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Playing for a Better Future: How Animal Avatars Influence the Attitude of Players

Proceedings of the ACM on Human-computer Interaction 2024年第CHI PLAY期8卷 1-25页

作者： Emmerich, Katharina Krekhov, Andrey Krüger, Jens Computer Graphics & Visualization Group University of Duisburg-Essen Duisburg Germany

Digital games allow us to adopt the avatar’s perspective and experience the (virtual) world from another point of view. The positive effects of such role swaps are well-documented in contexts such as combating racial or ethnic biases. Our work expands this research direction by considering animal avatars: We hypothesize that playing as an animal can improve our attitude towards wildlife and nature. In particular, this manuscript contributes a first systematic study on the effects of animal avatars on players’ implicit attitudes towards animals. Our study (N = 78) employs two commercial games featuring different animal avatars, Endling - Extinction is Forever and Bee Simulator, and compares the results of implicit association tests administered before and after gameplay. Our findings confirm significant positive effects of the games on players’ implicit associations with foxes and bees. Together with several interesting insights regarding player-avatar relationships and avatar identification, our work paves the groundwork for games contributing positively to societal change. © 2024 Copyright held by the owner/author(s). Publication rights licensed to ACM.

关键词： Invertebrates

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Importance of multi-modal data for predictive rendering

Importance of multi-modal data for predictive rendering

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2024 Eurographics Workshop on Material Appearance Modeling, MAM 2024

作者： Clausen, O. Chen, Y. Fuhrmann, A. Marroquim, R. TH Köln Computer Graphics Group Germany TU Delft Computer Graphics and Visualization Netherlands

ISBN: (纸本)9783038682646

Accurate modeling of material appearance is crucial for achieving predictive rendering. To improve reflection models, databases with measured reflection behaviors of various material and surface types are of great importance. However, current databases provide limited information, focusing either on the spectral or spatial domain and often lack microgeometry details. To address this limitation, a multi-modal database that includes reflection behavior in both spectral and spatial domains, along with comprehensive microgeometry information, is essential. Additionally, scatter information simulated with microgeometry enhances the understanding of light-matter interactions. This paper discusses the importance of multi-modal reflection data in developing more realistic and computationally efficient reflection models for predictive rendering. © 2024 The Authors.

关键词： Database systems

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On-Tube Attribute visualization for Multivariate Trajectory Data

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IEEE Transactions on visualization and computer graphics 2023年第1期29卷 1288-1298页

作者： Russig, Benjamin Grab, David Dachselt, Raimund Gumhold, Stefan Department of Computer Graphics and Visualization TU Dresden Germany TU Dresden Interactive Media Lab Germany

Stylized tubes are an established visualization primitive for line data as encountered in many scientific fields, ranging from characteristic lines in flow fields, fiber tracks reconstructed from diffusion tensor imaging, to trajectories of moving objects as they arise from cyber-physical systems in many engineering disciplines. Typical challenges include large data set sizes demanding for efficient rendering techniques as well as a large number of attributes that cannot be mapped simultaneously to the basic visual attributes provided by a tube-based visualization. In this work, we tackle both challenges with a new on-tube visualization approach. We improve recent work on high-quality GPU ray casting of Hermite spline tubes supporting ambient occlusion and extend it by a new layered procedural texturing technique. In the proposed framework, a large number of data set attributes can be mapped simultaneously to a variety of glyphs and plots that are embedded in texture space and organized in layers. Efficient rendering with minimal data transfer is achieved by generating the glyphs procedurally and drawing them in a deferred shading pass. We integrated these techniques in a prototype visualization tool that facilitates flexible mapping of data set attributes to visual tube and glyph attributes. We studied our approach on a variety of example data from different fields and found it to provide a highly adaptable and extensible toolbox to quickly craft tailor-made tube-based trajectory visualizations. © 2022 IEEE.

关键词： Trajectories

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Bridging the Distance in Education: Design and Implementation of a Synchronous, Browser-Based VR Remote Teaching Tool

Bridging the Distance in Education: Design and Implementatio...

