Hyperspectral image compression method based on interested pixel protection

A technology of hyperspectral image and compression method, which is applied in the field of hyperspectral image compression, can solve the problems of not being widely recognized, compressing image and affecting the application effect, etc.

Inactive Publication Date: 2014-06-04
QIQIHAR UNIVERSITY
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Problems solved by technology

Although lossy compression can achieve compression, it has not been widely recognized because the compressed image may affect the effect of later application

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  • Hyperspectral image compression method based on interested pixel protection
  • Hyperspectral image compression method based on interested pixel protection
  • Hyperspectral image compression method based on interested pixel protection

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Embodiment Construction

[0039] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] The hyperspectral image compression method based on pixel-of-interest protection proposed by the present invention includes two steps. The first step is to extract the pixel of interest, and the second step is to realize the compression method based on the preservation of the pixel of interest. The flow chart of the method is as figure 1 shown. 1 Interest pixel extraction

[0041] The unmixing method mainly used in the pixel of interest extraction is to realize the mixed pixel as the pixel of interest. This is because the mixed pixel is generally at the edge, which is more conducive to the recovery of high-frequency information. Here we use a linear spectral mixture model (LSMM) for sub-pixel analysis. After unmixing, a series of abundance maps can be obtained, and then we can adopt a threshold T t...

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Abstract

The invention discloses a hyperspectral image compression method based on interested pixel protection. The method comprises two steps, wherein the first step refers to interested pixel extraction, and the second step refers to compression method implementation based on interested pixel reservation. By the adoption of a deblurring method, main edges of a hyperspectral image are protected. The hyperspectral image compression method based on the interested pixel protection is superior to a common compression method, and effectiveness of the hyperspectral image compression method is fully proved through experimental results. In other regions, edge information acquired through the hyperspectral image compression method is more detailed than information obtained through the common compression method, and the advantages of the hyperspectral image compression method are displayed more remarkably as the compression ratio increases in spite of differences in degree.

Description

technical field [0001] The invention belongs to the technical field of image processing, and relates to a hyperspectral image compression method based on pixel-of-interest protection. Background technique [0002] The advantage of hyperspectral images is reflected in the richness of information. Although lossy compression can achieve compression, it has not been widely recognized because the compressed image may affect the effect of later application. Therefore, how to effectively compress images while retaining as much key information as possible has become a very challenging problem. [0003] Most hyperspectral image lossy compression methods usually retain low-frequency information, but for applications such as edge detection, high-frequency information is more useful. In this case, evaluating whether the compression method is effective does not depend on the recovery of the main energy. , but depends on the degree of high-frequency information recovery. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/167H04N19/154H04N19/63
Inventor 靳展
Owner QIQIHAR UNIVERSITY
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