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AR360: Dynamic Illumination for Augmented Reality with Real-Time Interaction

Araeshah Alhakamy, Mihran Tuceryan
2019 2019 IEEE 2nd International Conference on Information and Computer Technologies (ICICT)  
Current augmented and mixed reality systems suffer a lack of correct illumination modeling where the virtual objects render the same lighting condition as the real environment.  ...  The third is defining the virtual objects with proper lighting and shadowing characteristics using shader language through multiple passes.  ...  Franke [11] presented delta Light Propagation Volumes (LPV) a novel volumetric relighting method in mixed reality application that works at real-time which simulate the effect of indirect illumination  ... 
doi:10.1109/infoct.2019.8710982 fatcat:cwjfld53pzal3nrfp6cotzg5fq

Evaluation of the Delta Simulation Model-2 in Computing Tidally Driven Flows in the Sacramento–San Joaquin Delta

Vamsi K. Sridharan, Stephen G. Monismith, Oliver B. Fringer, Derek A. Fong
2018 San Francisco Estuary and Watershed Science  
We also thank CDWR for permitting the use of their model for this study.  ...  Swetha Madhur Kumar at the University of California, Santa Cruz, for assisting  ...  Delta could be reasonably expected to be well-mixed ( , bars indicate the isopycnals (salinity decreases from light to dark); arrows indicate flows; arrow combs indicate the simplified velocity profiles  ... 
doi:10.15447/sfews.2018v16iss2art6 fatcat:7xesmcooq5b75htg2bd63zbmmm

Topics in Effective Field Theory for Lattice QCD [article]

Andre Walker-Loud
2006 arXiv   pre-print
We then discuss the two-pion system in finite volume, determining the exponentially small volume corrections necessary for lattice determinations of the scattering parameters.  ...  We also determine the lattice spacing artifacts that arise for a mixed-action lattice simulation of the two-pion system with Ginsparg-Wilson valence quarks and staggered sea quarks.  ...  realizing light quark masses.  ... 
arXiv:hep-lat/0608010v1 fatcat:nwjefd72pjbrnbd7agat2vv3lm

Holography, Fourier Optics, and Beyond Photonic Crystals: Holographic Fabrications for Weyl Points, Bound States in the Continuum, and Exceptional Points

Yongjun Lim, Haedong Park, Byungsoo Kang, Kwangjin Kim, Daegyum Yang, Seungwoo Lee
2021 Advanced Photonics Research  
In addition, the scholarships for two graduate students who were authors of this  ...  This work was mainly supported by the Samsung Research Funding Center for Samsung Electronics under Project Number SRFC-MA1801-04.  ...  Such far-field propagating waves (Fðx, t o Þ) that are being mixed can have a different λ (or k), Figure 7 . k-Vector diagram in Fourier optics. a) Each propagating plane wave in 3D free space can be  ... 
doi:10.1002/adpr.202100061 fatcat:m6qq4altwzfurl7zlbzfcxvibe

Rate and apparent quantum yield of photodissolution of sedimentary organic matter

Margaret L. Estapa, Lawrence M. Mayer, Emmanuel Boss
2012 Limnology and Oceanography  
The spectral apparent quantum yield (AQY) for photodissolution was computed by fitting DOC photoproduction rates under different spectral irradiance distributions to corresponding rates of light absorption  ...  dominate light absorption, DOC photoproduction from particles exceeds photooxidation of DOC.  ...  Hernes for helpful comments.  ... 
doi:10.4319/lo.2012.57.6.1743 fatcat:jrtk5issunfofi4wxbjn6rafyq

Accurate Monte Carlo simulation of frequency-domain optical coherence tomography

Yan Wang, Li Bai
2019 International Journal for Numerical Methods in Biomedical Engineering  
We incorporated a focusing Gaussian light beam rather than an infinitesimally thin light beam for accurate simulations. A new and more accurate photon detection scheme is also implemented.  ...  In addition to its 3D imaging capacity for medical diagnosis, its potential use for recovering optical parameters of biological tissues for biological and pathological analyses has also been explored by  ...  Therefore, their model assumes a delta-correlated light source and has accounted for the correlation between light propagated forward and backward.  ... 
doi:10.1002/cnm.3177 pmid:30690893 pmcid:PMC6492136 fatcat:dpknh5npbnedxhqje6ueoeevo4

A framework for transient rendering

Adrian Jarabo, Julio Marco, Adolfo Muñoz, Raul Buisan, Wojciech Jarosz, Diego Gutierrez
2014 ACM Transactions on Graphics  
T r a n s i e n t S t a t e t i me S t e a d y S t a t e Figure 1 : Our transient rendering framework allows time-resolved visualizations of light propagation.  ...  Note that in this scene we omit the propagation time of the last segment (from the scene to the camera).  ...  Acknowledgments We want to thank the reviewers for their insightful comments, and Mubbasir Kapadia for the link to sound rendering papers.  ... 
doi:10.1145/2661229.2661251 fatcat:47dhu6kltbbzbpt4y4lgh74chm

