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Image shading taking into account relativistic effects

Meng-Chou Chang, Feipei Lai, Wei-Chao Chen
1996 ACM Transactions on Graphics  
Detailed examples are also given to show the result of shading with the relativistic effects taken into account.  ...  Creating images of 3D scenes in relativistic motion might have important applications to science-fiction films, computer games, and virtual environments.  ...  Image Shading Taking into Account Relativistic Effects • and (48) to include light sources moving relative to the objects.  ... 
doi:10.1145/234535.234537 fatcat:ytxb75fxyrg3bll6b6psn26eli

Searchlight and Doppler effects in the visualization of special relativity: a corrected derivation of the transformation of radiance

Daniel Weiskopf, Ute Kraus, Hanns Ruder
1999 ACM Transactions on Graphics  
Some examples are given to show the results of image synthesis with relativistic e ects taken into account.  ...  We demonstrate that a photo-realistic image of a rapidly moving object is dominated by the searchlight and Doppler e ects.  ...  Chang et al. 1996] , however, present a complete description of image shading which t a k es into account relativistic e ects.  ... 
doi:10.1145/336414.336459 fatcat:otmyg7tq6jg3di2nosqsfq6wku

Relativistic Effects for Time-Resolved Light Transport

Adrian Jarabo, Belen Masia, Andreas Velten, Christopher Barsi, Ramesh Raskar, Diego Gutierrez
2015 Computer graphics forum (Print)  
We explore the effects of time dilation, light aberration, frequency shift and radiance accumulation by modifying existing models of these relativistic effects to take into account the time-resolved nature  ...  We further introduce, for the first time, a pinhole camera model into our relativistic rendering framework, and account for subsequent changes in focal length and field of view as the camera moves through  ...  Figure 7 : 7 Comparison of taking into account the effect of relativistic acceleration on the camera (right), against the effects of using constant speed (left).  ... 
doi:10.1111/cgf.12604 fatcat:py6lw3t5yfha3ed5qplstwx7zm

Fast Visualization of Special Relativistic Effects on Geometry and Illumination [article]

Daniel Weiskopf
2000 EUROVIS 2005: Eurographics / IEEE VGTC Symposium on Visualization  
The physical basis consists of the relativistic aberration of light, the Doppler effect, and the searchlight effect.  ...  They account for changes of apparent geometry, color, and brightness of the objects.  ...  The rotation T rot, a takes into account that the direction of motion differs from the z axis of the sphere.  ... 
doi:10.2312/vissym/vissym00/219-228 fatcat:3axxsjz5und67hlofhk5f6d2wu

Fast Visualization of Special Relativistic Effects on Geometry and Illumination [chapter]

Daniel Weiskopf
2000 Eurographics  
The physical basis consists of the relativistic aberration of light, the Doppler effect, and the searchlight effect.  ...  They account for changes of apparent geometry, color, and brightness of the objects.  ...  The rotation T rot, a takes into account that the direction of motion differs from the z axis of the sphere.  ... 
doi:10.1007/978-3-7091-6783-0_22 fatcat:uf3ntincsrcnzfcoq5mpqnfhnq

Quantitative Ratiometric Imaging of FRET-Biosensors in Living Cells [chapter]

Désirée Spiering, Jose Javier Bravo-Cordero, Yasmin Moshfegh, Veronika Miskolci, Louis Hodgson
2013 Methods in Cell Biology  
Here, we will cover the basic approaches useful for processing the raw image data sets into relativistic ratiometric measurements, capable of depicting relative differences in the protein activation states  ...  The image data sets obtained from these sensors require careful processing in order to represent the actual protein activation events.  ...  Another key point is the use of frame averaging when obtaining the shading images. We routinely take 20 FOVs and average in order to produce one shading correction image.  ... 
doi:10.1016/b978-0-12-407761-4.00025-7 pmid:23931524 pmcid:PMC3789067 fatcat:42344hguabbhjnvcxpdlh7zyua

Neutrino properties from cosmology [article]

Maria Archidiacono, Thejs Brinckmann, Julien Lesgourgues, Vivian Poulin
2017 arXiv   pre-print
of different parameters by taking into account datasets from different redshift.  ...  This bound strongly improves once CMB lensing is taken into account (M ν < 0.14 eV at 95% c.l.).  ... 
arXiv:1705.00496v1 fatcat:6qtzzhjatjhdxheyocaxmaqfvy

Progress in Rendering and Modeling for Digital Planetariums [article]

Marcus Magnor, Pradeep Sen, Joe Kniss, Edward Angel, Stephan Wenger
2010 Eurographics State of the Art Reports  
Incorporating these algorithms into the next generation of dome display software and production tools will help advance digital planetariums toward make full use of their potential.  ...  The rendering algorithm takes scattering phase function, albedo, and multiple scattering effects into account.  ...  In a second step, analyzing photographs at visible wavelengths while taking into account the recovered ionized gas distribution also yields the axisymmetric dust component.  ... 
doi:10.2312/ega.20101000 fatcat:5pm4lrsponay7b33wfr367lgly

Page 433 of Physical Review Vol. 52, Issue 5 [page]

1937 Physical Review  
This involves the deter- mination of an effective scattering angle taking into account the geometry of the scattering chamber.  ...  Referring to Fig. 1 it will be seen how we have divided the volume of the helium gas effective in scattering the radiation (shaded re- gion) into five zones corresponding to approxi- mately equal steps  ... 

