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NeRD: Neural Reflectance Decomposition from Image Collections
[article]
2021
arXiv
pre-print
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We propose a neural reflectance decomposition (NeRD) technique that uses physically-based rendering to decompose the scene into spatially varying BRDF material properties. ...
We demonstrate the potential of the proposed approach with experiments on both synthetic and real datasets, where we are able to obtain high-quality relightable 3D assets from image collections. ...
We call our approach "Neural Reflectance Decomposition" (NeRD) NeRD not only enables simultaneous relighting and view synthesis but also allows for a more flexible range of image acquisition settings ...
arXiv:2012.03918v4
fatcat:mueqzzmffncftkd2d73s5fwnya
Neural-PIL: Neural Pre-Integrated Lighting for Reflectance Decomposition
[article]
2021
arXiv
pre-print
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We propose a novel reflectance decomposition network that can estimate shape, BRDF, and per-image illumination given a set of object images captured under varying illumination. ...
Neural approaches such as NeRF have achieved remarkable success in view synthesis, but do not explicitly perform decomposition and instead operate exclusively on radiance (the product of reflectance and ...
their image collections. ...
arXiv:2110.14373v1
fatcat:vg5s62ydwnffzivbyrqdu2g5tu
Extracting Triangular 3D Models, Materials, and Lighting From Images
[article]
2022
arXiv
pre-print
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We present an efficient method for joint optimization of topology, materials and lighting from multi-view image observations. ...
Unlike recent multi-view reconstruction approaches, which typically produce entangled 3D representations encoded in neural networks, we output triangle meshes with spatially-varying materials and environment ...
Neural implicit representations leverage differentiable rendering to reconstruct 3D geometry with appearance from image collections [29, 45, 49] . ...
arXiv:2111.12503v3
fatcat:pnd3yiexwvcqlkgxbebcwadlki
Neural Radiance Fields for Outdoor Scene Relighting
[article]
2021
arXiv
pre-print
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Photorealistic editing of outdoor scenes from photographs requires a profound understanding of the image formation process and an accurate estimation of the scene geometry, reflectance and illumination ...
To evaluate the proposed method, we collect a new benchmark dataset of several outdoor sites, where each site is photographed from multiple viewpoints and at different timings. ...
Nerd: Neural re- traits. ACM Transactions on Graphics, 40(4), 2021. 2
flectance decomposition from image collections. ...
arXiv:2112.05140v1
fatcat:kgsqa4x73rcbziejajqkzrajqe
DIB-R++: Learning to Predict Lighting and Material with a Hybrid Differentiable Renderer
[article]
2021
arXiv
pre-print
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and lighting prediction from a single image without requiring any ground-truth. ...
We consider the challenging problem of predicting intrinsic object properties from a single image by exploiting differentiable renderers. ...
Recent research on inverse graphics targets the ill-posed problem of jointly estimating geometry, reflectance and illumination from image observations using neural networks. ...
arXiv:2111.00140v1
fatcat:bdlbtkktm5hhha33mcnxv7bbh4
Neural Fields in Visual Computing and Beyond
[article]
2022
arXiv
pre-print
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2021 pre-print arXiv:2111.11426v1 fatcat:g3pfk4fyjrd4xd32pdlq2gaizeOther Versions
These methods, which we call neural fields, have seen successful application in the synthesis of 3D shapes and image, animation of human bodies, 3D reconstruction, and pose estimation. ...
In Part I, we focus on techniques in neural fields by identifying common components of neural field methods, including different representations, architectures, forward mapping, and generalization methods ...
Voronoi decomposition with neural radiance fields [RJY * 21]. ...
arXiv:2111.11426v4
fatcat:yteqzbu6gvgdzobnfzuqohix2e
NeROIC: Neural Rendering of Objects from Online Image Collections
[article]
2022
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We present a novel method to acquire object representations from online image collections, capturing high-quality geometry and material properties of arbitrary objects from photographs with varying cameras ...
Using a multi-stage approach extending neural radiance fields, we first infer the surface geometry and refine the coarsely estimated initial camera parameters, while leveraging coarse foreground object ...
In this work, we propose NeROIC, a novel approach to Neural Rendering of objects from Online Image Collections. ...
doi:10.48550/arxiv.2201.02533
fatcat:ymyxxmpk2vfppfbzcuvhaozmda
Learning Representations of Social Media Users
[article]
2018
arXiv
pre-print
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In this thesis, we begin by showing how user representations can be learned from multiple types of user behavior on social media. ...
Computer scientists consider the problem of inferring user representations more abstractly; how does one extract a stable user representation - effective for many downstream tasks - from a medium as noisy ...
