Filters








3,499 Hits in 4.2 sec

Scalable Height Field Self-Shadowing

Ville Timonen, Jan Westerholm
2010 Computer graphics forum (Print)  
We present a new method suitable for general purpose graphics processing units to render self-shadows on dynamic height fields under dynamic light environments in real-time.  ...  Visibility for each point in the height field is determined as the exact horizon for a set of azimuthal directions in time linear in height field size and the number of directions.  ...  Summary of core ideas The problem setting of height field self-shadowing is as follows.  ... 
doi:10.1111/j.1467-8659.2009.01642.x fatcat:b6rbbmpdsnfkdf7h7eo5xz2i7a

Practical dynamic parallax occlusion mapping

Natalya Tatarchuk
2005 ACM SIGGRAPH 2005 Sketches on - SIGGRAPH '05  
height field-ray intersection computation.  ...  Soft Shadows Computation During lighting computation, we convolve the light ray -height field intersection samples with a heuristic kernel approximating the surface thickness.  ... 
doi:10.1145/1187112.1187240 dblp:conf/siggraph/Tatarchuk05 fatcat:2l2r5itkhvghrgdeodl4dc434a

Universal Platform for Scalable Semiconductor‐Superconductor Nanowire Networks

Jason Jung, Roy L. M. Op het Veld, Rik Benoist, Orson A. H. Molen, Carlo Manders, Marcel A. Verheijen, Erik P. A. M. Bakkers
2021 Advanced Functional Materials  
The ability to lithographically define the position and area of these objects and to grow a predefined height ensures precise control of the shadowed region.  ...  By growing InP structures on both sides of in-plane nanowires, a combination of platinum and Pb can independently be shadow deposited, enabling a scalable and reproducible in situ device fabrication.  ...  This can be achieved by growing the nanowire itself to a height sufficient to enable self-shadowing (see Supporting Information 4).  ... 
doi:10.1002/adfm.202103062 fatcat:x54if2xbpnb5vpxwujxa3b6l5m

Dynamic parallax occlusion mapping with approximate soft shadows

Natalya Tatarchuk
2006 Proceedings of the 2006 symposium on Interactive 3D graphics and games - SI3D '06  
First, we propose a method for increased precision of the critical rayheight field intersection and adaptive height field sampling.  ...  The algorithm performs well for animated objects and supports dynamic rendering of height fields for a variety of interesting displacement effects.  ...  These approaches generate dynamic lighting with self-occlusion, shadows and motion parallax.  ... 
doi:10.1145/1111411.1111423 dblp:conf/si3d/Tatarchuk06 fatcat:iazk4vgzqnfd5bzisail5xofgm

Optimally Fast Soft Shadows on Curved Terrain with Dynamic Programming and Maximum Mipmaps [article]

Dawoon Jung
2020 arXiv   pre-print
We present a simple, novel method of efficiently rendering ray cast soft shadows on curved terrain by using dynamic programming and maximum mipmaps to rapidly find a global minimum shadow cost in constant  ...  in pixels) of the height field.  ...  Self-shadowing on terrain refers to shadows cast on terrain by the terrain itself, and is typically computed using shadow maps in the case of polygonal displacement mapping, or ray casting (hybrid methods  ... 
arXiv:2005.06671v1 fatcat:svb5i6b32fhjffp67vduyelgoy

Towards merged-element transmons using silicon fins: the FinMET [article]

Aranya Goswami, Anthony P. McFadden, Tongyu Zhao, Hadass S. Inbar, Jason T. Dong, Ruichen Zhao, Corey Rae McRae, Raymond W. Simmonds, Christopher J. Palmstrøm, David P. Pappas
2022 arXiv   pre-print
Here, as a first step to making such a device, the fabrication of Si fin capacitors on Si(110) substrates with shadow-deposited Al electrodes is demonstrated.  ...  Further thinning of silicon junctions towards the tunneling regime will enable the scalable fabrication of FinMET devices based on existing silicon technology, while simultaneously avoiding lossy amorphous  ...  (D) High angle dark field scanning transmission electron microscopy image of a fin cross-section with SiNx hard mask and shadow deposited Al.  ... 
arXiv:2108.11519v4 fatcat:anxordbp3fet5bjqakxdzaqjui

The fabrication of uniform cylindrical nanoshells and their use as spectrally tunable MRI contrast agents

G Zabow, S J Dodd, J Moreland, A P Koretsky
2009 Nanotechnology  
well-resolved nuclear magnetic resonance peaks of the resulting nanostructures attest to the nanoscale fabrication control and the general feasibility of such sputter redeposition for fabrication of a variety of self-supporting  ...  Bottom image shows same process but with background magnetic field applied illustrating automatic self-alignment of the cylindrical nanoshells with the applied field direction (black arrow).  ...  Particularly advantageous is scalability down to the nano-regime.  ... 
doi:10.1088/0957-4484/20/38/385301 pmid:19713581 pmcid:PMC3529466 fatcat:25ynn57wovfjrej4qweimyrdz4

