Results 21 to 30 of about 1,206 (204)
Frontiers in Physics, 2023 Detective quantum efficiency (DQE) is a prominent figure of merit for imaging detectors, and its optimization is of fundamental importance for the efficient use of the experimental apparatus.
P. Zambon
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Improved centroids estimation for the nearest shrunken centroid classifier [PDF]
Bioinformatics, 2007 AbstractMotivation: The nearest shrunken centroid (NSC) method has been successfully applied in many DNA-microarray classification problems. The NSC uses ‘shrunken’ centroids as prototypes for each class and identifies subsets of genes that best characterize each class. Classification is then made to the nearest (shrunken) centroid.
Sijian Wang, Ji Zhu
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Digital Sun Sensor Multi-Spot Operation
Sensors, 2012 The operation and test of a multi-spot digital sun sensor for precise sun-line determination is described. The image forming system consists of an opaque mask with multiple pinhole apertures producing multiple, simultaneous, spot-like images of the sun ...
Michele Grassi, Giancarlo Rufino
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Photon counting imaging and centroiding with an electron-bombarded CCD using single molecule localisation software [PDF]
, 2016 Photon event centroiding in photon counting imaging and single-molecule localisation in super-resolution fluorescence microscopy share many traits. Although photon event centroiding has traditionally been performed with simple single-iteration algorithms,
Hirvonen, Liisa Maija; id_orcid +4 more
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Generalized centroid of hyperrings
Discussiones Mathematicae - General Algebra and Applications, 2022 In this paper, the notion of generalized centroid is applied to hyperrings. We show that the generalized centroid C of a semiprime hyperring R is a regular hyperring. Also, we show that if C is a hyperfield, then R is a prime hyperring.
Yazarli, Hasret +2 more
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Pseudo-centroid clustering [PDF]
Soft Computing, 2016 Pseudo-Centroid Clustering replaces the traditional concept of a centroid expressed as a center of gravity with the notion of a pseudo-centroid (or a coordinate free centroid) which has the advantage of applying to clustering problems where points do not have numerical coordinates (or categorical coordinates that are translated into numerical form ...
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Engineering, 2023 Subpixel localization techniques for estimating the positions of point-like images captured by pixelated image sensors have been widely used in diverse optical measurement fields.
Haiyang Zhan +6 more
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Untargeted Metabolomics Coupled With Machine Learning Unravels Crop-Specific Versus Generalized Effects of Biostimulants in Cucumber, Pepper, and Tomato. [PDF]
Physiol PlantABSTRACT In recent years, agricultural practices have shifted toward sustainability, aiming to reduce the use of agrochemicals and rely more on bio‐based solutions. However, the effectiveness of these latter suffers from inconsistency. Understanding how different crops respond to biostimulants, instead of referring to a specific trial or crop, is a ...
Salehi H, García-Pérez P, Lucini L.
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The Measurement of PSF Ellipticity of an Unobstructed Off-Axis Space Telescope: Error Analysis
IEEE Access, 2021 It is an effective method to detect weak gravitational lensing (WL) in the universe by measuring ellipticities of galaxies via astronomical telescopes. Optical properties of telescopes are critical to WL detections.
Kuo Fan +4 more
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