LAUSR

Abstract Imaging spectrometer has a promising application prospect in the field of ecological environment monitoring. Nowadays, the scanning mode of imaging spectrometer is mainly push-broom and snap-shoot. However, few studies focus on using rotational scanning mode to carry out spectral scanning for imaging spectrometer. In this paper, we devise a portable rotating scanning spectrometer, which can be installed on a small mechanical and electrical equipment for rotating scan. During the scanning process, the orientation of the spectral axis of the spectral image is not fixed. In our work, we used Hough algorithm to analyse the line angle in spectral images, and then corrected all spectral images by reverse rotation. From the corrected image, we can obtain spectral data of scanned target object. Furthermore, we design a reconstruction algorithm, which can reconstruct a 2-D spatial image based on the spectral images. Although the quality of the spatial image is affected by instability of the system, our experimental results also demonstrate that the system can be used to obtain spectral cubes i.e. 2-D spatial and 1-D spectral information. This system can be used for spectral sensing for any objects of interested without the help of precise electromechanical equipment. Therefore, this system has the potential of being improved into an ultra-compact imaging spectrometer and used in some complex application environments, such as endoscopic imaging.