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- research-articleJune 2024
Refracting Once is Enough: Neural Radiance Fields for Novel-View Synthesis of Real Refractive Objects
ICMR '24: Proceedings of the 2024 International Conference on Multimedia RetrievalPages 694–703https://doi.org/10.1145/3652583.3658000Neural Radiance Fields (NeRF) have shown promise in novel view synthesis, but it still face challenges when applied to refractive objects. The presence of refraction disrupts multiview consistency, often resulting in renderings that are either blurred or ...
- research-articleFebruary 2024
Interactive Calculation of Light Refraction and Caustics Using a Graphics Processor
Programming and Computing Software (KLU-PACS), Volume 50, Issue 1Pages 63–72https://doi.org/10.1134/S0361768824010122AbstractWhile modern rendering systems are efficient for modeling complex light paths in complex environments, the rendering of refractive caustics still takes a long time. Caustics are light patterns that occur when light is refracted and reflected from ...
- ArticleJuly 1999Seminal Paper
Environment matting and compositing
SIGGRAPH '99: Proceedings of the 26th annual conference on Computer graphics and interactive techniquesPages 205–214https://doi.org/10.1145/311535.311558This paper introduces a new process, environment matting, which captures not just a foreground object and its traditional opacity matte from a real-world scene, but also a description of how that object refracts and reflects light, which we call an ...
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Seminal Graphics Papers: Pushing the Boundaries, Volume 2: ISBN 9798400708978, August 2023 - research-articleJuly 2022
Eikonal Fields for Refractive Novel-View Synthesis
SIGGRAPH '22: ACM SIGGRAPH 2022 Conference ProceedingsArticle No.: 39, Pages 1–9https://doi.org/10.1145/3528233.3530706We tackle the problem of generating novel-view images from collections of 2D images showing refractive and reflective objects. Current solutions assume opaque or transparent light transport along straight paths following the emission-absorption model. ...
- research-articleJuly 2022
EyeNeRF: a hybrid representation for photorealistic synthesis, animation and relighting of human eyes
ACM Transactions on Graphics (TOG), Volume 41, Issue 4Article No.: 166, Pages 1–16https://doi.org/10.1145/3528223.3530130A unique challenge in creating high-quality animatable and relightable 3D avatars of real people is modeling human eyes, particularly in conjunction with the surrounding periocular face region. The challenge of synthesizing eyes is multifold as it ...
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- invited-talkAugust 2021
Transparency Rendering in Cyberpunk 2077
SIGGRAPH '21: ACM SIGGRAPH 2021 TalksArticle No.: 47, Pages 1–2https://doi.org/10.1145/3450623.3464629This talk discusses in-detail the transparencies pipeline of Cyberpunk 2077. We present a high-level overview of the system, and then provide details on individual components. Particularly, we discuss our take on decoupled particle lighting (DPL), our ...
- research-articleJune 2019
A fast approach to refraction-aware eye-model fitting and gaze prediction
ETRA '19: Proceedings of the 11th ACM Symposium on Eye Tracking Research & ApplicationsArticle No.: 23, Pages 1–9https://doi.org/10.1145/3314111.3319819By temporally integrating information about pupil contours extracted from eye images, model-based methods for glint-free gaze estimation can mitigate pupil detection noise. However, current approaches require time-consuming iterative solving of a ...
- abstractAugust 2018
Groovy graphics assignments: ray-traced transmission
SIGGRAPH '18: ACM SIGGRAPH 2018 Educator's ForumArticle No.: 12, Pages 1–2https://doi.org/10.1145/3215641.3215651This groovy graphics assignment introduces transmissive rays to a basic reflective ray tracer. The assignment is groovy because it introduces transparent objects, application of Snell's Law, and allows for testing of advanced variations (e.g., Schlick's ...
- research-articleJune 2018
A novel approach to single camera, glint-free 3D eye model fitting including corneal refraction
ETRA '18: Proceedings of the 2018 ACM Symposium on Eye Tracking Research & ApplicationsArticle No.: 9, Pages 1–9https://doi.org/10.1145/3204493.3204525Model-based methods for glint-free gaze estimation typically infer eye pose using pupil contours extracted from eye images. Existing methods, however, either ignore or require complex hardware setups to deal with refraction effects occurring at the ...
- invited-talkJuly 2016
Lapping water effects in Piper
The short film Piper tells the story of a young sandpiper's first interaction with lapping water. The story is a rhythmic interplay between animated characters and water effects, whether realistic or caricatured. We describe our approach to creating ...