Towards merged-element transmons using silicon fins: The FinMET

A. Goswami, A. P. McFadden, T. Zhao, H. Inbar, J. T. Dong, R. Zhao, C. R. H. McRae, R. W. Simmonds, C. J. Palmstrøm, D. P. Pappas
2022 Applied Physics Letters  
Here, as a first step to making such a device, the fabrication of Si fin capacitors on Si(110) substrates with shadow-deposited Al electrodes is demonstrated.  ...  Further thinning of silicon junctions toward the tunneling regime will enable the scalable fabrication of FinMET devices based on existing silicon technology while simultaneously avoiding lossy amorphous  ...  This shadow-evaporation technique, therefore, enables direct creation of a fin capacitor using a self-aligned process.  ... 
doi:10.1063/5.0104950 fatcat:siass4uufngcjbfdi253jbmjya

Scalable manufacturing of single nanowire devices using crack-defined shadow mask lithography

Alessandro Enrico, Valentin Dubois, Frank Niklaus, Göran Stemme
2019 ACS Applied Materials and Interfaces  
nanowires (NWs) have a broad range of applications in nanoelectronics, nanomechanics, and nanophotonics, but, to date, no technique can produce single sub-20 nm wide NWs with electrical connections in a scalable  ...  We have used conventional i-line stepper lithography with a nominal resolution of 365 nm to define crack lithography structures in a shadow mask for large-scale manufacturing of sub-20 nm wide NWs, which  ...  (g) SEM image (side-view) of a formed Au NW below the TiN shadow mask. Scale bar, 200 nm. (h) Process scalability.  ... 
doi:10.1021/acsami.8b19410 pmid:30698940 pmcid:PMC6426283 fatcat:znr5z4yornhfroriqgkmhxeo7u

Fabrication of Crystalline Semiconductor Nanowires by Vapor-Liquid-Solid Glancing Angle Deposition (VLS-GLAD) Technique

Arif S. Alagoz, Tansel Karabacak
2011 Materials Research Society Symposium Proceedings  
VLS-GLAD incorporates an obliquely incident flux of source atoms and selective deposition on catalyst islands is achieved by "shadowing effect".  ...  Vapor-liquid-solid (VLS) method has become one of the few and most powerful bottomup single crystal nanowire growth techniques in nanotechnology due to its easy scalability from micro to nano feature sizes  ...  GLAD technique relies on the "shadowing effect," where atoms depositing obliquely on to the substrate may not lower height points on due to the neighboring taller structures.  ... 
doi:10.1557/opl.2011.1005 fatcat:jim5fzgvkbdndf6n4a7ozlnoo4

Interactive editing and modeling of bidirectional texture functions

Jan Kautz, Solomon Boulos, Frédo Durand
2007 ACM Transactions on Graphics  
Directional Height Field The Directional Height Field selection is used to select shadow-and masking-areas based on a given height field, which can be derived with our height field extraction operator.  ...  Height Field The Height Field operator selects all areas that are above or below a certain height threshold.  ... 
doi:10.1145/1239451.1239504 fatcat:px2jafrtujhfhihsaajmbkz3h4

Interactive editing and modeling of bidirectional texture functions

Jan Kautz, Solomon Boulos, Frédo Durand
2007 ACM SIGGRAPH 2007 papers on - SIGGRAPH '07  
Directional Height Field The Directional Height Field selection is used to select shadow-and masking-areas based on a given height field, which can be derived with our height field extraction operator.  ...  Height Field The Height Field operator selects all areas that are above or below a certain height threshold.  ... 
doi:10.1145/1275808.1276443 fatcat:dfohxbokp5hrrnpyjmmmjyyrgi

Interactive editing and modeling of bidirectional texture functions

Jan Kautz, Solomon Boulos, Frédo Durand
2007 ACM Transactions on Graphics  
Directional Height Field The Directional Height Field selection is used to select shadow-and masking-areas based on a given height field, which can be derived with our height field extraction operator.  ...  Height Field The Height Field operator selects all areas that are above or below a certain height threshold.  ... 
doi:10.1145/1276377.1276443 fatcat:bpuudmg4xfbk5br6djuovimv6a

An Efficient 2.5D Shadow Detection Algorithm for Urban Planning and Design Using a Tensor Based Approach

Sukriti Bhattacharya, Christian Braun, Ulrich Leopold
2021 ISPRS International Journal of Geo-Information  
We propose a novel efficient (fast and scalable) algorithm to calculate a 2.5D cast-shadow map from a given LiDAR-derived Digital Surface Model (DSM).  ...  Nevertheless, shadows are the main factor of defeatist virtual settings, they are expensive to render in real-time.  ...  The main idea of horizon mapping is to compute shadows for bump-mapped surfaces by precomputing each height-field visibility.  ... 
doi:10.3390/ijgi10090583 fatcat:hyyrtuqz5ra4rdsnzv37n5y5i4

DESIGN OF THE FUNCTIONAL ENTITIES OF THE BloHeS SYSTEM

Jovan Karamačoski, Liljana Gavrilovska
2022 Journal of Electrical Engineering and Information Technologies  
However, beside the attractive properties, the current Blockchain technologies cannot achieve sufficient scalability to serve a global public healthcare system and cannot provide compatibility with the  ...  The header contains basic fields for a hash value of the previous record, wallet address of the patient, height of the block, version of the standard in use, and a hash value of the current block.  ...  and scalability).  ... 
doi:10.51466/jeeit2271194033k fatcat:cim65jng5vgmtbxzdr6nbzyysi
« Previous Showing results 1 — 15 out of 3,499 results