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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ISPRS-Annals</journal-id>
<journal-title-group>
<journal-title>ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences</journal-title>
<abbrev-journal-title abbrev-type="publisher">ISPRS-Annals</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">2194-9050</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/isprs-annals-III-3-59-2016</article-id>
<title-group>
<article-title>TEXTURE-AWARE DENSE IMAGE MATCHING USING TERNARY CENSUS TRANSFORM</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Hu</surname>
<given-names>Han</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Chen</surname>
<given-names>Chongtai</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Wu</surname>
<given-names>Bo</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Yang</surname>
<given-names>Xiaoxia</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Zhu</surname>
<given-names>Qing</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Ding</surname>
<given-names>Yulin</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hum Hong, Kowloon, Hong Kong</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Faculty of Geosciences and Environmental Engineering，Southwest Jiaotong University, Gaoxin West District, Chengdu, China</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>Collaborative Innovation Center for Geospatial Technology, 129 Luoyu Road, Wuhan, China</addr-line>
</aff>
<pub-date pub-type="epub">
<day>03</day>
<month>06</month>
<year>2016</year>
</pub-date>
<volume>III-3</volume>
<fpage>59</fpage>
<lpage>66</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2016 Han Hu et al.</copyright-statement>
<copyright-year>2016</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/3.0/">https://creativecommons.org/licenses/by/3.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://isprs-annals.copernicus.org/articles/III-3/59/2016/isprs-annals-III-3-59-2016.html">This article is available from https://isprs-annals.copernicus.org/articles/III-3/59/2016/isprs-annals-III-3-59-2016.html</self-uri>
<self-uri xlink:href="https://isprs-annals.copernicus.org/articles/III-3/59/2016/isprs-annals-III-3-59-2016.pdf">The full text article is available as a PDF file from https://isprs-annals.copernicus.org/articles/III-3/59/2016/isprs-annals-III-3-59-2016.pdf</self-uri>
<abstract>
<p>Textureless and geometric discontinuities are major problems in state-of-the-art dense image matching methods, as they can cause visually significant noise and the loss of sharp features. Binary census transform is one of the best matching cost methods but in textureless areas, where the intensity values are similar, it suffers from small random noises. Global optimization for disparity computation is inherently sensitive to parameter tuning in complex urban scenes, and must compromise between smoothness and discontinuities. The aim of this study is to provide a method to overcome these issues in dense image matching, by extending the industry proven Semi-Global Matching through 1) developing a ternary census transform, which takes three outputs in a single order comparison and encodes the results in two bits rather than one, and also 2) by using texture-information to self-tune the parameters, which both preserves sharp edges and enforces smoothness when necessary. Experimental results using various datasets from different platforms have shown that the visual qualities of the triangulated point clouds in urban areas can be largely improved by these proposed methods.</p>
</abstract>
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