoint-aware and to produce view-specific coordinate maps of canonically oriented 3d objects. In our process, only coarse 3d information is used for aligning. this "coarse" alignment not only resolves the multi-view inconsistency in geometries but also retains the ability in 2d diffusion models to generate detailed and diversified high-quality objects unseen in the 3d datasets. Furthermore, our aligned geometric priors (AGP) are generic and can be seamlessly integrated into various state-of-the-art pipelines, obtaining high generalizability in terms of unseen shapes and visual appearance while greatly alleviating the multi-view inconsistency problem. © 2024 12th international conference on Learning Representations, ICLR 2024. All rights reserved.

关键词： Geometry

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webGL-based Image Processing through JavaScript Injection 24

WebGL-based Image Processing through JavaScript Injection

引用

29th international ACM conference on 3d web technology (web3d)

作者： Meyer, Tim Rodosek, Gabi dreo Haehn, daniel Univ Bundeswehr Munchen Neubiberg Germany Univ Massachusetts Boston Boston MA USA

ISBN: (纸本)9798400706899

Can we modify existing web-based computer graphics content through JavaScript injection? We study how to hijack the webGL context of any external website to perform GPU-accelerated image processing and scene modification. this allows client-side modification of 2d and 3d content without access to the web server. We demonstrate how JavaScript can overload an existing webGL context and present examples such as color replacement, edge detection, image filtering, and complete visual transformations of external websites, as well as vertex and geometry processing and manipulation. We discuss the potential of such an approach and present open-source software for real-time processing using a bookmarklet implementation.

关键词： webGL webGL2 web-based Image Processing Vertex Processing JavaScript Injection

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Conceptualizing Interoperable 3d Geospatial data Visualization with X3d and OGC 3d Tiles 24

Conceptualizing Interoperable 3D Geospatial Data Visualizati...

引用

29th international ACM conference on 3d web technology (web3d)

作者： Plesch, Andreas Havele, Anita Mccann, Mike Harvard Univ Cambridge MA USA Web3D Consortium Menlo Pk CA 94025 USA Monterey Bay Aquarium Res Inst Moss Landing CA USA

ISBN: (纸本)9798400706899

We describe our concept and implementation outline of bridging two popular but disconnected geospatial ecosystems, web3d Consortium's X3d and OGC's 3d Tiles with the goal of achieving synergies to both while improving workflows. there are potentially many benefits of integrating these two complementary geospatial open standards such as leveraging OGC toolchains for X3d, providing access to rich X3d interactivity for OGC 3d Tiles or building the foundations for streaming of massive 3d geospatial datasets within X3d. We propose to test this idea by implementing a large subset of OGC 3d Tiles 1.1 functionality for X3dOM, an open source X3d browser, and to show how existing and well tested Xd features could aid such an implementation. As a result, we sketch a strategy to include OGC 3d Tilesets declaratively in a fully interactive X3d world, with accurate geospatial registration and integration with the X3d Geospatial component.

关键词： geospatial web standards X3dOM Cesium OGC web3d X3d glTF

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AN INTUITIVE MULTI-FREQUENCY FEATURE REPRESENTATION FOR SO(3)-EQUIVARIANT NETWORKS 12

AN INTUITIVE MULTI-FREQUENCY FEATURE REPRESENTATION FOR SO(3...

引用

12th international conference on Learning Representations, ICLR 2024

作者： Son, dongwon Kim, Jaehyung Son, Sanghyeon Kim, Beomjoon Department of AI KAIST Korea Republic of

the usage of 3d vision algorithms, such as shape reconstruction, remains limited because they require inputs to be at a fixed canonical rotation. Recently, a simple equivariant network, Vector Neuron (VN) (deng et al., 2021) has been proposed that can be easily used with the state-of-the-art 3d neural network (NN) architectures. However, its performance is limited because it is designed to use only three-dimensional features, which is insufficient to capture the details present in 3d data. In this paper, we introduce an equivariant feature representation for mapping a 3d point to a high-dimensional feature space. Our feature can discern multiple frequencies present in 3d data, which, as shown by Tancik et al. (2020), is the key to designing an expressive feature for 3d vision tasks. Our representation can be used as an input to VNs, and the results demonstrate that with our feature representation, VN captures more details, overcoming the limitation raised in its original paper. © 2024 12th international conference on Learning Representations, ICLR 2024. All rights reserved.

