A new approach to real-time mosaicing of aerial images |
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Affiliation: | Sabanci University, Faculty of Engineering and Natural Sciences, Orhanli-Tuzla 34956, Istanbul, Turkey;Center for Geographic Information Science and Geography Department, Central Michigan University, Mt. Pleasant, MI 48859;Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota;St Petersburg, Russia;Instituto de Investigación en Ingeniería de Aragón, Universidad de Zaragoza, C/ María de Luna 1, E-50018 Zaragoza, Spain;Institut Pascal, Institut Français de Mécanique Avancée, 24 avenue des landais, 63 177 Aubière Cedex, France |
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Abstract: | We present a new image mosaicing technique that uses sequential aerial images captured from a camera and is capable of creating consistent large scale mosaics in real-time. To find the alignment of every new image, we use all the available images in the mosaic that have intersection with the new image instead of using only the previous one. To detect image intersections in an efficient manner, we utilize ‘Separating Axis Theorem’, a geometric tool from computer graphics which is used for collision detection. Moreover, after a certain number of images are added to the mosaic, a novel affine refinement procedure is carried out to increase global consistency. Finally, gain compensation and multi-band blending are optionally used as offline steps to compensate for photometric defects and seams caused by misregistrations. Proposed approach is tested on some public datasets and it is compared with two state-of-the-art algorithms. Results are promising and show the potential of our algorithm in various practical scenarios. |
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Keywords: | Image mosaicing Bundle adjustment MLESAC Separating axis theorem Affine refinement Multi-band blending Gain compensation |
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