Authors:
Eric Wisotzky
1
;
2
;
Jost Triller
1
;
Anna Hilsmann
1
and
Peter Eisert
1
;
2
Affiliations:
1
Computer Vision & Graphics, Fraunhofer HHI, Einsteinufer 37, 10587 Berlin, Germany
;
2
Department of Informatics, Humboldt University, Berlin, Germany
Keyword(s):
Multispectral, Hyperspectral, Stereo-Reconstruction, Optical Flow, Disparity, Spectral Data Fusion, Demosaicing, Multispectral Snapshot Cameras.
Abstract:
Spectral imaging enables the analysis of optical material properties that are invisible to the human eye. Different spectral capturing setups, e.g., based on filter-wheel, push-broom, line-scanning, or mosaic cameras, have been introduced in the last years to support a wide range of applications in agriculture, medicine, and industrial surveillance. However, these systems often suffer from different disadvantages, such as lack of real-time capability, limited spectral coverage or low spatial resolution. To address these drawbacks, we present a novel approach combining two calibrated multispectral real-time capable snapshot cameras, covering different spectral ranges, into a stereo-system. Therefore, a hyperspectral data-cube can be continuously captured. The combined use of different multispectral snapshot cameras enables both 3D reconstruction and spectral analysis. Both captured images are demosaicked avoiding spatial resolution loss. We fuse the spectral data from one camera into
the other to receive a spatially and spectrally high resolution video stream. Experiments demonstrate the feasibility of this approach and the system is investigated with regard to its applicability for surgical assistance monitoring.
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