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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 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-5-89-2016</article-id>
<title-group>
<article-title>MOTORIZED PANORAMIC CAMERA
MOUNT &amp;ndash; CALIBRATION AND IMAGE CAPTURE</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Kauhanen</surname>
<given-names>H.</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>Rönnholm</surname>
<given-names>P.</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>Lehtola</surname>
<given-names>V. V.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Aalto University, Department of Built Environment, Po. Box 15800, 00076 AALTO, Finland</addr-line>
</aff>
<pub-date pub-type="epub">
<day>06</day>
<month>06</month>
<year>2016</year>
</pub-date>
<volume>III-5</volume>
<fpage>89</fpage>
<lpage>96</lpage>
<permissions>
<license license-type="open-access">
<license-p/>
</license>
</permissions>
<self-uri xlink:href="https://isprs-annals.copernicus.org/articles/isprs-annals-III-5-89-2016.html">This article is available from https://isprs-annals.copernicus.org/articles/isprs-annals-III-5-89-2016.html</self-uri>
<self-uri xlink:href="https://isprs-annals.copernicus.org/articles/isprs-annals-III-5-89-2016.pdf">The full text article is available as a PDF file from https://isprs-annals.copernicus.org/articles/isprs-annals-III-5-89-2016.pdf</self-uri>
<abstract>
<p>interesting applications. Among the large variation of panoramic camera systems, we have focused on concentric panoramic imaging
with a frame camera. In order to establish the concentric image acquisition, the camera mount must be calibrated so that the projection
centre of the camera is located at the rotation centre of the mount. For this purpose, we developed a novel mount calibration method,
which allows an accurate recovery of the rotation centre in two image acquisition steps. In addition, we have built a motorized camera
mount that can self-calibrate the camera position within the mount, given the previously solved rotation centre, and then be used to
automatically capture panoramic images. Hence, we have streamlined the previously laborious manual phase of iterative position
calibration, but also automated the capturing of panoramic images. For validation purposes, reference results from a conventional
manual mount are provided. In the case of non-motorized mount, the average distance between the projection centre of the camera and
the rotation centre of the mount was 0.253 mm and the standard deviation was 0.161 mm. For the motorized mount, the corresponding
average distance and standard deviation were 0.549 mm and 0.404 mm, respectively.</p>
</abstract>
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