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<article article-type="research-article">
  <front>
    <journal-meta>
      <journal-id journal-id-type="aggregator">72010604</journal-id>
      <journal-title>Electronic Imaging</journal-title>
      <issn pub-type="ppub">2470-1173</issn><issn pub-type="epub"></issn>
      <publisher>
        <publisher-name>Society for Imaging Science and Technology</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.2352/ISSN.2470-1173.2018.13.IPAS-383</article-id>
      <article-id pub-id-type="sici">2470-1173(20180128)2018:13L.3831;1-</article-id>
      <article-id pub-id-type="publisher-id">s17.phd</article-id>
      <article-id pub-id-type="other">/ist/ei/2018/00002018/00000013/art00017</article-id>
      <article-categories>
        <subj-group>
          <subject>Articles</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Color Facial Image Representation with New Quaternion Gradients</article-title>
      </title-group>
      <contrib-group>
        <contrib>
          <name>
            <surname>Grigoryan</surname>
            <given-names>Artyom</given-names>
          </name>
        </contrib>
        <contrib>
          <name>
            <surname>Agaian</surname>
            <given-names>Sos</given-names>
          </name>
        </contrib>
      </contrib-group>
      <pub-date>
        <day>28</day>
        <month>01</month>
        <year>2018</year>
      </pub-date>
      <volume>2018</volume>
      <issue>13</issue>
      <fpage>383-1</fpage>
      <lpage>383-7</lpage>
      <permissions>
        <copyright-year>2018</copyright-year>
      </permissions>
      <abstract>
        <p>This paper proposes a new color image representation and multiple feature fusion based method for improving color face recognition performance under different lighting conditions. First, a new image color image representation has been derived. Second, a quaternion gradient has been
 given to enhance and extract the faces/object's edges, contours, and texture. Also, we propose a novel feature representation based on Quaternion Gradient-based LBP tool for color face recognition. Finally, we present a concept of combining the color facial recognition system, which is based
 on the local quaternion gradients based binary patterns LBP Image Representation, and a new color-to-gray new mapping. The presented concept can be used for surveillance, security systems, computer animation, face tagging, human–computer interface, biometric identification, behavioral
 analysis, content-based image and video indexing applications.</p>
      </abstract>
      <kwd-group>
        <kwd>color facial image representation</kwd>
        <kwd>quaternion gradients</kwd>
        <kwd>local binary patterns</kwd>
        <kwd>facial image processing</kwd>
        <kwd>visibility images</kwd>
      </kwd-group>
    </article-meta>
  </front>
</article>
