Sensors 2012, 12(8), 10228-10247; doi:10.3390/s120810228
Article

Mosaicing of Hyperspectral Images: The Application of a Spectrograph Imaging Device

Received: 15 June 2012; in revised form: 19 July 2012 / Accepted: 23 July 2012 / Published: 30 July 2012
(This article belongs to the Section Remote Sensors)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Hyperspectral monitoring of large areas (more than 10 km2) can be achieved via the use of a system employing spectrometers and CMOS cameras. A robust and efficient algorithm for automatically combining multiple, overlapping images of a scene to form a single composition (i.e., for the estimation of the point-to-point mapping between views), which uses only the information contained within the images themselves is described here. The algorithm, together with the 2D fast Fourier transform, provides an estimate of the displacement between pairs of images by accounting for rotations and changes of scale. The resulting mosaic was successively georeferenced within the WGS-84 geographic coordinate system. This paper also addresses how this information can be transferred to a push broom type spectral imaging device to build the hyperspectral cube of the area prior to land classification. The performances of the algorithm were evaluated using sample images and image sequences acquired during a proximal sensing field campaign conducted in San Teodoro (Olbia-Tempio—Sardinia). The hyperspectral cube closely corresponds to the mosaic. Mapping allows for the identification of objects within the image and agrees well with ground-truth measurements.
Keywords: hyperspectral imagery; mosaicing; environmental monitoring; spectrometers; classification
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MDPI and ACS Style

Moroni, M.; Dacquino, C.; Cenedese, A. Mosaicing of Hyperspectral Images: The Application of a Spectrograph Imaging Device. Sensors 2012, 12, 10228-10247.

AMA Style

Moroni M, Dacquino C, Cenedese A. Mosaicing of Hyperspectral Images: The Application of a Spectrograph Imaging Device. Sensors. 2012; 12(8):10228-10247.

Chicago/Turabian Style

Moroni, Monica; Dacquino, Carlo; Cenedese, Antonio. 2012. "Mosaicing of Hyperspectral Images: The Application of a Spectrograph Imaging Device." Sensors 12, no. 8: 10228-10247.

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