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45th Annual Conference on European Association for computer graphics, EUROgraphics 2024

作者： Pehlić, Abdulmelik Augsdörfer, Ursula Graz University of Technology Institute of Computer Graphics and Knowledge Visualization Austria

ISBN: (纸本)9783038682387

The rapid shift to remote education has presented numerous challenges for educators and students alike. Virtual Reality (VR) has emerged as a promising solution, offering immersive and interactive learning experiences. We design and implement a synchronous, browser-based VR teaching tool. The tool is compatible with budget VR equipment and enables meaningful engagement between teachers and students in a virtual setting, as well as active participation and interaction across a range of platforms, thus solving a range of disadvantages of current approaches. © 2024 The Authors.

关键词： Virtual environments

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Combining Stable Diffusion and Object Detection for Semi-automatic Environment Decoration 41st

Combining Stable Diffusion and Object Detection for Semi-a...

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41st computer graphics International Conference, CGI 2024

作者： Drescher, Philipp Ruprecht, Irena Settgast, Volker Computer Graphics and Knowledge Visualization Graz University of Technology Graz Austria Fraunhofer Austria Research GmbH Graz Austria

ISBN: (纸本)9783031820236

Enhancing immersive environments in an efficient way is essential across various industries. However, the task of selecting and placing suitable objects to decorate 3D scenes often requires a substantial investment of time and expertise. We present a novel semi-automatic approach to accelerate this process by fusing state-of-the-art generative text-to-image models with object detection. We use a rendering of a plain 3D scene as input for Stable Diffusion and generate an image depicting a decorated version. With object detection, we identify the location, size and class of decorative elements in the generated image. Based on this information, we populate the original 3D scene with matching assets from a database. Our results demonstrate the capabilities of our proposed approach in enhancing 3D scenes through the incorporation of decorative models across different scenarios. We show that our method seamlessly integrates into existing 3D content creation tools highlighting its applicability within established workflows. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Architectural design

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miWFC - Designer Empowerment through mixed-initiative Wave Function Collapse 22

miWFC - Designer Empowerment through mixed-initiative Wave F...

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17th International Conference on the Foundations of Digital Games, FDG 2022

作者： Langendam, Thijmen Stefanus Leendert Bidarra, Rafael Computer Graphics and Visualization Delft University of Technology Netherlands

ISBN: (纸本)9781450397957

Wave Function Collapse (WFC) is a powerful generative algorithm, able to create locally-similar output based on a single example input. One of the inherent limitations of the original WFC is that it often requires users to understand its inner workings, and possibly make their own ad-hoc mods, to achieve satisfactory results. Besides distracting from your creative task, this strongly reduces the algorithm's effective usefulness to a small group of technical users. We propose miWFC, a novel mixed-initiative approach to WFC aimed at overcoming these drawbacks. Its main focus is on providing intuitive control to its users, in a way that matches their usual creative workflow. Among its main features, this approach provides (i) interactive navigation through design history, including controlled backtracking, (ii) precise manual editing of the output for direct expression of design intent, and (iii) interactive manipulation of tile weights, to tweak the global appearance of the output. We evaluated a prototype implementation of our approach among game artists and other creative professionals, and concluded that its features were largely considered useful and supportive of their creative work. © 2022 Owner/Author.

关键词： Human computer interaction

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Enhancing Fairness of Visual Attribute Predictors 16th

Enhancing Fairness of Visual Attribute Predictors

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16th Asian Conference on computer Vision, ACCV 2022

作者： Hänel, Tobias Kumar, Nishant Schlesinger, Dmitrij Li, Mengze Ünal, Erdem Eslami, Abouzar Gumhold, Stefan Computer Graphics and Visualization TU Dresden Dresden Germany Carl Zeiss Meditec AG Munich Germany

ISBN: (纸本)9783031263507

The performance of deep neural networks for image recognition tasks such as predicting a smiling face is known to degrade with under-represented classes of sensitive attributes. We address this problem by introducing fairness-aware regularization losses based on batch estimates of Demographic Parity, Equalized Odds, and a novel Intersection-over-Union measure. The experiments performed on facial and medical images from CelebA, UTKFace, and the SIIM-ISIC Melanoma classification challenge show the effectiveness of our proposed fairness losses on bias mitigation as they improve model fairness while maintaining high classification performance. To the best of our knowledge, our work is the first attempt to incorporate these types of losses in an end-to-end training scheme to mitigate biases of visual attribute predictors. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Deep neural networks

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AI Based Image Segmentation of Cultural Heritage Objects used for Multi-View Stereo 3D Reconstructions

AI Based Image Segmentation of Cultural Heritage Objects use...