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3d-PRISE: 3d-Printed Reconfigurable Intelligent Surface Element 12

3D-PRISE: 3D-Printed Reconfigurable Intelligent Surface Elem...

引用

12th IEEE international Black Sea conference on Communications and Networking (BlackSeaCom)

作者： Tyarin, Andrey Glinskiy, Kirill Kureev, Aleksey Khorov, Evgeny Russian Acad Sci Inst Informat Transmiss Problems Moscow Russia HSE Univ Moscow Russia

ISBN: (纸本)9798350351866;9798350351859

Reconfigurable Intelligent Surface (RIS) is a key technology for enhancing the performance of 5G and beyond wireless systems. the widespread deployment of RIS requires scalable and cost-effective fabrication methods. this paper presents the design, fabrication, and experimental validation of a 3d-printed 1-bit Reconfigurable Intelligent Surface Element (3d-PRISE) that leverages the advantages of additive manufacturing. the proposed 3d-PRISE design uses 3d printing to achieve a low-cost RIS element with wide operational bandwidth. the paper provides a comprehensive overview of the 3d-printed dielectric material properties and rigorous experimental validation of the 3d-PRISE performance. the results demonstrate the feasibility of the 3d-printed RIS element, with measured phase shift ensuring the operational bandwidth of 200 MHz. this work illustrates the potential of additive manufacturing to enable scalable and cost-effective deployment of RIS in next-generation wireless systems.

关键词： 3d printing RIS antenna fabrication

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Physically-based Path Tracer using webGPU and OpenPBR 24

Physically-based Path Tracer using WebGPU and OpenPBR

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29th international ACM conference on 3d web technology (web3d)

作者： Stucki, Simon Ackermann, Philipp ZHAW Zurich Univ Appl Sci Winterthur Switzerland

ISBN: (纸本)9798400706899

this work presents a web-based, open-source path tracer for rendering physically-based 3d scenes using webGPU and the OpenPBR surface shading model. While rasterization has been the dominant real-time rendering technique on the web since webGL's introduction in 2011, it struggles with global illumination. this necessitates more complex techniques, often relying on pregenerated artifacts to attain the desired level of visual fidelity. Path tracing inherently addresses these limitations but at the cost of increased rendering time. Our work focuses on industrial applications where highly customizable products are common and real-time performance is not critical. We leverage webGPU to implement path tracing on the web, integrating the OpenPBR standard for physically-based material representation. the result is a near real-time path tracer capable of rendering high-fidelity 3d scenes directly in web browsers, eliminating the need for pregenerated assets. Our implementation demonstrates the potential of webGPU for advanced rendering techniques and opens new possibilities for web-based 3d visualization in industrial applications.

关键词： web path tracer physically-based rendering webGPU OpenPBR

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LET 2d dIFFUSION MOdEL KNOW 3d-CONSISTENCY FOR ROBUST TEXT-TO-3d GENERATION 12

LET 2D DIFFUSION MODEL KNOW 3D-CONSISTENCY FOR ROBUST TEXT-T...

引用

12th international conference on Learning Representations, ICLR 2024

作者： Seo, Junyoung Jang, Wooseok Kwak, Min-Seop Kim, Hyeonsu Ko, Jaehoon Kim, Junho Kim, Jin-Hwa Lee, Jiyoung Kim, Seungryong Korea University Korea Republic of NAVER AI Lab Korea Republic of AI Institute of Seoul National University Korea Republic of

Text-to-3d generation has shown rapid progress in recent days with the advent of score distillation sampling (SdS), a methodology of using pretrained text-to-2d diffusion models to optimize a neural radiance field (NeRF) for a zero-shot setting. However, the lack of 3d awareness in the 2d diffusion model often destabilizes previous methods from generating a plausible 3d scene. To address this issue, we propose 3dFuse, a novel framework that incorporates 3d awareness into the pretrained 2d diffusion model, enhancing the robustness and 3d consistency of score distillation-based methods. Specifically, we introduce a consistency injection module that constructs a 3d point cloud from the image generated from the text prompt and utilizes its projected depth map at a given view as a condition for the 2d diffusion model. the diffusion model, through its generative capability, robustly infers dense structure from the sparse point cloud depth map and generates a geometrically consistent and coherent 3d scene. We also introduce a new technique called semantic coding that reduces the semantic ambiguity of the text prompt for improved results. Our method can be easily adapted to various text-to-3d baselines. We experimentally demonstrate how our method notably enhances the 3d consistency of generated scenes compared to previous baselines, achieving state-of-the-art performance in geometric robustness and fidelity. the project page is available at https://***/3dFuse/. © 2024 12th international conference on Learning Representations, ICLR 2024. All rights reserved.

