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            <title xml:lang="en">Influence of Ambiguity Cluster on Quality Improvement in Image Compression</title>
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                <forename type="first">Safaa</forename>
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                <forename type="first">Ahmad</forename>
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                <forename>Safaa</forename>
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            <idno type="halRefHtml">&lt;i&gt;ICCVISP- International Conference on Computer Vision, Image and Signal Processing&lt;/i&gt;, Feb 2013, Barcelone, Spain. &lt;a target="_blank" href="https://dx.doi.org/10.5281/zenodo.1073446"&gt;&amp;#x27E8;10.5281/zenodo.1073446&amp;#x27E9;&lt;/a&gt;</idno>
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                <title xml:lang="en">Influence of Ambiguity Cluster on Quality Improvement in Image Compression</title>
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                  <persName>
                    <forename type="first">Safaa</forename>
                    <surname>Al-Ali</surname>
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                    <forename type="first">Ahmad</forename>
                    <surname>Shahin</surname>
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                <author role="aut">
                  <persName>
                    <forename type="first">Fadi</forename>
                    <surname>Chakik</surname>
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                  <title>ICCVISP- International Conference on Computer Vision, Image and Signal Processing</title>
                  <date type="start">2013-02-27</date>
                  <date type="end">2013-02-28</date>
                  <settlement>Barcelone</settlement>
                  <country key="ES">Spain</country>
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                <term xml:lang="en">Ambiguity Cluster</term>
                <term xml:lang="en">Anisotropic Diffusion</term>
                <term xml:lang="en">Fuzzy Clustering</term>
                <term xml:lang="en">Image Compression.</term>
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              <p>Image coding based on clustering provides immediate access to targeted features of interest in a high quality decoded image. This approach is useful for intelligent devices, as well as for multimedia content-based description standards. The result of image clustering cannot be precise in some positions especially on pixels with edge information which produce ambiguity among the clusters. Even with a good enhancement operator based on PDE, the quality of the decoded image will highly depend on the clustering process. In this paper, we introduce an ambiguity cluster in image coding to represent pixels with vagueness properties. The presence of such cluster allows preserving some details inherent to edges as well for uncertain pixels. It will also be very useful during the decoding phase in which an anisotropic diffusion operator, such as Perona-Malik, enhances the quality of the restored image. This work also offers a comparative study to demonstrate the effectiveness of a fuzzy clustering technique in detecting the ambiguity cluster without losing lot of the essential image information. Several experiments have been carried out to demonstrate the usefulness of ambiguity concept in image compression. The coding results and the performance of the proposed algorithms are discussed in terms of the peak signal-to-noise ratio and the quantity of ambiguous pixels.</p>
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