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AvatarGo: Plug and Play self-avatars for VR AvatarGo:即插即用的虚拟现实自我化身
J. L. Ponton, E. Monclús, N. Pelechano
The use of self-avatars in a VR application can enhance presence and embodiment which leads to a better user experience. In collaborative VR it also facilitates non-verbal communication. Currently it is possible to track a few body parts with cheap trackers and then apply IK methods to animate a character. However, the correspondence between trackers and avatar joints is typically fixed ad-hoc, which is enough to animate the avatar, but causes noticeable mismatches between the user's body pose and the avatar. In this paper we present a fast and easy to set up system to compute exact offset values, unique for each user, which leads to improvements in avatar movement. Our user study shows that the Sense of Embodiment increased significantly when using exact offsets as opposed to fixed ones. We also allowed the users to see a semitransparent avatar overlaid with their real body to objectively evaluate the quality of the avatar movement with our technique.
在VR应用程序中使用自我化身可以增强存在感和化身,从而带来更好的用户体验。在协作式虚拟现实中,它还促进了非语言交流。目前,使用廉价的跟踪器跟踪一些身体部位,然后应用IK方法来动画角色是可能的。然而,追踪器和角色关节之间的对应关系通常是固定的,这足以让角色动画化,但会导致用户的身体姿势和角色之间明显的不匹配。在本文中,我们提出了一个快速且易于设置的系统来计算精确的偏移值,每个用户都是唯一的,这导致了虚拟角色运动的改进。我们的用户研究表明,当使用精确偏移量而不是固定偏移量时,体现感显着增加。我们还允许用户看到覆盖在他们真实身体上的半透明化身,用我们的技术客观地评估化身的运动质量。
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引用次数: 7
Reconstructing 3D Face of Infants in Social Interactions Using Morphable Models of Non-Infants. 利用非婴儿的可变形模型重建社会互动中婴儿的三维面部
E Sariyanidi, C J Zampella, M N Drye, M L Fecher, G Megginson, L Soskey Cubit, R T Schultz, W Guthrie, B Tunc

3D morphable models (3DMMs) simultaneously reconstruct facial morphology, expression and pose from 2D images, and thus could be an invaluable tool for capturing and characterizing the face and facial behavior in early childhood. However, 3DMM fitting on infants is a largely unexplored problem. All publicly available 3DMMs are developed for adults, and it is unclear if and to what extent they can be used on videos of infants. In this paper, we compare five state-of-the-art 3DMM fitting methods on data from naturalistic infant-caregiver interactions. Results suggest that it is possible to produce consistent and subject-specific reconstructions of 3D shape identity from multiple frames, but not from a single frame. Qualitative evaluation highlights that facial regions with high texture variation, such as eyes, brows and mouth, are captured with higher accuracy compared to the rest of the face. Thus, even though a 3DMM developed for adults has significant limitations when reconstructing the morphology of the entire facial region of infants, applications that involve analysis of facial behavior can be feasible. Our encouraging results, combined with the unique ability of 3DMMs to disentangle two major sources of noise for expression analysis (i.e., identity bias and pose variations), motivate future research on using 3DMMs to measure the facial behavior of infants.

