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A full-spectrum signal unmixing method

A full-spectrum and unmixing technology, applied in the field of full-spectrum probes, can solve problems such as linear spectrum unmixing errors and spectral endmember variability, and achieve the effect of overcoming nonlinearity

Active Publication Date: 2021-04-30
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the influence of various factors, the spectral endmembers often have variability, which is one of the main factors causing linear spectral unmixing errors.

Method used

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  • A full-spectrum signal unmixing method
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  • A full-spectrum signal unmixing method

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Embodiment Construction

[0055] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below in conjunction with specific embodiments.

[0056] The full-spectrum signal unmixing method described in the present invention comprises the following steps:

[0057] S1, use the end-tuple constraint matrix to describe the end-tuple mixing, and use the end-tuple mixing model to establish the unmixing objective function;

[0058] S2, using a bilinear sparse induction method to simplify the unmixing objective function;

[0059] S3. Solve the unmixing objective function by using an inertial adjacent point alternating linear minimization method.

[0060] Specifically, in step S1, the end-tuple constraint matrix is in Represents a matrix, K represents the number of end members;

[0061] The end-tuple mixture model is expressed as:

[0062] the y i =MB i a i +n i (1)

[0063] In the formula, the...

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Abstract

The present invention provides a full-spectrum signal unmixing method, which uses an endgram constraint matrix to describe endgram mixing, uses an endgram mixing model to establish an unmixing objective function, and uses a bilinear sparse induction method to simplify the unmixing objective function; using the inertial adjacent point alternating linear minimization method to solve the unmixing objective function, thereby calculating the unmixing process of the full-spectrum signal, and overcoming the nonlinearity caused by the spectral end member variation.

Description

technical field [0001] The invention belongs to the technical field of full-spectrum probes, and in particular relates to a full-spectrum signal unmixing method. Background technique [0002] In the case of full-spectrum sensing, each pixel is called a mixed pixel, which can be decomposed into different end members. Different technical indicators often depend on different end-member groups, and these end-member groups are obtained according to the mixed pixels, which is the so-called "spectral unmixing" process. Linear spectral unmixing plays an important role in spectral unmixing, which uses a linear mixture model to decompose these endmembers. However, due to the influence of various factors, the spectral endmembers often have variability, which is one of the main factors causing linear spectral unmixing errors. [0003] Spectral unmixing is the core technology to realize the multi-functionalization of full-spectrum probes, and it is also the technical basis for early wa...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G06F17/10
CPCG01N21/25G06F17/10
Inventor 郭春生林翰闻蔡蒙杨萌
Owner HANGZHOU DIANZI UNIV