2D Gradient Algorithms for Noise Reduction in Radiological Images

In areas such as biomedical image processing, the techniques or methods used to recover the content in noise-contaminated signals are essential. One of them has been adaptive filtering, which, by adjusting to the desired signal through real-time updating of the coefficients, allows improvement and d...

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Bibliographic Details
Main Authors: Collazos-Ramírez, Jhonatan, Jojoa, Pablo-Emilio, Hoyos, Juan-Pablo
Format: Online
Language:eng
Published: Universidad Pedagógica y Tecnológica de Colombia 2023
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Online Access:https://revistas.uptc.edu.co/index.php/ingenieria/article/view/16178
Description
Summary:In areas such as biomedical image processing, the techniques or methods used to recover the content in noise-contaminated signals are essential. One of them has been adaptive filtering, which, by adjusting to the desired signal through real-time updating of the coefficients, allows improvement and deconvolution in the recovery of degraded or contaminated images, attracting the attention of researchers in inverse problems. In this paper, the 2D-AR  gradient algorithm is used in noise reduction in dental radiological images, for which simulations are performed to obtain the best configuration of the hyperparameters, and a statistical analysis of the values obtained is performed. Based on the simulation results and the established metrics, it is demonstrated that the algorithm achieves a slightly higher noise reduction than the other 2D gradient algorithms (LMS and NLMS).