2 results about "Spectral bands" patented technology

The invention provides a vegetation coverage inversion method based on combination of multi-source remote sensing data and geographical partition data. The method comprises the following steps: obtaining multi-spectral band surface reflectance data based on medium-resolution satellite remote sensing data; obtaining vegetation and non-vegetation classification data based on the high-resolution remote sensing data; calculating the classification data to obtain a vegetation coverage sample; constructing a random forest inversion model based on ecological partition by using the vegetation coverage sample and the surface reflectance data; and based on the inversion model, carrying out vegetation coverage inversion on the surface reflectance data in the ecological partition to obtain the vegetation coverage of the split scene. The invention also correspondingly provides a system. According to the method, the vegetation coverage inversion precision and the data production efficiency can be improved by establishing a model for each ecological partition.

The invention provides a portable snapshot array polarization multispectral imager and an imaging method in order to solve the problems that an existing snapshot array polarization multispectral imager is large in size and complex in restoration algorithm. The portable snapshot array polarization multispectral imager comprises a lens array, a multiband and polarization filter, a relay imaging coupling lens and a focal plane detector which are sequentially arranged along the same light path, the lens array is composed of m * n lenses, m > = 3, and n > = 3. Images formed by different lenses arenot overlapped. The multiband and polarization filter is an optical filter/film array composed of P spectral filters/films with different spectral bands and Q polarization filters/films with differentangles, P + Q = m * n, and Q = 3 or 4; wherein the Q polarization filters are in one-to-one correspondence with any Q lenses in the lens array, and the P spectrum filters are in one-to-one correspondence with the rest m * n-Q lenses in the lens array; and the relay imaging coupling lens is used for coupling an image formed by the lens array to the focal plane detector.