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检索条件"任意字段=International Conference on Computer Graphics, Imaging and Visualization"

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MoPeDT: A Modular Head-Mounted Display Toolkit to Conduct Peripheral Vision Research 30

MoPeDT: A Modular Head-Mounted Display Toolkit to Conduct Pe...

引用

30th IEEE conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Albrecht, Matthias Asslander, Lorenz Reiterer, Harald Streuber, Stephan Univ Konstanz Constance Germany Coburg Univ Appl Sci & Arts Coburg Germany

ISBN: (纸本)9798350348156

Peripheral vision plays a significant role in human perception and orientation. However, its relevance for human-computer interaction, especially head-mounted displays, has not been fully explored yet. In the past, a few specialized appliances were developed to display visual cues in the periphery, each designed for a single specific use case only. A multi-purpose headset to exclusively augment peripheral vision did not exist yet. We introduce MoPeDT: Modular Peripheral Display Toolkit, a freely available, flexible, reconfigurable, and extendable headset to conduct peripheral vision research. MoPeDT can be built with a 3D printer and off-the-shelf components. It features multiple spatially configurable near-eye display modules and full 3D tracking inside and outside the lab. With our system, researchers and designers may easily develop and prototype novel peripheral vision interaction and visualization techniques. We demonstrate the versatility of our headset with several possible applications for spatial awareness, balance, interaction, feedback, and notifications. We conducted a small study to evaluate the usability of the system. We found that participants were largely not irritated by the peripheral cues, but the headset's comfort could be further improved. We also evaluated our system based on established heuristics for human-computer interaction toolkits to show how MoPeDT adapts to changing requirements, lowers the entry barrier for peripheral vision research, and facilitates expressive power in the combination of modular building blocks.

关键词： Human-centered computing Human computer interaction (HCI) Interaction paradigms Mixed / augmented reality Human-centered computing Human computer interaction (HCI) Interactive systems and tools User interface toolkits

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TextHair3D: Text-driven 3D Hair Editing with Generative Priors

TextHair3D: Text-driven 3D Hair Editing with Generative Prio...

引用

international conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Xiaoxue Li Huilong Pi Yunchuan Qin Ruihui Li Kenli Li College of Computer Science and Electronic Engineering Hunan University China

ISBN: (数字)9798350368741

ISBN: (纸本)9798350368758

Text-driven hair editing on 3D heads is a challenging problem in computer vision and graphics. In this paper, we propose TextHair3D, a NeRF-based text-driven 3D hair editing method that uses 3D perception to generate priors, edit hair attributes from user-provided text, and preserve facial features. TextHair3D uses the Contrastive Language-Image Pre-training (CLIP) model to encode textual conditions. To address the complexity and roughness of local editing, we design a combined conditional mapping module to map image and text conditions into latent space for learning generative priors. This enables high-quality, photo-realistic hair editing and 3D head reproduction. Extensive experiments show Tex-tHair3D’s superiority in visual realism and attribute accuracy.

关键词： Hair visualization Three-dimensional displays Head Space mapping Signal processing Rendering (computer graphics) Neural radiance field Speech processing Facial features

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Real-time open field cattle monitoring by drone: A 3D visualization approach 15

Real-time open field cattle monitoring by drone: A 3D visual...

引用

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： Yang, Fei Zhu, Ningbo Pei, Shuonan Cheng, Irene University of Alberta Computing Science Department Multimedia Program 2-32 Athabasca Hall University of Alberta EdmontonABT6G 2E8 Canada

ISBN: (纸本)9789898704320

Monitoring a large herd across an open field is challenging in the agricultural industry but is essential for the welfare of cattle. With the advancement of Unmanned Aerial Vehicle (UAV) technology, drones are now commonly used for surveillance. In this work, we apply UAV technology and drone-captured videos to monitor cattle in open pastures. We use cow headcount as a use case. Although cattle headcount in a confined indoor environment has been studied extensively, our contribution lies in developing a framework that can localize the cows in the video and track their movements on a 3D canvas in real-time. By using a 3D visualization approach, we expect to resolve many of the occlusion issues by guiding the drone operator to navigate the drone to discover important information. We use a pre-trained Mask R-CNN classification model to detect and track cows in the video. We then use Matplotlib 3D to create the 3D canvas and display the relative cow positions. Our real-time 3D cow visualization framework allows tracking herds remotely, saving time and labor for on-site manual herding, as well as providing better global monitoring of the herd. The complete implementation can be found in our publicly available GitHub link upon request. © 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： Object detection

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A Spherical Light Field Database for Immersive Telecommunication and Telepresence Applications

A Spherical Light Field Database for Immersive Telecommunica...