This setting reflects predicting the values for some states using data already available from other states. ...
arXiv:1812.00436v1
fatcat:qp2hf6f6nfe7djyjakkns36epq
Entity Retrieval and Text Mining for Online Reputation Monitoring
[article]
2018
arXiv
pre-print
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Thus, we need to obtain a value that reflects the general image of each political target in social media, for a given time period. To that end, we use sentiment aggregate functions. ...
Or learning polarity specific word embeddings from tweets collected using emoticons [103] and directly incorporating the supervision from sentiment polarity in the loss functions of neural networks ...
arXiv:1801.07743v1
fatcat:f56lljaavnd6zm4vnngs2m3tga
Defining Antifragility and the application on Organisation Design
2020
Zenodo
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Resilience is the way how a system bounce back from impact by a stressor. Antifragile is the way a system improves by impact by a stressor. ...
Images retrieved from Goodreads.com. ...
Data collected
Data collected from Expert Review -individuals The overall feedback from the one-on-one expert reviews was that the EAAL model sparked inspiration and was relevant to their individual ...
doi:10.5281/zenodo.3719388
fatcat:n6ni2iym6rh2fi54i6pgufjnxy
The People's Encyclopedia Under the Gaze of the Sages: A Systematic Review of Scholarly Research on Wikipedia
2012
Social Science Research Network
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Its rapid success has inspired hundreds of scholars from various disciplines to study its content, communication and community dynamics from various perspectives. ...
We thank Richard Wong for his assistance in collecting author data. We thank Emilio J. Rodríguez-Posada (emijrp) for his model WikiPapers site, upon which much of WikiLit was based. ...
This study was funded by the Social Sciences and Humanities Research Council of Canada; the Lundbeck Foundation Center for Integrated Molecular Brain Imaging (CIMBI); the Concordia University Aid to Scholarly ...
doi:10.2139/ssrn.2021326
fatcat:egbnz5qzcjbfbnzxlz75x4ktz4
Exploring food reward and biometrics in relation to food intake
2022
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Biometric measures such as eye tracking, electrodermal activity and facial expressions may separately or collectively provide deeper insight into psychophysiological processes underlying food reward and ...
The results from this cross-sectional study showed significant differences in visual attention towards foods varying in fat content and taste prior to making rapid food choice decisions. ...
Koch for their help with data collection. Moreover, a great appreciation to all the participants, who contributed with their time and cooperation in the study.
Conflicts of ...
doi:10.21996/15n6-9088
fatcat:r7upmrvs7rbzxjt5rkxd63etoq
User interfaces and discrete event simulation models
1994
Simulation Practice and Theory
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To Alistair Gardiner for helping me to capture graphics from a screen. ...
SimDraw supports importing bitmapped images from other sources, like for example Windows Paintbrush. ...
Norman (1987) calls this image "the system image" to distinguish it from the conceptual model upon which it is based, and the mental model one hopes that the user will form of the system. ...
doi:10.1016/0928-4869(94)90011-6
fatcat:w5rz6nynwfcl3g6tzpw2l4oqc4
The Acquisition of Morphophonology
1978
Monographs of the Society for Research in Child Development
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This ties in which the usage-based view that French liaison is a collection of frequent constructions with specific liaison consonants that originated from phonetically conditioned final consonant deletion ...
The child had to repeat the name (until it was repeated correctly) and was then presented with the second image and asked to form the plural in the same way. ...
. † The StreefLijst (SL) ratings were taken from the streeflijst voor 4-tot 6-jarigen 'target list vocabulary for 4-to 6-year-olds' (Damhuis et al. 1992 ) and reflect judgments of 2585 words by 71 teachers ...
doi:10.2307/1166047
fatcat:7msswhpjb5gy3bxcejyzxtinbq
MMEDIA 2017 The Ninth International Conferences on Advances in Multimedia MMEDIA 2017 Committee MMEDIA Steering Committee MMEDIA 2017 Technical Program Committee
The Ninth International Conferences on Advances in Multimedia (MMEDIA 2017), held between
unpublished
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MMEDIA 2017 brought together experts from both academia and industry for the exchange of ideas and discussions on future challenges in multimedia fundamentals, mobile and ubiquitous multimedia, multimedia ...
Data collection This section presents a description of the Method of (1) data collection presented in Figure 1 . Geotagged tweets sent from Twitter are a collection target. ...
We got approximately 300 skin images from face and 50 skin images from hand using the two cameras. Figure 10 depicts the segmentation result after watershed transform. ...
fatcat:b64rri5ymbctxnl7uklbozddii
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