三维可变形模型(3DMM)可同时从二维图像中重建面部形态、表情和姿势,因此是捕捉和描述幼儿期面部和面部行为的宝贵工具。然而,3DMM 在婴儿身上的拟合在很大程度上是一个尚未探索的问题。所有公开的 3DMM 都是针对成人开发的,目前还不清楚它们是否以及在多大程度上可用于婴儿视频。在本文中,我们比较了五种最先进的 3DMM 拟合方法,并对婴儿与照顾者之间的自然互动数据进行了分析。结果表明,可以通过多帧而不是单帧生成一致且针对特定对象的三维形状识别重建。定性评估结果表明,与面部其他部分相比,眼睛、眉毛和嘴巴等纹理变化较大的面部区域的捕捉精度更高。因此,尽管为成人开发的 3DMM 在重建婴儿整个面部区域的形态时有很大的局限性,但涉及面部行为分析的应用是可行的。我们的研究结果令人鼓舞,再加上 3DMM 在表情分析中分离两个主要噪声源(即身份偏差和姿势变化)的独特能力,激发了未来使用 3DMM 测量婴儿面部行为的研究。
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引用次数: 0
Dyani White Hawk: Speaking to Relatives, Kemper Museum of Contemporary Art, Kansas City, MO, 18 February–16 May 2021 “Dyani White Hawk: Speaking to Relatives”,肯珀当代艺术博物馆,堪萨斯城,密苏里州,2021年2月18日至5月16日
Glynnis Stevenson
This review looks at the Kemper Museum of Contemporary Art’s tribute to the past decade of artwork by Dyani White Hawk, a curator and multimedia artist of Sičáŋǧu Lakota, German and Welsh ancestry. The exhibition entrance sits directly across from Sean Scully’s The Moroccan (1984), positioning White Hawk’s work as a commentary on the Euro-American appropriation of non-white aesthetics. See for example, her canvas Untitled (coral, turquoise, and yellow) (2016), which embeds intricate rows of blue and yellow beads within bands of orange and red paint that evoke colour field painting. White Hawk receives pride of place in the museum’s main exhibition space, a series of four rooms showcasing the artist’s skill in many media: acrylic painting, beadwork, video, and photography. She layers and leverages Indigenous motifs amidst those associated with Euro-American artists. The exhibition tackles the debate over the false binary of art vs. craft and the centrality of indigenous women to Native American communities; the exhibition tackles the former deftly, the latter feels less fully explored.
这篇评论着眼于肯珀当代艺术博物馆(Kemper Museum of Contemporary Art)对Dyani White Hawk过去十年作品的致敬,Dyani White Hawk是一位策展人和多媒体艺术家,拥有Sičáŋǧu拉科塔、德国和威尔士血统。展览入口正对面是Sean Scully的《摩洛哥人》(1984),将白鹰的作品定位为欧美对非白人美学的评论。例如,她的油画《无题(珊瑚色、绿松石色和黄色)》(2016),在橙色和红色的颜料带中嵌入了一排排复杂的蓝色和黄色珠子,让人联想到色彩场画。白鹰在博物馆的主要展览空间中占据了最重要的位置,四个房间展示了艺术家在多种媒体上的技巧:丙烯画、珠饰、视频和摄影。她在那些与欧美艺术家有关的作品中层层叠加并利用土著主题。这次展览探讨了关于艺术与工艺的错误二元对立以及土著妇女在美洲土著社区中的中心地位的争论;这次展览巧妙地处理了前者,而后者似乎没有得到充分的探索。
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引用次数: 0
Investigating Fluidity in Hans Haacke’s Condensation Cube (1965) and Gustave Metzger’s Liquid Crystal Environment (1965) 研究汉斯·哈克的凝结立方体(1965)和古斯塔夫·梅茨格的液晶环境(1965)中的流动性
Kitty Whittell
This article considers the role of fluidity in two early liquid-based works by Hans Haacke and Gustav Metzger, Condensation Cube (1965) and Liquid Crystal Environment (1965). Fluidity is distinct from liquidity in that it presents a process of transition from solid to liquid in the case of Liquid Crystal Environment and liquid to gas in Condensation Cube. The stakes of this fluid process are, as I argue, crucial to understanding the critical stakes of these works in relation to Haacke and Metzger's artistic practise. By examining fluid process, I hope to show how these early pieces also contribute institutional and political criticisms that are typically associated with Haacke and Metzger's later work.
本文考察了汉斯·哈克和古斯塔夫·梅茨格的两部早期以液体为基础的作品《凝结立方》(1965)和《液晶环境》(1965)中流动性的作用。流动性与流动性的区别在于,在液晶环境中,流动性表现为从固体到液体的转变过程,在冷凝立方中,流动性表现为从液体到气体的转变过程。正如我所说,这种流动过程的利害关系,对于理解这些作品与哈克和梅茨格的艺术实践之间的利害关系至关重要。通过对流动过程的研究,我希望展示这些早期作品如何也有助于对制度和政治的批评,这些批评通常与哈克和梅茨格后来的作品有关。
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引用次数: 0
Andy Warhol, Tate Modern, London, 12 March–15 November 2020 安迪·沃霍尔,泰特现代美术馆,伦敦,2020年3月12日至11月15日
Louis Shankar
In 2020, Tate Modern hosted a retrospective of Andy Warhol curated by Gregor Muir and Yilmaz Dziewior. They aimed to focus on the life of the artist, looking to his family, his sexuality, and his beliefs. This review assesses these aims, focusing on the queer strategies at work in recent Warhol scholarship.