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international Workshop on Quality of Multimedia Experience, QoMEx

作者： Emin Zerman Manu Gond Soheib Takhtardeshir Roger Olsson Mårten Sjöström Department of Computer and Electrical Engineering Mid Sweden University Sundsvall Sweden

ISBN: (数字)9798350361582

ISBN: (纸本)9798350361599

Immersive imaging technologies provide an enhanced user experience for visual applications and are getting ready for commonplace use by the industry and the general populace. In particular, light field is a promising technology that enables the capture and reproduction of real light rays from the scene, which can provide a backbone for immersive telecommunication and telepresence applications. Nevertheless, there are still many challenges in transmitting and reproducing light field data. This paper proposes a spherical light field dataset that can be used as a foundation for developing telepresence applications. The Spherical Light Field Database (SLFDB) consists of a light field of 60 views captured with an omnidirectional camera in 20 scenes. To show the usefulness of the proposed database, we provide two use cases: compression and viewpoint estimation. The initial results validate that the publicly available SLFDB will benefit the scientific community.

关键词： Industries visualization Telepresence Databases Lighting Rendering (computer graphics) Light fields

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Patient Dashboards of Electronic Health Record Data to Support Clinical Care: A Systematic Review 11

Patient Dashboards of Electronic Health Record Data to Suppo...

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11th IEEE international conference on Healthcare Informatics, ICHI 2023

作者： Ramalho, Bárbara Gama, Sandra Nunes, Francisco Fraunhofer Portugal Aicos Human-Centred Design Porto Portugal University of Lisbon Human Lab Graphics and Interaction INESC-ID Lisbon Portugal

ISBN: (纸本)9798350302639

Visualisations in Electronic Health Records (EHRs) are crucial for clinical care. Since clinicians need to quickly diagnose and treat their patients, having appropriate ways to visualise patients' characteristics and issues documented in the EHR, can be instrumental. However, the existing literature has not yet summarised the characteristics and lessons learned from the studies on patient dashboards for clinical care. Our review analysed patient dashboards, that visualised EHR data to support clinical care, and which were evaluated with end-users. We read papers from Human-computer Interaction, Information Visualisation, and Medical Informatics, focusing on the user interfaces and the end-user evaluation results. From a set of 3545 articles, we selected 30 studies, which were analysed using Thematic Analysis. Results provide an understanding of the patient dashboard designs, the visualisation techniques employed, the data represented, as well as the lessons learned from this body work;which should contribute to future designs. © 2023 IEEE.

关键词： Data visualization

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Adaptive Threshold Determination for Temporal Sampling during Smart In-Situ visualization

Adaptive Threshold Determination for Temporal Sampling durin...

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IEEE international conference on High Performance Computing Workshops (HiPCW)

作者： Kazuya Adachi Taisei Matsushima Naohisa Sakamoto Jorji Nonaka Chongke Bi Kobe University Kobe Japan RIKEN R-CCS Kobe Japan Tianjin University Tianjin China

ISBN: (数字)9798331509118

ISBN: (纸本)9798331509125

In-Situ visualization [1] has gradually been recognized as a feasible solution to minimize the ever-increasing I/O cost of large-scale simulations as the simulations move to the extreme scale. In this approach, visualization processing is performed while the simulation result is still in the main memory, thus drastically reducing the amount of data output to persistent storage for later offline visual analysis. This approach has matured for more than a decade, and there are currently several open-source tools and libraries, such as KVS, Catalyst, LibSim, Ascent, and SENSEI, as well as commercial solutions, such as Kombyne. Although they have different features and specific strengths, they have in common the support for image-based [2] or video-based [3] in-situ visualization methods to minimize the notorious lack of interactivity in the in-situ visualization. In these methods, a set of rendering images from different viewpoints (camera positions) are generated at every visualization timestep to enable interactive viewpoint changing during subsequent offline visual analysis.

关键词： visualization Costs Simulation High performance computing conferences Catalysts Memory management Data visualization Rendering (computer graphics) Libraries

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Enhancing Breast Cancer Detection Using A Transformer-Based Model

Enhancing Breast Cancer Detection Using A Transformer-Based ...

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2024 international conference on Information Science and Communications Technologies, ICISCT 2024

作者： Sharma, Shubhi Singh, Yeshwant School of Computer Science Upes Dehradun India

ISBN: (纸本)9798331527921

Breast cancer is a very common and one of the leading causes of mortality and illness worldwide. Early detection of breast cancer is critical, increasing the chances of long-term survival and successful treatment. Mammography is a primary method for early detection and a widely used imaging technique employing low-dose X-rays. Interpreting mammograms remains challenging due to the complex nature of malignancy anomalies. This advanced imaging technique has revolutionized the screening of breast cancer by facilitating the better visualization of breast tissues. The main challenge that radiologists face in reading mammographic patterns is too many false positives and negatives, which leads to unnecessary biopsies, anxiety among patients, and missing the correct diagnosis. In current times, artificial intelligence (AI) has shown significant success in the medical imaging field. In particular, deep learning (DL) models have outperformed traditional image processing techniques. Allowing accurate and automated predictions, these models are trained on massive datasets to understand the different characteristics of tumors. In this work, a different DL-based model is deployed and developed to detect breast cancer using mammogram images. Also, several DL approaches are discussed, mentioning their benefits and limitations concerning mammography. This work thoroughly analyzes the literature and uses techniques and different evaluation methods to analyze the model's performance across different datasets. © 2024 IEEE.

