Pure substance quantity determination method in imaging spectrum mixed pixels

A technology of mixing pixels and imaging spectra, applied in image data processing, image enhancement, image analysis, etc., can solve problems such as high computational complexity, decreased detection accuracy, and low operating efficiency

Active Publication Date: 2016-07-13
BEIHANG UNIV
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the main purpose of the present invention is to provide a method for automatically determining the number of pure substances for imaging spectrum analysis. This method can solve the problem of artificially setting threshold parameters, high computational complexity, and Technical problems such as low operating efficiency, increased number of spectral bands, and decreased detection accuracy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pure substance quantity determination method in imaging spectrum mixed pixels
  • Pure substance quantity determination method in imaging spectrum mixed pixels
  • Pure substance quantity determination method in imaging spectrum mixed pixels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0074] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail by citing the following embodiments and referring to the accompanying drawings.

[0075] In order to verify the actual use effect of the present invention, the experiment is conducted on the increasingly serious problem of adulteration of feed materials. Unscrupulous merchants often add some illegal high-protein organic substances such as melamine to feed raw materials such as soybean meal in order to fake the illusion of high protein content in feed materials. Because the appearance of soybean meal is light yellow or yellowish brown, melamine is in the form of white crystals, and the color of soybean meal is It will cover up the existence of melamine, and the content of adulterated melamine is very low, so it is more difficult to identify the adulteration of soybean meal through the appearance characteristics. The in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a pure substance quantity determination method in imaging spectrum mixed pixels, comprising: employing an imaging spectrometer to obtain mixed pixel spectrum data; performing smoothing preprocessing on primary spectra with a lower signal to noise ratio; performing similarity discrimination on obtained pixel spectra, and performing mean centralized processing on primary spectra of higher similarity; simplifying eigenvalue decomposition to project a spectrum matrix onto orthogonal subspaces; descending normalizing obtained subspace eigenvalues to be a weight sequence; and establishing a weight sequence two-dimensional coordinate system, and determining the quantity of mixed pixel pure substances through a geometrical distance automatic distinction mode. The method can efficiently and accurately detect the quantity of mixed pixel pure substances without any prior information, is not only suitable for close range imaging spectra (such as microscopic imaging spectrum) and remote sensing high spectra, but also suitable for grade determination of a non imaging spectrum (such as infrared spectroscopic analysis) black system group.

Description

technical field [0001] The invention relates to the technical field of imaging spectrum analysis, in particular to a method for determining the quantity of pure substances in a mixed pixel of imaging spectrum. Background technique [0002] Imaging spectroscopy technology is the fastest-growing and most eye-catching spectral analysis technology since the 1990s. Using imaging spectrometers to analyze the properties or contents of chemical components of mixed substances has the advantages of fast speed, no damage to samples, simple operation, and good stability. , high efficiency and other characteristics, can be widely used in remote sensing, agriculture and food testing and other fields. Imaging spectral data cubes often contain spectra of tens of thousands of pixel points. Due to the limited spatial resolution of imaging spectrometers or because the analyte is a mixed compound, each pixel usually contains more than one pure substance, so Mixed pixels are formed, and the spe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T5/00
CPCG06T5/002G06T7/0004
Inventor 李庆波吴科江
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap