Sökning: "Radon Transform"

Hittade 4 uppsatser innehållade orden Radon Transform.

  1. 1. Parameter Estimation of LPI Radar in Noisy Environments using Convolutional Neural Networks

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Filip Appelgren; [2021]
    Nyckelord :Deep Learning; LPI; Radar; CNN; Parameter estimation; Djupinlärning; LPI; Radar; Faltningsnätverk; Parameterestimering;

    Sammanfattning : Low-probability-of-intercept (LPI) radars are notoriously difficult for electronic support receivers to detect and identify due to their changing radar parameters and low power. Previous work has been done to create autonomous methods that can estimate the parameters of some LPI radar signals, utilizing methods outside of Deep Learning. LÄS MER

  3. 2. Always Look on the Positive-Definite Side of Life

    Master-uppsats, Göteborgs universitet/Institutionen för matematiska vetenskaper

    Författare :Mattias Byléhn; [2020-11-24]
    Nyckelord :Poisson summation; positive-definite distributions; Abel transform; Guinand’s distribution; relatively positive-definite distributions; Krein’s theorem; Krein measures;

    Sammanfattning : This thesis concerns distributions on Rn with the property of being positive-definite relative to a finite subgroup of the orthogonal group O(n). We construct examples of such distributions as the inverse Abel transform of Dirac combs on the geometries of Euclidean space Rn and the real- and complex hyperbolic plane H2, H2 C. LÄS MER

  4. 3. Image Reconstruction Techniques using Kaiser Window in 2D CT Imaging

    Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Md Monowarul Islam; Muftadi Ullah Arpon; [2020]
    Nyckelord :CT Imaging; Parallel-Beam Projection; 2D FFT; Radon Transform; Filters; Window Functions; Kaiser window; Inverse Fourier Transform; FBP.;

    Sammanfattning : The traditional Computed Tomography (CT) is based on the Radon Transform and its inversion. The Radon transform uses parallel beam geometry and its inversion is based on the Fourier slice theorem. LÄS MER

  5. 4. License plate recognition

    Kandidat-uppsats, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad

    Författare :Li Songke; Chen Yixian; [2011]
    Nyckelord :;

    Sammanfattning : This paper presents a method for license plate recognition through analysis of vehicle images. Accurate location of license plate and extracting characters of plate are implemented. In the plate location module, the paper puts forward arithmetic of plate edge recognition by morphology algorithms. LÄS MER