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2023 Eurographics Workshop on graphics and Cultural Heritage, GCH 2023

作者： Kutlu, H. Brucker, F. Kallendrusch, B. Santos, P. Fellner, D.W. TU Darmstadt & Fraunhofer IGD Germany Graz University of Technology Institute of Computer Graphics and Knowledge Visualization Austria

ISBN: (纸本)9783038682172

Image segmentation (or masking) finds a very useful use case within 3D reconstruction of cultural heritage objects. The 3D reconstructions can be accelerated, reconstructing the object without any background noise. Conventional segmentation methods can calculate erroneous masks for certain objects and environments, which can lead to errors within the reconstruction: Parts of the 3D reconstruction may be missing or are incorrectly reconstructed, which contradicts adequate archiving. The automated iterative Multi-View Stereo (MVS) scanning process makes it necessary to obtain masks that reconstruct the object in the best possible way, regardless of the environment, the stabilizing mount, the color of the background and the object. In addition, it should not be necessary to tweak the best possible parameters for conventional masking procedures and to create masks manually. State-of-the-art artificial intelligence (AI) segmentation networks will be trained and applied to the MVS scans to verify the behavior of the associated 3D reconstructions and the automated iterative scanning process. In addition, a comparison between different AI segmentation networks and a comparison between conventional masking methods and AI segmentation networks is performed. © ISVR,2023 *** rights reserved

关键词： Image segmentation

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Towards Crowd-Sourced Collaborative Fragment Matching

Towards Crowd-Sourced Collaborative Fragment Matching

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2023 Eurographics Workshop on graphics and Cultural Heritage, GCH 2023

作者： Houska, P. Kloiber, S. Masur, A. Lengauer, S. Karl, S. Preiner, R. Graz University of Technology Institute of Computer Graphics and Knowledge Visualization Austria University of Graz Institute of Classics Austria

ISBN: (纸本)9783038682172

Many artifacts of our archaeological heritage are preserved only in fragments. The reassembly of these parts to their original form is therefore an essential task for archaeologists. Our project aims at incorporating the intellect of many participants from the broad public in the solution of this complex task. To this end, we develop a web-based 3D environment, in which users can interactively and collaboratively reassemble virtual fragments of real-world artifacts, supported by computer-aided methods. Our primary research focus lies on identifying how to best design and setup such a system in order to maximize the collaboration efficiency. By participating in this open reassembly process, users can gain valuable insight into the archaeological task, thus raising awareness for our common cultural heritage in a multitude of people. © ISVR,2023 *** rights reserved

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Holonomy: A Virtual Reality Exploration of Hyperbolic Geometry 24

Holonomy: A Virtual Reality Exploration of Hyperbolic Geomet...

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Proceedings of the 29th International ACM Conference on 3D Web Technology

作者： Martin Skrodzki Scott Jochems Joris Rijsdijk Ravi Snellenberg Rafael Bidarra Computer Graphics and Visualization TU Delft Netherlands TU Delft Netherlands

ISBN: (纸本)9798400706899

Holonomy is a virtual environment based on the mathematical concept of hyperbolic geometry. Unlike other environments, Holonomy allows users to seamlessly explore an infinite hyperbolic space by physically walking. They use their body as the controller, eliminating the need for teleportation or other artificial VR locomotion methods. This paper discusses the development of Holonomy, highlighting the technical challenges faced and overcome during its creation, including rendering complex hyperbolic environments, populating the space with objects, and implementing algorithms for finding shortest paths in the underlying non-Euclidean geometry. Furthermore, we present a proof-of-concept implementation in the form of a VR navigation game and some preliminary learning outcomes from this implementation.

关键词： Embodied Control

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