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Undersampling bandpass modulator architectures

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When Randomness Helps in Undersampling

SIAM Review, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Roel Snieder, Michael B. Wakin
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FIUS: Fixed partitioning undersampling method

Clinica Chimica Acta, 2021
In the medical field, data techniques for prediction and finding patterns of prevalent diseases are of increasing interest. Classification is one of the methods used to provide insight into predicting the future onset of type 2 diabetes of those at high risk of progression from pre-diabetes to diabetes.
Azam, Dekamin, M I M, Wahab, Aziz, Guergachi, Karim, Keshavjee   +3 more
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Regularization for Undersampled Ptychography

OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP), 2021
Ptychography becomes increasingly ill-posed when the overlap between neighboring scan points is reduced, inhibiting the object reconstruction. Here, we discuss and show reconstructions with low-overlap ratios by regularizing with priors such as Total- Variation and Structure-Tensor-Prior.
Prasan Shedligeri, Florian Schiffers, Semih Barutcu, Pablo Ruiz, Aggelos K. Katsaggelos, Oliver Cossairt   +5 more
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Detecting undersampling in surface reconstruction

Proceedings of the seventeenth annual symposium on Computational geometry, 2001
Current surface reconstruction algorithms perform satisfactorily on we ll-sampled, smooth surfaces without boundaries. However, these algorithms face difficulty with undersampling. Cases of undersampling are prevalent in real data since often they sample a part of the boundary of an object, or are derived from a surface with high curvature or ...
Dey, Tamal K., Giesen, Joachim
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Wiener reconstruction of undersampled imagery

Journal of the Optical Society of America A, 2009
We derive a Fourier-domain Wiener filter for the reconstruction of undersampled imagery. The filter differs from previous implementations in that it permits adjustment of the trade-offs between sharpness of the reconstruction, noise amplification, and aliasing artifact suppression.
Samuel T, Thurman, James R, Fienup
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Undersampled Sine Waves

The College Mathematics Journal, 1998
(1998). Undersampled Sine Waves. The College Mathematics Journal: Vol. 29, No. 3, pp. 213-218.
Jean-Claude Derderian, Enriqueta Rodríguez-Carrington   +1 more
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Phase reconstruction from undersampled intensity patterns

Journal of the Optical Society of America A, 2000
We demonstrate the uniqueness and convergence of phase recovery from high-spatial-frequency and undersampled intensity data. Furthermore, this is accomplished without the ambiguities that arise in phase unwrapping and without the need to employ a priori information. The method incorporates the technique of line integration of the phase gradient to find
G, Paez, M, Strojnik
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An Undersampling Digital Microphone

2007 IEEE International Symposium on Circuits and Systems (ISCAS), 2007
As negative feedback in control systems is often not applicable and/or produces undesirable effects, this paper presents the analysis and simulation of a digital microphone using a sigma delta A/D converter comprising of a voltage controlled oscillator (VCO) and sampling D-FF to digitize data.
Sven Soell, Bernd Porr
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