Quaternion generalized Chebyshev-Fourier and pseudo-Jacobi-Fourier moments for color object recognition
Sign Up to like & getrecommendations! Published in 2018 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2018.03.033
Abstract: Abstract In this paper, the classical generalized Chebyshev-Fourier moments (G-CHFMs) and generalized pseudo–Jacobi-Fourier moments (G-PJFMs) have been extended to represent color images using quaternion algebra. The proposed quaternion G-CHFMs (QG-CHFMs) and quaternion G-PJFMs (QG-PJFMs) are… read more here.
Keywords: quaternion; chebyshev fourier; fourier; object recognition ... See more keywords
Extending the theory of propagating fluctuations: The first fully relativistic treatment and analytical Fourier-Green’s functions
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1510
Abstract: The aperiodic variability ubiquitously observed from accreting black hole X-ray binary systems is generally analysed within the framework of the so-called ‘theory of propagating fluctuations’. In this paper we derive the Fourier transforms of the… read more here.
Keywords: propagating fluctuations; theory propagating; hole; fourier ... See more keywords
MIMO Coded Generalized Reduced Dimension Fourier Algorithm for 3-D Microwave Imaging
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2023.3260565
Abstract: In this article, to accelerate data acquisition and image reconstruction procedures in a multistatic short-range microwave imaging scenario, an orthogonal coding approach with Fourier domain processing is presented. First, a special 2-D multiple-input multiple-output (MIMO)… read more here.
Keywords: mimo coded; fourier; microwave imaging; mimo ... See more keywords
Sufficiently Informative and Relevant Features: An Information-Theoretic and Fourier-Based Characterization
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Information Theory"
DOI: 10.1109/tit.2022.3169998
Abstract: A fundamental challenge in learning is the presence of nonlinear redundancies and dependencies in the data. To address this, we propose a Fourier-based approach to characterize feature redundancies, in unsupervised learning, and feature-label dependencies, in… read more here.
Keywords: fourier based; sufficiently informative; fourier; feature ... See more keywords
Optimization of waveform design in the fractional Fourier domain to improve the cognitive radar system
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Remote Sensing"
DOI: 10.1117/1.jrs.11.015004
Abstract: Abstract. We investigate optimal waveform design using fractional Fourier transform in signal-dependent interference, as well as additive channel noise for stochastic extended target. Within constraints on waveform energy and bandwidth, optimal waveform design in fractional… read more here.
Keywords: fourier; waveform design; fourier domain; fractional fourier ... See more keywords
Compact reconstruction of a Fourier hologram for a 3D object by scaling compensation.
Sign Up to like & getrecommendations! Published in 2023 at "Applied optics"
DOI: 10.1364/ao.481244
Abstract: The Fourier holographic projection method is compact and computationally fast. However, since the magnification of the displayed image increases with the diffraction distance, this method cannot be used directly to display multi-plane three-dimensional (3D) scenes.… read more here.
Keywords: compact reconstruction; fourier; scaling compensation; method ... See more keywords