TESTING MOBILE PHONE APPLICATIONS FOR PHOTOGRAMMETRICAL 3D RECONSTRUCTION OF OBJECTS USING IMAGE CORRELATION METHOD

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-12-4 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 3, 319-326 pp

ABSTRACT
Mobile phones have become a part of everyday’s life in the 21st century, this piece of hardware can be found in almost every pocket all around the world. The evolution of mobile phone applications is a key issue to many IT specialists and developers. These applications are cheap and available for everyone with a smartphone and an internet access. Nowadays, mobile phone applications have also been developed for 3D reconstruction of objects. It is very simple, one can make fine 3D model of desired object (for example building) with just a few clicks on the phone. Thanks to improvements in computer technology, automatic reconstruction of urban 3D models is an important part of photogrammetrical research in last decades. 3D modelling and visualizations are widely used for urban drafts and their creation has become a developers standard. In this paper, we focus on testing an optical performance of today’s mobile phones for the purpose of the 3D reconstruction of the objects by using image correlation methods. Two objects were captured by a mobile phone and the images were processed with a photogrammetrical application for image correlation, resulting in a virtual 3D model. The 3D model of one of the objects was then compared to "ground truth", given by a laser scanning technique with a high accuracy scanner.

Keywords: Image-based modelling, auto-correlation, mobile phone application, 3D model creation