2020年,泰特现代美术馆举办了安迪·沃霍尔回顾展,由格雷戈尔·缪尔和伊尔马兹·齐维尔策划。他们的目标是关注这位艺术家的生活,关注他的家庭、性取向和信仰。这篇综述评估了这些目标,重点关注最近沃霍尔奖学金中的酷儿策略。
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引用次数: 0
Politics, Fashion and Female Agency in Parisian Salons c. 1800: The Case of Juliette Récamier 1800年前后巴黎沙龙中的政治、时尚和女性代理:朱丽叶·雷姆卡米尔的案例
T. Sheikhan
During her lifetime, Juliette Récamier (1777-1849) was widely considered as the most beautiful woman in France. Within the country’s post-revolutionary Directory and Consulate epoch, Récamier ran a salon that boasted prominent political figures and writers among its frequent guests. Récamier’s own legacy however is one of seemingly total passivity: praise aside, the impression we are left with is one of placid docility. Récamier was greatly admired, yet incapable of articulating her own thoughts and ideas. This article examines François Gérard’s portrait of Récamier. At the time, Gérard (1770-1837) was one of the period’s most successful artists, whose services Napoléon would request for his coronation portrait in 1805. Gérard’s work leads to this study’s argument that the articulation and presentation of self image in the early nineteenth century was no less layered and complex than the creation of material images. In fact, it illustrates just how much Gérard’s portrait is an image of her making as much as it is of his. We see such agency further mediated in Récamier’s shawl dance, a performative staple of the soirées she hosted. Imbuing the artistic virtues associated with neoclassical dress with the passion, sensuality, and individualistic nature of dance; this article considers Récamier’s self-fashioning on a stage exclusively within her salon.
在她的一生中,朱丽叶·雷姆卡米尔(1777-1849)被广泛认为是法国最美丽的女人。在伊朗革命后的“指南”和“领事馆”时期,雷姆卡米尔经营着一家沙龙,经常邀请著名的政治人物和作家。然而,雷姆卡米尔自己的遗产似乎是一个完全被动的人:除了赞美之外,留给我们的印象是一种平静的温顺。雷姆卡米尔非常受人钦佩,但她无法表达自己的想法和观点。本文考察了弗朗索瓦·格姆卡米尔对格姆卡米尔的描述。当时,格姆拉德(1770-1837)是这一时期最成功的艺术家之一,1805年,拿破仑曾要求格姆拉德为他的加冕肖像提供服务。gsamrard的工作引出了本研究的论点,即在19世纪早期,自我形象的表达和呈现并不比物质形象的创造更分层和复杂。事实上,这说明了格萨玛德的肖像在多大程度上既是他的肖像,也是她的肖像。在她主持的社交活动中,我们看到这种能动性在她的披肩舞中得到了进一步的体现。将与新古典主义服装相关的艺术美德与舞蹈的激情、感性和个人主义本质相结合;这篇文章只考虑了rassacamier在她的沙龙舞台上的自我塑造。
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引用次数: 0
Theses in Progress 正在进行的论文
Not Applicable
Theses in Progress
正在进行的论文
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引用次数: 0
NeuralMLS: Geometry-Aware Control Point Deformation NeuralMLS:几何感知控制点变形
Meitar Shechter, R. Hanocka, G. Metzer, R. Giryes, D. Cohen-Or
We introduce NeuralMLS, a space-based deformation technique, guided by a set of displaced control points. We leverage the power of neural networks to inject the underlying shape geometry into the deformation parameters. The goal of our technique is to enable a realistic and intuitive shape deformation. Our method is built upon moving least-squares (MLS), since it minimizes a weighted sum of the given control point displacements. Traditionally, the influence of each control point on every point in space (i.e., the weighting function) is defined using inverse distance heuristics. In this work, we opt to learn the weighting function, by training a neural network on the control points from a single input shape, and exploit the innate smoothness of neural networks. Our geometry-aware control point deformation is agnostic to the surface representation and quality; it can be applied to point clouds or meshes, including non-manifold and disconnected surface soups. We show that our technique facilitates intuitive piecewise smooth deformations, which are well suited for manufactured objects. We show the advantages of our approach compared to existing surface and space-based deformation techniques, both quantitatively and qualitatively.
