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Three layer color visualization method of hyperspectral remote sensing image

A hyperspectral remote sensing and hyperspectral image technology, applied in the field of three-layer color visualization of hyperspectral remote sensing images, can solve the problems of loss of spatial information, inability to highlight objects of interest, confusion of pie layers, etc. Feature independence and visual intuitiveness, avoiding cluttered effects

Inactive Publication Date: 2012-04-11
HARBIN ENG UNIV
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Problems solved by technology

However, these five layers of images are all displayed using the linear interpretation results of the spectrum, not only the spatial information is lost, but the visual effect improvement is also very limited, the pie layer is chaotic, and some interesting objects cannot be highlighted and many more

Method used

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  • Three layer color visualization method of hyperspectral remote sensing image
  • Three layer color visualization method of hyperspectral remote sensing image
  • Three layer color visualization method of hyperspectral remote sensing image

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Experimental program
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Embodiment approach

[0037] 1) The color visualization method for spatial information

[0038] The bilateral filtering described in step 2 fuses the fused image I of each stage F Calculated as follows:

[0039]

[0040] In the above formula, I(x, y, λ 1 ) to I(x,y,λ M ) is represented as a subset of a hyperspectral image cube with M bands. I BF Bilaterally filter an image: in

[0041] The hierarchical fusion method is as follows: for hyperspectral data with dimension (XλYλN), the number of bands is N. At the first level, the data is equally divided into continuous subsets, whose subset dimension is (XλYλM), use bilateral filtering to fuse each subset, and finally generate P different images. These P images are used as the input images of the next level, and the (XλYλP)-dimensional data is fused using the same method as the previous level to generate a fusion image of the next level. By analogy, a unique result image is finally generated.

[0042] If the average brightness or...

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Abstract

The invention provides a three layer color visualization method of a hyperspectral remote sensing image. The method is characterized by: firstly, using a full-wave band image to blend and realize a three-channel space information color visualization image with a high spatial resolution; simultaneously based on a spatial correlated pie chart matrix layer, using a spectrum unmixing result and a display splinter texture layer to display local and concrete spectrum information; finally, using a combination form of three layers: a space information layer, the display splinter texture layer and thepie chart matrix layer to express the hyperspectral image. The image generated by using the method possesses good characteristic independence and visual intuition. Confusion of color expression can be avoided. By using the method, a plurality of types can be simultaneously or individually displayed and a target object can be highlighted so as to satisfy different observation needs.

Description

technical field [0001] The invention relates to a hyperspectral image visualization method, in particular to a three-layer color image display method that fully utilizes hyperspectral data information sources. Background technique [0002] Hyperspectral data not only contains rich spatial information but also rich spectral information. In the traditional hyperspectral image visualization method, for the original hyperspectral data, the image cube is used to express the whole hyperspectral data, the spectral curve is used to express its two-dimensional spectral information, the spectral surface is used to express its three-dimensional spectral information, and the grayscale An image is used to represent a certain band or a certain type of feature information. However, the increase in the number of bands will inevitably lead to the redundancy of information and the increase in the complexity of data processing, which is not conducive to visual expression. [0003] The three-...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 王立国刘丹凤王群明
Owner HARBIN ENG UNIV
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