- articleJuly 2016
Geometry of Refractions and Reflections Through a Biperiodic Medium
SIAM Journal on Applied Mathematics (SJAM), Volume 76, Issue 4Pages 1219–1238https://doi.org/10.1137/15M1014127The behavior of light rays obeying Snell's law in a medium made up of two materials with different refractive indices and which are arranged in a periodic chessboard pattern is described. The analysis is in some ways analogous to the study of rational ...
- articleJune 2016
A double-metallic-layered Huygens' surface for broadband and highly efficient beam refractions
International Journal of RF and Microwave Computer-Aided Engineering (RFMCE), Volume 26, Issue 5Pages 449–455https://doi.org/10.1002/mmce.20988In this article, a double-metallic-layered Huygens' surface Huygens' surface that efficiently refracts normally incident electromagnetic waves at the telecommunication frequency of 25 GHz is reported. The phase gradient along the interface is controlled ...
- short-paperMarch 2016Best Paper
Rendering refraction and reflection of eyeglasses for synthetic eye tracker images
ETRA '16: Proceedings of the Ninth Biennial ACM Symposium on Eye Tracking Research & ApplicationsPages 143–146https://doi.org/10.1145/2857491.2857494While for the evaluation of robustness of eye tracking algorithms the use of real-world data is essential, there are many applications where simulated, synthetic eye images are of advantage. They can generate labelled ground-truth data for appearance ...
- research-articleFebruary 2016
A phenomenological scattering model for order-independent transparency
I3D '16: Proceedings of the 20th ACM SIGGRAPH Symposium on Interactive 3D Graphics and GamesPages 149–158https://doi.org/10.1145/2856400.2856418Translucent objects such as fog, smoke, glass, ice, and liquids are pervasive in cinematic environments because they frame scenes in depth and create visually compelling shots. Unfortunately, they are hard to simulate in real-time and have thus ...
- ArticleAugust 2014
A Universal Approach for Geometric Modelling in Underwater Stereo Image Processing
CVAUI '14: Proceedings of the 2014 ICPR Workshop on Computer Vision for Analysis of Underwater ImageryPages 49–56https://doi.org/10.1109/CVAUI.2014.14Most standard procedures of stereo image processing are not applicable in under underwater 3D measurement tasks. Due to refraction, the collinearity of an image point on the sensor, the camera projection centre and the 3D object point is not fulfilled. ...
- ArticleDecember 2013
Refractive Structure-from-Motion on Underwater Images
ICCV '13: Proceedings of the 2013 IEEE International Conference on Computer VisionPages 57–64https://doi.org/10.1109/ICCV.2013.14In underwater environments, cameras need to be confined in an underwater housing, viewing the scene through a piece of glass. In case of flat port underwater housings, light rays entering the camera housing are refracted twice, due to different medium ...
- ArticleJuly 2013
Extending an object-oriented RETE network with fine-grained reactivity to property modifications
RuleML'13: Proceedings of the 7th international conference on Theory, Practice, and Applications of Rules on the WebPages 173–187https://doi.org/10.1007/978-3-642-39617-5_17Managing rule chaining, especially in presence of recursion, is a common difficulty when authoring rule based applications. For this reason, production systems implement strategies such as refraction to control rule activation repeatability. In this ...
- research-articleJanuary 2013
Detecting Motion through Dynamic Refraction
IEEE Transactions on Pattern Analysis and Machine Intelligence (ITPM), Volume 35, Issue 1Pages 245–251https://doi.org/10.1109/TPAMI.2012.192Refraction causes random dynamic distortions in atmospheric turbulence and in views across a water interface. The latter scenario is experienced by submerged animals seeking to detect prey or avoid predators, which may be airborne or on land. Man ...
- ArticleMay 2012
Real Time Ray Tracing for Augmented Reality
SVR '12: Proceedings of the 2012 14th Symposium on Virtual and Augmented RealityPages 131–140https://doi.org/10.1109/SVR.2012.8This paper introduces a novel graphics rendering pipeline applied to augmented reality, based on a real time ray tracing paradigm. Ray tracing techniques process pixels independently from each other, allowing an easy integration with image-based ...
- opinionMarch 2012
Material Appearance
IEEE Computer Graphics and Applications (ICGA), Volume 32, Issue 2Pages 22–23https://doi.org/10.1109/MCG.2012.40This issue features four articles on material appearance, which is important in many computer graphics applications. Two articles on general methods consider two distinct issues: measurement and efficient rendering. The other articles examine two ...