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检索条件"任意字段=Conference on 3D Virtual Reconstruction and Visualization of Complex Architectures"

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Towards Multi-Angle Multispectral Optical 3d Porometry and Lens-Less Porometry of Civil Engineering Composites and Geocomposites Including Biodegradable Ones 7

Towards Multi-Angle Multispectral Optical 3D Porometry and L...

引用

7th International Technical conference on Frontiers of Hydraulic and Civil Engineering Technology, HCET 2022

作者： Grigorieva, Elena Gradov, Oleg Gradova, Margaret Maklakova, Irina IBCP RAS Kosygina Str. 4 Moscow119991 Russia FRC CP RAS Kosygina Str. 4 Moscow119991 Russia

ISBN: (纸本)9781643683546

In this work we demonstrate the images of multi-angle porometry of civil engineering composites with the static pores. We also demonstrate an example of the application of multi-angle scanning methods where each pore visualization angle corresponds to the certain time moment. The light source can be either incoherent or coherent, which determines the data interpretation principles and data processing algorithms. The light detector can be either optical microscopic (with lenses) or lens-less, that is, either a microscope with an objective or a lens-less one, especially a holographic lens-less microscope. The latter is by definition compatible with multi-angle microporometry. The data on reconstruction of the surface texture of a complex pore using an incoherent light source and the Sobel-Feldman operator (Stanford Artificial Intelligence Laboratory (SAIL)) is presented. © 2022 The authors and IOS Press.

关键词： Textures

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Shape-prior Free Space-time Neural Radiance Field for 4d Semantic reconstruction of dynamic Scene from Sparse-View RGB Videos

Shape-prior Free Space-time Neural Radiance Field for 4D Sem...

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IEEE/RSJ International conference on Intelligent Robots and Systems (IROS)

作者： Sandika Biswas Biplab Banerjee Hamid Rezatofighi Indian Institute of Technology Bombay Monash University Faculty of Information Technology Monash University

ISBN: (数字)9798350377705

ISBN: (纸本)9798350377712

Many applications in Augmented/virtual Reality or robotics require precise geometry modeling of individual elements in a dynamic scene under a sparse-view camera setup, without any prior information about their semantic labels or shapes. In our research, we introduce a 3d shape prior-free Neural Radiance Field-based technique for detailed geometry reconstruction under human-object interactions, offering an explicit surface reconstruction with semantic labels for reconstructed geometry. Our approach harnesses the capabilities of an Invertible Neural Network to learn a deformation function that effectively connects local (current-frame input) and canonical spaces for each of the components under motion. The deformation process is guided by temporal constraints from multi-frame, facilitating the precise reconstruction of the complex interactions between humans and objects. Our experimental evaluations highlight the effectiveness of our framework, demonstrating its ability to accurately represent both the comprehensive object-compositional scene and individual components over state-of-the-art methods, under complex interactions between the scene entities. This research is deemed to mark a significant stride in semantic 3d geometry modeling within dynamic interactive environments, relying solely on sparse multi-view RGB data.

关键词： Geometry Training Three-dimensional displays Shape deformation Semantics Neural radiance field Image reconstruction Surface treatment Videos

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On Provisioning Procedural GeometryWorkloads on Edge architectures 17

On Provisioning Procedural GeometryWorkloads on Edge Archite...

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17th International conference on Web Information Systems and Technologies (WEBIST)

作者： Murturi, Ilir Jia, Chao Kerbl, Bernhard Wimmer, Michael dustdar, Schahram Tsigkanos, Christos TU Wien Distributed Syst Grp Vienna Austria TU Wien Res Unit Comp Graph Vienna Austria

ISBN: (纸本)9789897585364

Contemporary applications such as those within Augmented or virtual Reality (AR/VR) pose challenges for software architectures supporting them, which have to adhere to stringent latency, data transmission, and performance requirements. This manifests in processing 3d models, whose 3d contents are increasingly generated procedurally rather than explicitly, resulting in computational workloads (i.e., perceived as Procedural GeometryWorkloads) with particular characteristics and resource requirements. Traditionally, executing such workloads takes place in resource-rich environments such as the cloud. However, the massive amount of data transfer, heterogeneous devices, and networks involved affect latency, which in turn causes low-quality visualization in user-facing applications (e.g., AR/VR). To overcome such challenges, processing elements available close to end users can be leveraged to generate 3d models instead, and as such the edge emerges as a central architectural entity. This paper describes such procedural geometry workloads, their particular characteristics, and challenges to execute them on heterogeneous devices. Furthermore, we propose an architecture capable of provisioning procedural geometry workloads in edge scenarios.

