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Bilateral Filtering Algorithm Based on Homogeneous Region Segmentation

A homogeneous area and bilateral filtering technology, which is applied in the field of hyperspectral image processing, can solve the problems of too many non-similar structure pixel features, etc., and achieve the effect of reducing the negative impact of the output value, good contrast, and obvious boundaries

Active Publication Date: 2022-05-20
BEIBU GULF UNIV
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Problems solved by technology

[0014] The invention provides a bilateral filtering algorithm based on homogeneous region segmentation, which is used to solve the problem that the central pixel in the filter template of the existing bilateral filtering algorithm contains too many non-similar structure pixel features

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  • Bilateral Filtering Algorithm Based on Homogeneous Region Segmentation
  • Bilateral Filtering Algorithm Based on Homogeneous Region Segmentation
  • Bilateral Filtering Algorithm Based on Homogeneous Region Segmentation

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Embodiment Construction

[0039] The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The protection scope of the present invention.

[0040] Such as figure 1 As shown, the bilateral filtering algorithm based on homogeneous region segmentation includes the following steps:

[0041] (1) input image;

[0042] (2) Segment the input image according to the spectral similarity to obtain A homogeneous regions, where A is a positive integer. During the division process, the input image may have two or more disjoint regions with the sam...

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Abstract

The bilateral filtering algorithm based on homogeneous region segmentation provided by the present invention first utilizes the spatial continuity of the physical characteristics of each pixel in the hyperspectral image to segment the hyperspectral image into several homogeneous regions with similar spectra, and then Each pixel in a homogeneous area is sequentially subjected to bilateral filtering, and finally an output image is obtained. Therefore, the number of non-structurally similar pixels in the bilateral filtering template corresponding to the pixel is greatly reduced, and the structural similarity of each pixel in the bilateral filtering template is relatively high, thereby greatly reducing the weight distribution of non-structurally similar pixels and reducing the non-structural similarity. The problem that pixels have a large negative impact on the output value of bilateral filtering, the boundary in the output image is more obvious, and the contrast is good.

Description

technical field [0001] The invention relates to the field of hyperspectral image processing, in particular to a bilateral filtering algorithm based on homogeneous region segmentation. Background technique [0002] With the development of science and technology, hyperspectral remote sensing technology has been greatly developed. Hyperspectral data can be represented as a hyperspectral data cube, which is a three-dimensional data structure. Hyperspectral data can be regarded as a three-dimensional image, and one-dimensional spectral information is added to the ordinary two-dimensional image. Its spatial image describes the two-dimensional spatial characteristics of the earth's surface, and its spectral dimension reveals the spectral curve characteristics of each pixel in the image, thus realizing the organic fusion of remote sensing data spatial dimension and spectral dimension information. Hyperspectral remote sensing images contain rich spectral information, can provide sp...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/11
CPCG06T7/11G06T2207/10036G06T2207/20028
Inventor 陈志坤蔡之华付少媛
Owner BEIBU GULF UNIV
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