我们介绍了一种基于空间的变形技术NeuralMLS,它由一组位移控制点引导。我们利用神经网络的力量将底层几何形状注入到变形参数中。我们技术的目标是实现现实和直观的形状变形。我们的方法建立在移动最小二乘(MLS)的基础上,因为它最小化了给定控制点位移的加权和。传统上,每个控制点对空间中每个点的影响(即权重函数)是使用逆距离启发式定义的。在这项工作中,我们选择通过在单个输入形状的控制点上训练神经网络来学习加权函数,并利用神经网络固有的平滑性。我们的几何感知控制点变形与表面表示和质量无关;它可以应用于点云或网格,包括非流形和不连接的表面汤。我们表明,我们的技术促进直观的分段平滑变形,这是非常适合制造对象。我们展示了与现有的基于表面和空间的变形技术相比,我们的方法在定量和定性方面的优势。
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引用次数: 3
Quick Cone Map Generation on the GPU 在GPU上快速生成锥形地图
Gábor Valasek, Róbert Bán
We propose an efficient conservative cone map generation algorithm that has Θ ( N 2 log N ) complexity for textures of dimension N × N in contrast to the Θ ( N 4 ) complexity of brute-force approaches. This is achieved by using a maximum mip texture of a heightmap to process all texels during the search for cone apertures, resulting in real-time generation times. Furthermore, we show that discarding already visited regions of neighboring mip texels widens the obtained cones considerably while still being conservative. Finally, we present a method to increase cone aperture tangents further at the expense of conservativeness. We compare our methods to brute-force and relaxed cone maps in generation and rendering performance.
我们提出了一种高效的保守锥图生成算法,对于N × N维纹理,该算法的复杂度为Θ (n2 log N),而暴力破解方法的复杂度为Θ (n4)。这是通过在搜索锥孔时使用高度图的最大mip纹理来处理所有纹理来实现的,从而产生实时生成时间。此外,我们证明了丢弃相邻mip texels已经访问的区域大大拓宽了获得的锥,同时仍然是保守的。最后,我们提出了一种以牺牲保守性为代价进一步增大圆锥孔径切线的方法。在生成和渲染性能方面,我们将我们的方法与蛮力和放松锥贴图进行了比较。
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引用次数: 0
Fitness of General-Purpose Monocular Depth Estimation Architectures for Transparent Structures 透明结构通用单目深度估计体系的适应度
Tristan Wirth, Aria Jamili, Max von Bülow, V. Knauthe, S. Guthe
Due to material properties, monocular depth estimation of transparent structures is inherently challenging. Recent advances leverage additional knowledge that is not available in all contexts, i.e., known shape or depth information from a sensor. General-purpose machine learning models, that do not utilize such additional knowledge, have not yet been explicitly evaluated regarding their performance on transparent structures. In this work, we show that these models show poor performance on the depth estimation of transparent structures. However, fine-tuning on suitable data sets, such as ClearGrasp, increases their estimation performance on the task at hand. Our evaluations show that high performance on general-purpose benchmarks translates well into performance on transparent objects after fine-tuning. Furthermore, our analysis suggests, that state-of-theart high-performing models are not able to capture a high grade of detail from both the image foreground and background at the same time. This finding shows the demand for a combination of existing models to further enhance depth estimation quality. CCS Concepts • Computing methodologies → Computer vision; Shape inference;
由于材料的特性,透明结构的单目深度估计具有固有的挑战性。最近的进展利用了并非在所有情况下都可用的额外知识,即来自传感器的已知形状或深度信息。通用机器学习模型没有利用这些额外的知识,尚未明确评估其在透明结构上的性能。在这项工作中,我们表明这些模型在透明结构的深度估计上表现不佳。然而,对合适的数据集进行微调,比如ClearGrasp,可以提高它们对手头任务的估计性能。我们的评估表明,经过微调后,通用基准测试的高性能可以很好地转化为透明对象的性能。此外,我们的分析表明,最先进的高性能模型无法同时从图像前景和背景中捕获高质量的细节。这一发现表明需要结合现有模型来进一步提高深度估计质量。•计算方法→计算机视觉;图形推理;
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引用次数: 0
期刊
Eurographics ... Workshop on 3D Object Retrieval : EG 3DOR. Eurographics Workshop on 3D Object Retrieval
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