Quantum backaction of optical observations on Bose-Einstein condensates

U. Leonhardt, T. Kiss, P. Piwnicki
1999 European Physical Journal D : Atomic, Molecular and Optical Physics  
To describe the quantum physics of phase-contrast imaging we put forward a new approach to quantum-optical propagation.  ...  Instead, the condensate gets gradually depleted at a rate that is proportional to the light intensity and to the inverse cube of the optical wave length.  ...  (A mirror, for example, is excluded from this model.) We neglect the polarization mixing ∇(∇E) and consider paraxial propagation in the z-direction with carrier frequency ω 0 .  ... 
doi:10.1007/s100530050585 fatcat:iqse7aip35debixljdd6cc56di

Effects of Atomic-Scale Electron Density Profile and a Fast and Efficient Iteration Algorithm for Matter Effect of Neutrino Oscillation

Mihai Horoi, Adam Zettel
2020 Universe  
The new algorithm is further extended to the case of light sterile neutrinos.  ...  We investigated these effects by a direct integration of the coupled Dirac equations describing the propagation of flavor neutrinos into, through, and out of the matter.  ...  A special thank to Ethan Stearns for all his DFT calculations and help with Figure 1 . Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/universe6010016 fatcat:cxs35xwzyzczbojopms2kyuagy

Theoretical Model of the Physical System: Optimization by the Genetic Algorithm [chapter]

Stanislav Jureka
2011 Stochastic Optimization - Seeing the Optimal for the Uncertain  
It can accompany the propagation of light in an absorbing medium, light is emitted in all directions and contains the different frequencies.  ...  Refraction causes the light waves propagate with a smaller velocity than in free space. Refraction does not affect the intensity of the light wave.  ... 
doi:10.5772/14860 fatcat:f32jukbu2zhbrhbnjrj3cnntha

DeepVideoMVS: Multi-View Stereo on Video with Recurrent Spatio-Temporal Fusion [article]

Arda Düzçeker, Silvano Galliani, Christoph Vogel, Pablo Speciale, Mihai Dusmanu, Marc Pollefeys
2021 arXiv   pre-print
The novelty lies in propagating the hidden state of the cell by accounting for the viewpoint changes between time steps.  ...  The backbone of our approach is a real-time capable, lightweight encoder-decoder that relies on cost volumes computed from pairs of images.  ...  Apple ARKit and Android ARCore) [20] or mixed reality headsets such as Microsoft HoloLens.  ... 
arXiv:2012.02177v3 fatcat:pezh4aalffd3fj3wxxkswj752u

Spin Foams for the Real, Complex Orthogonal Groups in 4D and the bivector scalar product reality constraint [article]

Suresh K Maran
2005 arXiv   pre-print
I introduce the idea of a mixed Lorentzian Barrett-Crane model which mixes the intertwiners for the Lorentzian Barrett-Crane models. A mixed propagator is calculated.  ...  Spin foam models in 4D for the real and complex orthogonal gauge groups are discussed in a unified manner from the point of view of the bivector scalar product reality constraints.  ...  In this case the bivectors are complex and so the volume calculated for the sixth constraint is complex. So we need to relax the condition of the reality of the volume.  ... 
arXiv:gr-qc/0504092v2 fatcat:2qm6jqmp25ao7c6vvj2df23dwy

Decoding the spectra of low-finesse extrinsic optical fiber Fabry-Perot interferometers

Cheng Ma, Bo Dong, Jianmin Gong, Anbo Wang
2011 Optics Express  
Wang, "Mode power distribution effect in white-light multimode fiber extrinsic Fabry-Perot interferometric sensor systems," Opt.  ...  With excellent agreement with experiments, the theory presented in this paper leads to design guidelines for Fabry-Pérot interferometric sensors and insightful physical understanding of such devices.  ...  Acknowledgements The authors would like to thank Liguo Kong of the Department of Chemistry, Virginia Tech, for the inspiring discussions.  ... 
doi:10.1364/oe.19.023727 pmid:22109399 fatcat:ivjexbgkbngw3gtpuvosxuyf7u

A Versatile Optical Model for Hybrid Rendering of Volume Data

Fei Yang, Qingde Li, Dehui Xiang, Yong Cao, Jie Tian
2012 IEEE Transactions on Visualization and Computer Graphics  
It also provides a more rational basis for shading, so the problem of normal-based shading in homogeneous regions encountered in conventional volume rendering can be easily avoided.  ...  with light rays, can be predicted based on the behavior of each individual particle.  ...  For a sufficiently short ray segment, the total light propagated to the viewer can be flexibly modeled as a linear combination of the amount of light from the particles and that from the surfaces.  ... 
doi:10.1109/tvcg.2011.113 pmid:21690650 fatcat:x2osjmgkn5azrfajgk2lyrjoiy

Simulating tropical river plumes, a set of parametrizations based on macroscale data: A test case in the Mekong Delta region

R. Hordoir, K. D. Nguyen, J. Polcher
2006 Journal of Geophysical Research  
This model configuration also provides a good estimate of sea surface salinity in the vicinity of the coast of the Mekong Delta.  ...  This is achieved either explicitly, as for wind forcing, or using parametrizations corresponding to the length and timescales of river plumes physics, as for tides or estuaries.  ...  On the one hand, our tidal mixing parametrization is slightly over estimated in some places. This creates some light differences of stratification as illustrated on Figure 16 .  ... 
doi:10.1029/2005jc003392 fatcat:xh2t3ii6xjf5zmdowkugpqdytm
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