Výsledky vyhľadávania - ML and EM algorithms

EM-Based Joint Channel Estimation and IQ Imbalances for OFDM Systems Autor Marey, M., Samir, M., Dobre, O. A.

“… occurring at both the transmitter and receiver. Starting from the Maximum Likelihood (ML) principle, we derive an estimation algorithm based on the expectation maximization (EM…”
Získať plný text

A tailored ML-EM algorithm for reconstruction of truncated projection data using few view angles Autor Mao, Yanfei, Zeng, Gengsheng L

“…) algorithm to reconstruct images from the truncated data with a small number of views. In this note, we propose a tailored ML-EM algorithm to suppress the artifacts…”
Zistit podrobnosti o prístupe

Superiorization of the ML-EM Algorithm Autor Garduno, Edgar, Herman, Gabor T.

“… The expectation maximization (EM) methodology leads to an iterative algorithm, called ML-EM, that converges in the limit to an image that maximizes this likelihood…”
Získať plný text

ML-EM algorithm for dose estimation using PET in proton therapy Autor Masuda, Takamitsu, Nishio, Teiji, Kataoka, Jun, Arimoto, Makoto, Sano, Akira, Karasawa, Kumiko

“…) expectation maximization (EM) algorithm combined with filtering. In experiments to verify the effectiveness of the proposed method, mono-energetic and spread-out Bragg…”
Zistit podrobnosti o prístupe

Extension of the ML-EM algorithm for dose estimation using PET in proton therapy: application to an inhomogeneous target Autor Masuda, Takamitsu, Nishio, Teiji, Sano, Akira, Karasawa, Kumiko

“… In this study, a method for estimating the dose distribution from the positron emitter distributions was developed using the maximum likelihood expectation maximization algorithm…”
Zistit podrobnosti o prístupe

A novel IQ imbalance and channel estimation algorithm for Alamouti OFDM systems Autor Marey, Mohamed, Samir, Moataz Shoukry, Ahmed, Mohamed Hossam, El-Shenawy, Hamed, Elhennawy, Adel

“… In addition, we propose a novel iterative algorithm to jointly estimate the channel impulse response (CIR…”
Získať plný text

Statistical Model and ML-EM Algorithm for Emission Tomography with Known Movement Autor Pouchol, Camille, Verdier, Olivier

“…)-type algorithm which recovers the classical ML-EM algorithm as a particular case for a static phantom. The algorithm is proved to be monotone and convergent in the low-noise regime. Simulations confirm that it correctly removes the blur that would have occurred if movement were neglected…”
Získať plný text

CT image reconstruction: integrating iterative methods with Ml-EM algorithm and deep learning models Autor Pham, Cong Thang, Tran, Thi Thu Thao, Huynh, Duc Anh Bao, Nguyen, Quoc Cuong, Nguyen, Tien Hung

“… (Convolutional Neural Networks and UNet) with the Maximum Likelihood Expectation Maximization (ML-EM) algorithm and the Enhanced Super-Resolution Generative Adversarial Networks…”
Získať plný text

A simple convergence proof of the ML-EM algorithm in the presence of background emission Autor Bertero, Mario, De Mol, Christine

“…For data obeying a Poisson statistics, the ML-EM (“Maximum Likelihood - Expectation Maximization…”
Získať plný text

The ML-EM Algorithm is Not Optimal for Poisson Noise Autor Zeng, Gengsheng L.

“…The ML-EM (maximum likelihood expectation maximization) algorithm is the most popular image reconstruction method when the measurement noise is Poisson distributed…”
Získať plný text

Comparison of ML–EM algorithm and ART for reconstruction of gas hold-up profile in a bubble column Autor Patel, Ashutosh K., Patwardhan, Ashwin W., Thorat, Bhaskar N.

“…Algebraic reconstruction technique (ART) and maximum likelihood–expectation maximization (ML–EM…”
Získať plný text

The ML-EM algorithm is not optimal for poisson noise Autor Zeng, Gengsheng L.

“…The ML-EM (maximum likelihood expectation maximization) algorithm is the most popular image reconstruction method when the measurement noise is Poisson distributed…”
Získať plný text

Event reconstruction in NEXT using the ML-EM algorithm Autor Simón, A., Ferrario, P., Izmaylov, A.

“…) in the data processing scheme. ML-EM is a generic iterative algorithm for many kinds of inverse problems…”
Získať plný text

Convergence analysis of an accelerated expectation-maximization algorithm for ill-posed integral equations Autor Geng, Chuanxing, Wang, Jinping

“…The maximum‐likelihood expectation‐maximization (EM) algorithm has attracted considerable interest in single…”
Získať plný text

Alternatives to the EM algorithm for ML estimation of location, scatter matrix, and degree of freedom of the Student t distribution Autor Hasannasab, Marzieh, Hertrich, Johannes, Laus, Friederike, Steidl, Gabriele

“…In this paper, we consider maximum likelihood estimations of the degree of freedom parameter ν , the location parameter μ and the scatter matrix Σ of the…”
Získať plný text

Filtered backprojection algorithm can outperform iterative maximum likelihood expectation-maximization algorithm Autor Zeng, Gengsheng L.

“…The iterative maximum‐likelihood expectation‐maximization (ML‐EM) algorithm is an excellent algorithm for image reconstruction and usually provides better images than the filtered backprojection (FBP) algorithm…”
Získať plný text

Interior and Sparse-View Image Reconstruction Using a Mixed Region and Voxel-Based ML-EM Algorithm Autor Jingyan Xu, Tsui, B. M. W.

“… The image reconstruction is provided by a mixed region and voxel based Poisson likelihood ML-EM algorithm that takes care of the photon statistics and the uniform attenuation effect in emission tomography…”
Získať plný text

Application of the ML-EM algorithm in the suppression of Compton background of gamma-ray spectroscopy system Autor Hoang, Sy Minh Tuan, Sun, Gwang Min, Baek, Hani, Kim, Jiseok

“…In the present study, the Compton background of the measured gamma-ray spectrum was suppressed by using the deconvolution method with applying the maximum likelihood fitting by expectation maximization (ML-EM) algorithm…”
Získať plný text

Correction to: Alternatives to the EM algorithm for ML estimation of location, scatter matrix, and degree of freedom of the Student t distribution Autor Hasannasab, Marzieh, Hertrich, Johannes, Laus, Friederike, Steidl, Gabriele

“…A Correction to this paper has been published: https://doi.org/10.1007/s11075-021-01156-z…”
Získať plný text

Convergence study of an accelerated ML-EM algorithm using bigger step size Autor Hwang, DoSik, Zeng, Gengsheng L

“…In SPECT/PET, the maximum-likelihood expectation-maximization (ML-EM) algorithm is getting more attention as the speed of computers increases…”
Zistit podrobnosti o prístupe