关键词： Edge architectures Computational Workloads Edge-cloud Continuum

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3d Face reconstruction from hard blended edges 15

3D Face reconstruction from hard blended edges

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International conference on Computer Graphics, visualization, Computer Vision and Image Processing 2021, CGVCVIP 2021, Connected Smart Cities 2021, CSC 2021 and Big data Analytics, data Mining and Computational Intelligence 2021, BIGdACI 2021 - Held at the 15th Multi-conference on Computer Science and Information Systems, MCCSIS 2021

作者： ding, Yueming Mok, P.Y. The Hong Kong Polytechnic University Inst. Textiles and Clothing Hong Kong Laboratory for Artificial Intelligence in Design Hong Kong

ISBN: (纸本)9789898704320

3d face reconstruction from 2d images is an important research topic because it supports a wide range of applications, such as face recognition, animations, games, and AR/VR systems. 3d face reconstruction from contour features is a challenging task, because traditional edge detection algorithms produce a lot of noises, which are prone to making the reconstruction model trapped in a local optimum or even being degraded. With the development of deep learning, a lot of researcher introduce neural network into contour detection, which can extract relatively clear contours compared with previous methods. In this article, we employ a hard blended face contour feature from neural network and canny edge extractor for face reconstruction. Our method not only improves the 3d face model reconstruction accuracy on synthesis images, but performs more accurately and robustly on in-the-wild images under blurriness, makeup, occlusion and ill-illumination conditions. © 2021 International conference on Computer Graphics, visualization, Computer Vision and Image Processing 2021, CGVCVIP 2021, Connected Smart Cities 2021, CSC 2021 and Big data Analytics, data Mining and Computational Intelligence 2021, BIGdACI 2021 - Held at the 15th Multi-conference on Computer Science and Information Systems, MCCSIS 2021. All rights reserved.

关键词： Image enhancement

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deep Active Surface Models

Deep Active Surface Models

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IEEE/CVF conference on Computer Vision and Pattern Recognition (CVPR)

作者： Wickramasinghe, Udaranga Fua, Pascal Knott, Graham Ecole Polytech Fed Lausanne Comp Vis Lab Lausanne Switzerland Ecole Polytech Fed Lausanne BioEM Lab Lausanne Switzerland

ISBN: (纸本)9781665445092

Active Surface Models have a long history of being useful to model complex 3d surfaces. But only Active Contours have been used in conjunction with deep networks, and then only to produce the data term as well as meta-parameter maps controlling them. In this paper, we advocate a much tighter integration. We introduce layers that implement them that can be integrated seamlessly into Graph Convolutional Networks to enforce sophisticated smoothness priors at an acceptable computational cost. We will show that the resulting deep Active Surface Models outperform equivalent architectures that use traditional regularization loss terms to impose smoothness priors for 3d surface reconstruction from 2d images and for 3d volume segmentation.

关键词： Measurement Surface reconstruction Solid modeling Image segmentation Three-dimensional displays Smoothing methods Computational modeling

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A Large-Scale Indoor Layout reconstruction and Localization System for Spatial-Aware Mobile AR Applications 4

A Large-Scale Indoor Layout Reconstruction and Localization ...

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4th IEEE International conference on Artificial Intelligence and virtual Reality (AIVR)

作者： Hsiao, Kai-Wen Su, Jheng-Wei Hung, Yu-Chih Chen, Kuo-Wei Yao, Chih-Yuan Chu, Hung-Kuo Natl Tsing Hua Univ Comp Sci Hsinchu Taiwan Natl Taiwan Univ Sci & Technol Comp Sci & Informat Engn Taipei Taiwan

ISBN: (纸本)9781665432252

Augmented reality (AR) has renewed the perspective of how people see and process information in daily life by blending the real world with rich and interactive virtual contents. However, restricted by the limited computation resources of mobile devices, most existing AR applications can process only local features in front of the camera. Such limitation severely hinders the progress of inventing more practical AR applications that demand more complex interaction. To break this barrier, we introduce a novel spatial-aware AR application framework for the indoor environment in this work. The core techniques include a large-scale indoor layout reconstruction system that can reconstruct the 3d layout of an entire floor plan from few panoramas taken via commodity cameras, and an online localization system that can accurately align the virtual 3d layout with real world environment in real time. By incorporating the perception of global scene structure with the AR interaction pipeline, our system can support more sophisticated applications with the complex interplay among the users, virtual objects and the real world scene. We tested our framework on a large-scale indoor environment and demonstrate its effectiveness on practical AR applications, a first-person-shooting game and an indoor navigation.

关键词： augmented reality indoor layout reconstruction mobile application neural network panoramic image

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Into 3d-Reconstructed Apparel over virtual Try-On with virtual Reality

Into 3D-Reconstructed Apparel over Virtual Try-On with Virtu...

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IEEE International conference on Consumer Electronics-Taiwan (ICCE-TW)

作者： Surasachai doungtap Jirayu Petchhan Varinya Phanichraksaphong Jenq-Haur Wang International Graduate Program of Electrical Engineering and Computer Science Dept. of Electrical Engineering National Taiwan University of Science & Technology Taiwan R. O. C. Department of Computer Science and Information Engineering National Taipei University of Technology Taiwan R. O. C.

virtualization technologies are still growing bigger and faster. despite the greatness of its advancement, the costume industry is still very accessible when it comes to real trials. Off-the-shelf stuff are inadequate details for the desired individual to assess its in-depth utility for each garment trying on for a second, including custom stuff are much harder to try out right away. To this end, 2d image-based 3d reconstruction inclusive of touchable-virtualized space is accessible easier to stuff details for mans' decision making in purchasing. We establish the overall end-to-end pipeline from reconstruction until visualization for one instance to be triable on its stuff for a moment. As an expectation, our proposed approach can bring objects into the experimental area and use them immediately without any obstacle.

