<?xml version="1.0" encoding="UTF-8"?>
<article article-type="Research Article">
  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher">journal-of-information-and-optimization-sciences</journal-id>
      <journal-title-group>
        <journal-title>Journal of Information and Optimization Sciences</journal-title>
      </journal-title-group>
      <issn publication-format="electronic">2169-0103</issn>
      <issn publication-format="print">0252-2667</issn>
      <publisher>
        <publisher-name>Taru Publications</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.47974/JIOS-2163</article-id>
      <title-group>
        <article-title>Hybrid frequency-domain and machine learning framework for image noise classification and adaptive restoration</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Jain</surname>
            <given-names>Aakanksha</given-names>
          </name>
          <aff>Faculty of Computer Science Engineering, GLS University, Ahmedabad, Gujarat, 380006, India</aff>
        </contrib>
        <contrib contrib-type="author" corresp="yes">
          <name>
            <surname>Arolkar</surname>
            <given-names>Harshal</given-names>
          </name>
          <aff>Faculty of Computer Applications &amp; Information Technology, GLS University, Ahmedabad, Gujarat, 380006, India</aff>
        </contrib>
      </contrib-group>
      <volume>47</volume>
      <issue>7</issue>
      <fpage>2619</fpage>
      <lpage>2633</lpage>
      <pub-date date-type="pub">
        <day>31</day>
        <month>07</month>
        <year>2026</year>
      </pub-date>
      <abstract>
        <p>Classification and restoration of envision noise are important problems in digital image processing that affect computer vision, medical imaging, and multimedia applications. This paper presents a sophisticated framework that addresses many noise types, such as Gaussian noise, impulse noise, motion blur, and speckle noise, by combining frequency-domain analysis, machine learning, and customized restoration algorithms. The method captures unique noise signatures by using the Discrete Cosine Transform (DCT), Discrete Fourier Transform (DFT) and the Fast Fourier Transform (FFT) to extract subtle frequency-domain properties. Several classifiers are investigated to achieve accurate noise type detection. A thorough assessment of the framework’s flexibility and scalability is provided by this dataset, which includes a variety of distortions and noise levels.Adaptive, noise-specific filtering algorithms that are in line with the recognized noise type are used by the system for noise restoration. A combination of bilateral and Gaussian filters is used to handle Gaussian noise, and sophisticated median and outlier-suppression techniques are used to recover impulse noise. Adaptive and wavelet-based filters reduce speckle noise, whereas Wiener filtering and deconvolution are used to fix motion blur.Superior performance is demonstrated by extensive experimental data, which show notable gains in classification accuracy, structural similarity index measure (SSIM), and peak signal-to-noise ratio (PSNR). By establishing a comprehensive pipeline for reliable noise classification and restoration, this study shows how machine learning and frequency-domain analysis can be used to address practical issues in image quality improvement.</p>
      </abstract>
      <kwd-group>
        <kwd>Noise classification</kwd>
        <kwd>Frequency domain analysis</kwd>
        <kwd>Discrete domain analysis</kwd>
        <kwd>Hybrid features</kwd>
        <kwd>Image quality improvement</kwd>
        <kwd>Noise restoration</kwd>
      </kwd-group>
      <custom-meta-group>
        <custom-meta>
          <meta-name>access</meta-name>
          <meta-value>open</meta-value>
        </custom-meta>
        <custom-meta>
          <meta-name>retracted</meta-name>
          <meta-value>no</meta-value>
        </custom-meta>
      </custom-meta-group>
    </article-meta>
  </front>
</article>