关键词： distillation

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Research on the Extraction of Bridge Component Indexes Based on 3d Laser Scanning technology 12

Research on the Extraction of Bridge Component Indexes Based...

引用

12th Academic conference of Geology Resource Management and Sustainable development, GRMSd 2024

作者： Wang, Lei Li, Sheng Yan, Xiaoping Zhang, Liwei Zhang, Yuyuan Ma, Li College of Civil Engineering Lanzhou Jiaotong University Gansu Lanzhou730070 China Transportation Department of Ningxia Hui Autonomous Region Ningxia Yinchuan750011 China

ISBN: (纸本)9798331314545

the quality inspection of prefabricated I-beam steel girders for traditional bridges suffers from inefficiency, low precision and long time-consuming problems. In order to efficiently and accurately control the quality of steel girder components, based on the Zhongwei Xiaheyan Yellow River Bridge Project, an automated index extraction method for prefabricated I-beam components of large bridges based on 3d laser scanning technology is proposed, in which firstly, a suitable algorithm is chosen to downsample and denoise the original point cloud data;then, based on the RANSAS algorithm, the spatially uniformly distributed components in the point cloud are subjected to planar identification and then, based on RANSAS algorithm, the spatially distributed components of point cloud are identified in plane and segmented by class aggregation, and finally, the beam height and length of I-beam are extracted from the projected slices of the point cloud;the flatness of the web of the I-beam is calculated through the plane fitting of the point cloud;and the perpendicularity of the beam is calculated through the planar equations and normal vector of the point cloud. the results show that: the maximum error of girder height and girder length is 1.16mm, the maximum error of web flatness is 0.0817mm, and the maximum error of perpendicularity is 0.0449. Based on 3d laser scanning, the automated index extraction method of prefabricated steel girders for bridges can improve the efficiency and accuracy of component inspection, reduce the cost of manpower, and provide quality control for prefabricated steel girder components of large bridges. the method provides technical support for the quality control of prefabricated steel girder members of large bridges. © 2024 Proceedings of the 12th Academic conference of Geology Resource Management and Sustainable development, GRMSd 2024. All rights reserved.

关键词： Steel beams and girders

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Progressively Streamed Real-time Preview of Captured Optical Surface Materials on the web 24

Progressively Streamed Real-time Preview of Captured Optical...

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29th international ACM conference on 3d web technology (web3d)

作者： Pflanzer, Yannick Ritz, Martin Santos, Pedro Fellner, dieter Fraunhofer Inst Comp Graph Res IGD Darmstadt Germany

ISBN: (纸本)9798400706899

Real-time delivery of captured optical surface materials has several uses, ranging from commercial showcasing of products, or product configurators, on the web, to dissemination of and research on cultural heritage by providing easy access to collections. In this work we describe two contributions: First, the development of a real-time 3d viewer for captured optical surface materials mapped to 3d geometry on the web, which is demonstrated using measured Approximate Bidirectional Texturing Function (ABTF) surface materials as an example. Second, we solve the general problem of the initial wait time for the user when viewing 3d renderings coupled with large measured material data by progressively enhancing the material details presented to the user from the start, following one of several methods proposed to define the order in which the individual surface fragments are sent. this reordering prevents the retransmission of fragments and continuously enhances the perceived increase in quality over time, making each step noticeably better in terms of perceived quality without producing visible pop-in effects or other artifacts. the benefit is the ability to visualize captured optical surface materials in their full detail without need for lossy compression, while retaining interactive loading times and thus improving user experience.

关键词： optical surface materials streaming web browser GPU real-time graphics approximate birectional texturing functions

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