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Volumetric disentanglement for 3d Scene Manipulation

Volumetric Disentanglement for 3D Scene Manipulation

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IEEE Workshop on Applications of Computer Vision (WACV)

作者： Sagie Benaim Frederik Warburg Peter Ebert Christensen Serge Belongie University of Copenhagen Technical University of Denmark

Recently, advances in differential volumetric rendering enabled significant breakthroughs in the photo-realistic and fine-detailed reconstruction of complex 3d scenes, which is key for many virtual reality applications. However, in the context of augmented reality, one may also wish to effect semantic manipulations or augmentations of objects within a scene. To this end, we propose a volumetric framework for (i) disentangling or separating, the volumetric representation of a given foreground object from the background, and (ii) semantically manipulating the foreground object, as well as the background. Our framework takes as input a set of 2d masks specifying the desired foreground object for training views, together with the associated 2d views and poses, and produces a foreground-background disentanglement that respects the surrounding illumination, reflections, and partial occlusions, which can be applied to both training and novel views. Our method enables the separate control of pixel color and depth as well as 3d similarity transformations of both the foreground and background objects. We subsequently demonstrate our framework’s applicability on several downstream manipulation tasks, going beyond the placement and movement of foreground objects. These tasks include object camouflage, non-negative 3d object in-painting, 3d object translation, 3d object inpainting, and 3d text-based object manipulation. The project webpage is provided in https://***/volumetric-disentanglement/.

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VoxelCache: Accelerating Online Mapping in Robotics and 3d reconstruction Tasks 22

VoxelCache: Accelerating Online Mapping in Robotics and 3D R...

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Proceedings of the International conference on Parallel architectures and Compilation Techniques

作者： Sankeerth durvasula Raymond Kiguru Samarth Mathur Jenny Xu Jimmy Lin Nandita Vijaykumar University of Toronto PES Institute of Technology

ISBN: (纸本)9781450398688

Real-time 3d mapping is a critical component in many important applications today including robotics, AR/VR, and 3d visualization. 3d mapping involves continuously fusing depth maps obtained from depth sensors in phones, robots, and autonomous vehicles into a single 3d representative model of the scene. Many important applications, e.g., global path planning and trajectory generation in micro aerial vehicles, require the construction of large maps at high resolutions. In this work, we identify mapping, i.e., construction and updates of 3d maps to be a critical bottleneck in these applications. The memory required and access times of these maps limit the size of the environment and the resolution with which the environment can be feasibly mapped, especially in resource constrained environments such as autonomous robot platforms and portable devices. To address this challenge, we propose VoxelCache: a hardware-software technique to accelerate map data access times in 3d mapping applications. We observe that mapping applications typically access voxels in the map that are spatially co-located to each other. We leverage this temporal locality in voxel accesses to cache indices to blocks of voxels to enable quick lookup and avoid expensive access times. We evaluate VoxelCache on popularly used mapping and reconstruction applications on both GPUs and CPUs. We demonstrate an average speedup of 1.47X (up to 1.66X) and 1.79X (up to 1.91X) on CPUs and GPUs respectively.

关键词： hardware acceleration mapping reconstruction caching SLAM

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digital Historical Pavia: 3d Modeling in Educational Context for Cultural Heritage Promotion 3rd

Digital Historical Pavia: 3D Modeling in Educational Contex...

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3rd Florence Heri-Tech International conference, Florence Heri-Tech 2022

作者： Cantoni, Virginio dondi, Piercarlo Gullotti, Alessio Lombardi, Luca Mosconi, Mauro Nour, Roberto Setti, Alessandra Department of Electrical Computer and Biomedical Engineering University of Pavia Via A. Ferrata 5 Pavia27100 Italy

ISBN: (纸本)9783031203015

The "digital Historical Pavia" project aims to prove the value of digital media technologies for enhancing promotion and accessibility of Cultural Heritage, while teaching students the basics of computer graphics. It integrates technology into attractive and meaningful presentations of local cultural assets of the 14 th – 16 th century when the city of Pavia experienced several transformations. This paper summarizes the main results of the project showing the outcomes of three case studies: (i) the setup of an educational and experiential room for the exhibition "1525–2015. Pavia, the Battle, the Future. Nothing was the same again";(ii) the virtual reconstruction of the city of Pavia in the Renaissance, including a timelapse of the urban evolution of the city during the 16 th century;(iii) the 3d modeling of the Ark of St. Augustine, a complex funerary monument of the second half of the 14 th century, and the development of a related online serious game. All the 3d models were created by students of the master’s degree in Computer Engineering of the University of Pavia, showing the potentiality of an experiential learning approach for teaching computer science and computer graphics concepts. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： 3d modeling

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