SNAPSHOT TYPE HYPERSPECTRAL IMAGING METHOD FOR SOLVING CHROMATIC DISPERSION BLURRING

摘要

A snapshot type hyperspectral imaging method for solving chromatic dispersion blurring. The method comprises the following steps: S1, selecting a reference wavelength, calibrating the chromatic dispersion of the reference wavelength, and selecting a central wavelength; S2, estimating a relative chromatic dispersion of all reconstruction wavelengths and the central wavelength; S3, generating a chromatic dispersion matrix, and generating a spectral response matrix by using a spectral response curve of a sensor 3; S4, collecting an image with chromatic dispersion blurring; S5, solving chromatic dispersion blurring of the image collected in S4 by using the chromatic dispersion matrix and the spectral response matrix generated in S3 to obtain spectral data aligned with each channel image; and S6, projecting the aligned spectral data obtained in S5 to an imaging space, extracting a foreground image by means of a threshold method, sampling the chromatic dispersion image obtained in S4, taking the chromatic dispersion image as a strong a priori constraint of a pixel value of the foreground image, and reconstructing accurate spatial hyperspectral data, so that hyperspectral imaging is realized. In the imaging method, a simple and low-cost system is used, such that accurate hyperspectral imaging is realized.