Sparse unmixing method based on optical calculation
A sparse unmixing and optical computing technology, applied in the field of hyperspectral unmixing, can solve the problems of difficult real-time endmember unmixing and abundance matrix reconstruction, and achieve the effect of fast and effective sparse decomposition, fast response ability, and large storage capacity
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[0028] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0029] figure 1 is the flow chart of hyperspectral sparse unmixing based on optical calculation, figure 2 is an optical 4f system, image 3 is a joint transform correlator. Such as figure 1 Shown: a kind of hyperspectral sparse unmixing method based on optical calculation provided by the present invention, comprises the following steps:
[0030] The first step: using the optical filtering method to obtain the transform domain sparse coefficient matrix of the hyperspectral signal;
[0031] Obtaining the transformation domain sparse coefficient matrix of the hyperspectral signal by the optical filtering method includes an optical multi-scale transformation step, and the optical multi-scale transformation includes:
[0032] 1) Optical non-adaptive multi-scale transformation (represented by contourlet), which specifically includes the fol...
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