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Quadrature prefiltering for high quality antialiasing

Brian Guenter, Jack Tumblin
1996 ACM Transactions on Graphics  
It renders very high quality images at reasonable cost, strongly suppressing aliasing artifacts.  ...  This article introduces quadrature prefiltering, an accurate, efficient, and fairly simple algorithm for prefiltering polygons for scanline rendering.  ...  For these algorithms, prefiltering can provide a level of antialiasing performance only achievable with very high supersampling rates.  ... 
doi:10.1145/234535.234540 fatcat:ahdoey6cajgynekzec2xaoizdu

Image hallucination with feature enhancement

Zhiwei Xiong, Xiaoyan Sun, Feng Wu
2009 2009 IEEE Conference on Computer Vision and Pattern Recognition  
Experiments demonstrate our super-resolution scheme with feature enhancement produces high quality results both perceptually and quantitatively.  ...  A feature enhancement method is presented through a combination of interpolation with prefiltering and non-blind sparse prior deblurring.  ...  Quadrature prefiltering for antialiasing As the decimation factor increases, aliasing tends to be severe if the blurring scale is fixed.  ... 
doi:10.1109/cvpr.2009.5206630 dblp:conf/cvpr/XiongSW09 fatcat:pf6wpf3d7jglpnfvqwcwk6oudm

Flexible Analog Front Ends of Reconfigurable Radios Based on Sampling and Reconstruction with Internal Filtering

Yefim S Poberezhskiy, Gennady Y Poberezhskiy
2005 EURASIP Journal on Wireless Communications and Networking  
Bandpass sampling, reconstruction, and antialiasing filtering in analog front ends potentially provide the best performance of software defined radios.  ...  However, conventional techniques used for these procedures limit reconfigurability and adaptivity of the radios, complicate integrated circuit implementation, and preclude achieving potential performance  ...  An increase of f s /B simplifies antialiasing filtering and allows reduction of L or accuracy of multiplications for a given quality of filtering [20] .  ... 
doi:10.1155/wcn.2005.364 fatcat:z4q23epurfcg3nzs7xamljpvp4

Antialiasing with Line Samples [chapter]

Thouis R. Jones, Ronald N. Perry
2000 Eurographics  
Antialiasing is a necessary component of any high quality renderer.  ...  Line sampling provides high quality antialiasing at significantly lower cost than analytic methods while avoiding the visual artifacts caused by supersampling's discontinuous nature.  ...  After taking into account transformations, shading, and other calculations independent of the antialiasing method, line sampling becomes a viable alternative for achieving high quality antialiasing without  ... 
doi:10.1007/978-3-7091-6303-0_18 fatcat:7j56mw4xtvbrtkzln25d4xo6xe

Linear efficient antialiased displacement and reflectance mapping

Jonathan Dupuy, Eric Heitz, Jean-Claude Iehl, Pierre Poulin, Fabrice Neyret, Victor Ostromoukhov
2013 ACM Transactions on Graphics  
Figure 1 : A high-quality animated production model (Ptex T-rex model c Walt Disney Animation Studios.) rendered in real time under directional and environment lighting using LEADR mapping on an NVidia  ...  Combined with adaptive GPU tessellation, our method provides the fastest, seamless, and antialiased progressive representation for displaced surfaces.  ...  Acknowledgements The authors would like to sincerely thank Brent Burley and Disney for giving access to the T-rex model and its detailed textures.  ... 
doi:10.1145/2508363.2508422 fatcat:bmm3azfhwzbsxct24tlg37dxvu


2005 Journal of Environmental Engineering (Transactions of AIJ)  
Appropriate different method for each step can optimizes image quality andcalculation time . Kepvords : 3」Dimensional Com ρ uter (  ...  This paper proposes a new antialiasing algorism that keeps image quality and speeds calculatien up .  ...  Cemputer Graphics , voL29 , nQ . 3, 429 − 436, August l995 10 ) Guenter , B . and Tumb } in, 」. , Quadrature Prefiltering for High Quality  ... 
doi:10.3130/aije.70.123 fatcat:svmttsmmcnbt7cc3u6wnfp6dce

Sensor Signal Conditioning for Biomedical Instrumentation [chapter]

Tomas Ward
2015 Telehealth and Mobile Health  
good-quality, clean data (Kappenman and Luck, 2013) .  ...  For uncorrelated noise sources, we add these noise components in quadrature (Moore and McCabe, 1999) to get the total power in the measurement.  ... 
doi:10.1201/b19147-33 fatcat:e67y7p7pcnffvp6nnhct7lghwm

Comparing spectral color computation methods

R. Hall
1999 IEEE Computer Graphics and Applications  
Special thanks goes to Kells Elmquist for numerous discussions, suggestions, and reviews of this work.  ...  I thank Hewlett Packard for the generous grants to the Program of Computer Graphics that provided the equipment that supported parts of this work.  ...  Meyer also suggested that prefiltering spectral functions might be helpful for "spiky" spectral functions such as those of light sources.  ... 
doi:10.1109/38.773962 fatcat:2edmlfsqmjeu5kpgkvsfov2r2y