The current ability to test theories of gravity with black hole shadows

Yosuke Mizuno, Ziri Younsi, Christian M. Fromm, Oliver Porth, Mariafelicia De Laurentis, Hector Olivares, Heino Falcke, Michael Kramer, Luciano Rezzolla
2018 Nature Astronomy  
To this end, we perform general-relativistic magnetohydrodynamical (GRMHD) simulations and use general-relativistic radiative transfer (GRRT) calculations to generate synthetic shadow images of a magnetised  ...  In addition, and for the first time, we perform GRMHD simulations and GRRT calculations for a dilaton BH, which we take as a representative solution of an alternative theory of gravity.  ...  This research is supported by the ERC synergy grant "BlackHoleCam: Imaging the Event Horizon of Black Holes" (Grant No. 610058). ZY acknowledges support from an Alexander von Humboldt Fellowship.  ... 
doi:10.1038/s41550-018-0449-5 fatcat:wzid4yc73vf4lb23ubba7ul6mi


E. Mediavilla, J. Jiménez-vicente, J. A. Muñoz, T. Mediavilla
2015 Astrophysical Journal Letters  
We also allow for a linear gradient that can account for an additional varying background effect of microlensing.  ...  We study three high magnification microlensing events, generally recognized as probable caustic crossings, in the optical light curves of the multiply imaged quasar Q 2237+0305.  ...  Perhaps the coincidence is not so surprising taking into account that the three HME have, in fact, been selected among others as the best candidates for single caustic crossing.  ... 
doi:10.1088/2041-8205/814/2/l26 fatcat:osblzxnwjvbchfoudec5zluojy

Strong gravitational lensing by Schwarzschild black holes

G. S. Bisnovatyi-Kogan, O. Yu. Tsupko
2008 Astrophysics  
The properties of the relativistic rings which show up in images of a source when a black hole lies between the source and observer are examined.  ...  The impact parameters are calculated, along with the distances of closest approach of the rays which form a relativistic ring, their angular sizes, and their "magnification" factors, which are much less  ...  Some effects associated with taking the motion of photons near the gravitational radius of a black hole into account, have been discussed before [3, 4] .  ... 
doi:10.1007/s10511-008-0011-8 fatcat:wv7t46cbbvgafowuhgsyh247ta

Demonstration of Single-Shot Picosecond Time-Resolved MeV Electron Imaging Using a Compact Permanent Magnet Quadrupole Based Lens

D. Cesar, J. Maxson, P. Musumeci, Y. Sun, J. Harrison, P. Frigola, F. H. O'Shea, H. To, D. Alesini, R. K. Li
2016 Physical Review Letters  
We present the results of an experiment where a short focal length (~ 1.3 cm) permanent magnet electron lens is used to image micron-size features of a metal sample in a single shot, using an ultra- high  ...  Start-to-end simulations of the image formation process are performed taking into account multiple elastic and inelastic scattering of electrons inside the sample.  ...  One path to SPTEM requires replacing the 100 keV typical of conventional TEM's with MeV electrons in order to take advantage of the relativistic suppression of the space-charge effects.  ... 
doi:10.1103/physrevlett.117.024801 pmid:27447510 fatcat:hzor36ulznhqbji65eryzf3vvm

Line shifts in accretion disks—the case of Fe K α $\alpha$

P. Jovanović, V. Borka Jovanović, D. Borka, L. Č. Popović
2016 Astrophysics and Space Science  
Here we present a short overview and main results of our investigations of several effects which can induce shifts in the broad Fe Kα line emitted from relativistic accretion disks around single and binary  ...  The presented results demonstrate that all these effects could have a significant influence on the observed profiles of the broad Fe Kα line emitted from relativistic accretion disks around single and  ...  However, one should take into account that some other phenomena, such as gravitational microlensing could also induce line shifts (see e.g. Popović et al. 2003a Popović et al.  ... 
doi:10.1007/s10509-016-2653-z fatcat:ik57uevipzb3fifpojwpm6ey4i

Long-lasting injection of solar energetic electrons into the heliosphere

N. Dresing, R. Gómez-Herrero, B. Heber, A. Klassen, M. Temmer, A. Veronig
2018 Astronomy and Astrophysics  
White areas denote pitch angle ranges which were not covered by the telescopes taking into account the opening angles of the apertures.  ...  The spacecraft motion with time and the measured solar-wind speed have been taken into account to determine the magnetic footpoint positions at the Sun allowing for a more accurate determination of the  ... 
doi:10.1051/0004-6361/201731573 fatcat:dd2eqnvqizdkdaxhrlebng2xnq
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