关键词： Mammography

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RemoteTouch: Enhancing Immersive 3D Video Communication with Hand Touch 30

RemoteTouch: Enhancing Immersive 3D Video Communication with...

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30th IEEE conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Zhang, Yizhong Li, Zhiqi Xu, Sicheng Li, Chong Yang, Jiaolong Tong, Xin Guo, Baining Microsoft Res Asia Beijing Peoples R China Zhejiang Univ Hangzhou Peoples R China MSRA Beijing Peoples R China

ISBN: (纸本)9798350348156

Recent research advance has significantly improved the visual realism of immersive 3D video communication. In this work we present a method to further enhance this immersive experience by adding the hand touch capability ("remote hand clapping"). In our system, each meeting participant sits in front of a large screen with haptic feedback. The local participant can reach his hand out to the screen and perform hand clapping with the remote participant as if the two participants were only separated by a virtual glass. A key challenge in emulating the remote hand touch is the realistic rendering of the participant's hand and arm as the hand touches the screen. When the hand is very close to the screen, the RGBD data required for realistic rendering is no longer available. To tackle this challenge, we present a dual representation of the user's hand. Our dual representation not only preserves the high-quality rendering usually found in recent image-based rendering systems but also allows the hand to reach to the screen. This is possible because the dual representation includes both an image-based model and a 3D geometry-based model, with the latter driven by a hand skeleton tracked by a side view camera. In addition, the dual representation provides a distance-based fusion of the image-based and 3D geometry-based models as the hand moves closer to the screen. The result is that the image-based and 3D geometry-based models mutually enhance each other, leading to realistic and seamless rendering. Our experiments demonstrate that our method provides consistent hand contact experience between remote users and improves the immersive experience of 3D video communication.

关键词： Human-centered computing Collaborative and social computing Computing methodologies computer graphics graphics systems and interfaces Virtual reality

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Redirected Walking Based on Historical User Walking Data 30

Redirected Walking Based on Historical User Walking Data

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30th IEEE conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Fan, Cheng-Wei Xu, Sen-Zhe Yu, Peng Zhang, Fang-Lue Zhang, Song-Hai Tsinghua Univ Beijing Peoples R China Victoria Univ Wellingtong Wellington New Zealand Tsinghua Univ BNRist Beijing Peoples R China

ISBN: (纸本)9798350348156

With redirected walking (RDW) technology, people can explore large virtual worlds in smaller physical spaces. RDW controls the trajectory of the user's walking in the physical space through subtle adjustments, so as to minimize the collision between the user and the physical space. Previous predictive algorithms place constraints on the user's path according to the spatial layouts of the virtual environment and work well when applicable, while reactive algorithms are more general for scenarios involving free exploration or unconstrained movements. However, even in relatively free environments, we can predict the user's walking to a certain extent by analyzing the user's historical walking data, which can help the decision-making of reactive algorithms. This paper proposes a novel RDW method that improves the effect of real-time unrestricted RDW by analyzing and utilizing the user's historical walking data. In this method, the physical space is discretized by considering the user's location and orientation in the physical space. Using the weighted directed graph obtained from the user's historical walking data, we dynamically update the scores of different reachable poses in the physical space during the user's walking. We rank the scores and choose the optimal target position and orientation to guide the user to the best pose. Since simulation experiments have been shown to be effective in many previous RDW studies, we also provide a method to simulate user walking trajectories and generate a dataset. Experiments show that our method outperforms multiple state-of-the-art methods in various environments of different sizes and spatial layouts.

关键词： Computing methodologies computer graphics graphics systems and interfaces Virtual reality

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Accelerating Transfer Function Update for Distance Map based Volume Rendering

Accelerating Transfer Function Update for Distance Map based...

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international conference on Visualisation, VIS

作者： Michael Rauter Lukas Zimmermann Markus Zeilinger Competence Center for Preclinical Imaging and Biomedical Engineering Faculty of Health University of Applied Sciences Wiener Neustadt Austria Department of Radiation Oncology Medical University of Vienna Austria

ISBN: (数字)9798350354850

ISBN: (纸本)9798350354867

Direct volume rendering using ray-casting is widely used in practice. By using GPUs and applying acceleration techniques as empty space skipping, high frame rates are possible on modern hardware. This enables performance-critical use-cases such as virtual reality volume rendering. The currently fastest known technique uses volumetric distance maps to skip empty sections of the volume during ray-casting but requires the distance map to be updated per transfer function change. In this paper, we demonstrate a technique for subdividing the volume intensity range into partitions and deriving what we call partitioned distance maps. These can be used to accelerate the distance map computation for a newly changed transfer function by a factor up to 30. This allows the currently fastest known empty space skipping approach to be used while maintaining high frame rates even when the transfer function is changed frequently.

关键词： Visual analytics Transfer functions graphics processing units Virtual reality Rendering (computer graphics) Hardware

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