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A Hyperspectral Image Compression Method Based on Protection of Pixels of Interest

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

Inactive Publication Date: 2018-02-16
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

Method used

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  • A Hyperspectral Image Compression Method Based on Protection of Pixels of Interest
  • A Hyperspectral Image Compression Method Based on Protection of Pixels of Interest
  • A Hyperspectral Image Compression Method Based on Protection of Pixels of Interest

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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 interest pixel protection, which includes two steps. The first step is the extraction of pixels of interest, and the second step is implemented based on a compression method for pixel retention of interest. The unmixing method adopted, for the protection of the main edge of the hyperspectral image, the compression method of the present invention is superior to the common compression method, and the experimental results fully prove the effectiveness of the proposed method. In other areas, the edge information obtained by the method of the present invention is also more detailed than that obtained by the common compression method. Although the degree is different, as the compression ratio increases, the advantages of the method of the present invention are more obvious.

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 Patents(China)
IPC IPC(8): H04N19/167H04N19/154H04N19/63
Inventor 石翠萍靳展刘文礼
Owner QIQIHAR UNIVERSITY
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