Hyperspectral unmixing compressive sensing method based on three-dimensional total variation sparse prior
A sparse prior, compressed sensing technology, applied in image data processing, instrumentation, computing and other directions, can solve problems such as low accuracy
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[0053] The specific steps of the hyperspectral unmixing compressed sensing method based on the three-dimensional total variation sparse prior of the present invention are as follows:
[0054] In a hyperspectral image, the reflectance values of different bands of the same pixel constitute a discrete vector, called the spectrum of the pixel. Often, pure substances have unique spectra in hyperspectral images, called endmembers. Due to factors such as the mixture of ground objects and the low spatial resolution of hyperspectral images, the spectrum of a pixel is often a mixture of different pure ground object spectra. This spectral mixing phenomenon can usually be described using a linear mixed model. The model considers any one mixed spectrum to be a linear combination of all endmembers in the imaged scene. The proportion of endmembers in the mixed spectrum is called the abundance value. Therefore, for hyperspectral images (n p Indicates the number of pixels contained in ...
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