초록 ▼

A miniature, computerized component, variable interference imaging spectrometer (C.sub.2 VIFIS) system for airborne remote sensing data acquisition with a two dimensional field of view. An alternating staring/scanning method is used to optimize a pushbroom hyperspectral image data set with a photogr

A miniature, computerized component, variable interference imaging spectrometer (C.sub.2 VIFIS) system for airborne remote sensing data acquisition with a two dimensional field of view. An alternating staring/scanning method is used to optimize a pushbroom hyperspectral image data set with a photogrammetric reference. Synchronized CCD-imager sensor modules or cameras are aligned to a common field of view. One imager module has a visible range variable interference filter on its surface, a second imager module has a near-infrared range variable interference filter on its surface, and a third imager module has a bandbase filter attached to the imager. Video data from the three sensor modules is digitized and recorded in real time. Further, such video data is monitored by a computer and used to control the shutter exposure of each of the three sensor imager modules. Wavelength spectral image data and directional spectral image data are acquired by a single pass over a target area. Post-processing of such data produces reconstructed track-recovery-images extracted from a sequence of video frames for the spectral regions of interest at a fixed column position to produce multiple bands of monochrome images.

대표청구항 ▼

[What is claimed is:] [1.]a first imager means having a variable interference filter for acquiring spectral images over a first predetermined range;a second imager means having a variable interference filter for acquiring spectral images over a second predetermined range;a third imager means for acq

[What is claimed is:] [1.]a first imager means having a variable interference filter for acquiring spectral images over a first predetermined range;a second imager means having a variable interference filter for acquiring spectral images over a second predetermined range;a third imager means for acquiring photogrammetric reference and directional spectral images;means for synchronizing said first imager means, said second imager means and said third imager means to acquire said images simultaneously;means coupled to outputs of said first imager means, said second imager means and said third imager means for converting said outputs from analog to digital signals; andmeans coupled to said outputs of said analog to digital converting means for processing said digital signals of said images, said processing means comprises means for performing an alternating staring and scanning operation.