Mip-NeRF: A Multiscale Representation for Anti-Aliasing Neural Radiance Fields [article]

Jonathan T. Barron, Ben Mildenhall, Matthew Tancik, Peter Hedman, Ricardo Martin-Brualla, Pratul P. Srinivasan
2021 arXiv   pre-print
The straightforward solution of supersampling by rendering with multiple rays per pixel is impractical for NeRF, because rendering each ray requires querying a multilayer perceptron hundreds of times.  ...  Acknowledgements We thank Janne Kontkanen and David Salesin for their comments on the text, Paul Debevec for constructive discussions, and Boyang Deng for JaxN-eRF.  ...  Reducing aliasing artifacts ("antialiasing") is typically done via either supersampling or prefiltering.  ... 
arXiv:2103.13415v3 fatcat:he6gfwmfore4nmzo3snpbm6woi

A 300–800 MHz Tunable Filter and Linearized LNA Applied in a Low-Noise Harmonic-Rejection RF-Sampling Receiver

Z. Ru, Eric A M Klumperink, Carlos E Saavedra, Bram Nauta
2010 IEEE Journal of Solid-State Circuits  
This work exploits a voltage-sensing LNA preceded by a tunable LC pre-filter with one external coil to demonstrate an RF-sampling receiver with low noise figure (NF) and high harmonic rejection (HR).  ...  from University of Twente for their valuable assistance.  ...  ACKNOWLEDGMENT The authors would like to thank Freeband Communications for research funding, and NXP Semiconductors for chip fabrication, especially Domine Leenaerts, and Gerard Wienk and Henk de Vries  ... 
doi:10.1109/jssc.2010.2041403 fatcat:3hretshrlreznbclwkzapfgxya

PSpice for Digital Communications Engineering

Paul Tobin
2007 Synthesis Lectures on Digital Circuits and Systems  
Companding is addressed here and we look at the A and mu law characteristics for achieving better signal to quantization noise ratios.  ...  Fourier series and Fourier transform are applied to signals to set the ground work for the modulation techniques introduced in later chapters.  ...  Chapter 5 considers multi-level systems (M-ary) such as quadrature phase shift keying (QPSK) and quadrature amplitude modulation (QAM).  ... 
doi:10.2200/s00072ed1v01y200612dcs010 fatcat:fisfobjh4bhfzjsiyjrekk36aa

Fast volume rendering using a shear-warp factorization of the viewing transformation

Philippe Lacroute, Marc Levoy
1994 Proceedings of the 21st annual conference on Computer graphics and interactive techniques - SIGGRAPH '94  
It has applications in areas such as medical imaging and scientific visualization, but its use has been limited by its high computational expense.  ...  Volume rendering is a technique for visualizing 3D arrays of sampled data.  ...  The 2D resampling filter is an approximation, but high-quality images can still be produced if the input volume has a high resolution.  ... 
doi:10.1145/192161.192283 dblp:conf/siggraph/LacrouteL94 fatcat:yz67q4na75eeben46bou3gwupm

Active noise control: a tutorial review

S.M. Kuo, D.R. Morgan
1999 Proceedings of the IEEE  
Current applications for ANC include attenuation of unavoidable noise in the following end equipment. 1) Automotive: Including electronic mufflers for exhaust and induction systems, noise attenuation inside  ...  In this paper, the basic adaptive algorithm for ANC is developed and analyzed based on single-channel broad-band feedforward control.  ...  These passive silencers are valued for their high attenuation over a broad frequency range; however, they are relatively large, costly, and ineffective at low frequencies.  ... 
doi:10.1109/5.763310 fatcat:uvjlluuhbzdbpo6wr4kjj4mvea

Evolvable Smartphone-Based Point-Of-Care Systems For In-Vitro Diagnostics

François Patou
2016 Zenodo  
One necessary condition, is for change-absorbing and change-enabling mechanisms to be incorporated in the platform architecture at initial design-time.  ...  Lab-on-Chip technologies coupled with smart-devices in particular, constitute key enablers for the decentralization of many in-vitro medical diagnostics applications to the point-of-care, supporting the  ...  Although we acknowledge the importance of generating a high-quality reference signal in order to limit lock-in acquisition errors or for applications requiring low THD excitation signals, we were compelled  ... 
doi:10.5281/zenodo.204579 fatcat:okesojvyjjghpntsmb676lvsh4

Quantum stochastic communication with photon-number squeezed light

Joshua Paramanandam
Of course, the eavesdropper cannot simultaneously measure both quadratures with infinite precision for each.  ...  The research investigates the generation of photon number squeezed light from high efficiency light emitting diodes. A measurement setup for subshot noise is constructed and eac [...]  ...  If the DAQ sampling rate was 50kS/s. the amplifier would serves as a gain as well as an antialiasing prefilter to the DAQ card [48] and we could take the ENB of 39kHz which we measured earlier.  ... 
doi:10.7282/t3kp82j9 fatcat:kzcziz4me5bxfe3yek5fp26s7m