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SAR image segmentation method based on Bhattacharyya distance and texture mode measurement

A technique of Bhattacharyachian distance and image segmentation, which is applied in the field of image processing and can solve the problems of low segmentation accuracy

Active Publication Date: 2020-02-04
XIDIAN UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects in the above-mentioned prior art, and propose a SAR image segmentation method based on Bhattacharyachian distance and texture mode measurement, which is used to solve the technical problem of low segmentation accuracy existing in the prior art

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  • SAR image segmentation method based on Bhattacharyya distance and texture mode measurement
  • SAR image segmentation method based on Bhattacharyya distance and texture mode measurement

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[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] refer to figure 1 , a SAR image segmentation method based on Bhattacharyachian distance and texture mode measurement, comprising the following steps:

[0048] Step 1) Preprocessing the SAR image:

[0049] Read the SAR image to be segmented with a pixel value of M×N, and convert it to double format to obtain a double format SAR image, where M≥250, N≥250.

[0050] In this embodiment, M=501, N=501, a total of M×N=251001 pixels. Converting to double format can make the calculation accuracy of Bhattacharyian distance higher.

[0051] Step 2) Calculate the Bhattacharyachian distance of each pixel in the double format SAR image:

[0052] Step 2a) Quantize the histogram of the SAR image in double format to obtain a quantized SAR image containing Q gray levels, wherein Q≥10; the specific implementation steps are:

[0053] (2a1) Cal...

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Abstract

The invention provides an SAR (Synthetic Aperture Radar) image segmentation method based on Bhattacharyya distance and texture mode measurement, which is used for solving the technical problem of lower segmentation precision in the prior art and comprises the following steps of: preprocessing an SAR image; calculating the Bhattacharyya distance of each pixel point in the double-format SAR image; carrying out initial segmentation on the SAR image in the double format; obtaining a middle segmentation image Y of the SAR image in the double format; calculating statistical similarity measurement SSM (Yr, Ys) of adjacent regions in the intermediate segmentation image Y; calculating a texture mode metric TPS (Yr, Ys) of an adjacent region in the intermediate segmentation image Y; calculating a cost function v (Yr, Ys) of the adjacent regions Yr and Ys in Y; and obtaining a final segmentation image of the double-format SAR image. The method can be used in the fields of disaster monitoring, earth change research, map drawing, crop growth evaluation, glacier distribution observation and the like.

Description

technical field [0001] The invention belongs to the technical field of image processing, and relates to a SAR image segmentation method, in particular to a SAR image segmentation method based on Bhattacharyachian distance and texture mode measurement, which can be used for disaster monitoring, earth change research, map drawing, crop growth evaluation, Glacier distribution observation and other fields. Background technique [0002] Synthetic Aperture Radar (SAR) is a coherent imaging radar, which has the characteristics of high resolution, all-weather work and penetration of cover, and has become an important means of remote sensing observation. SAR images contain rich target categories. With the continuous expansion of SAR application fields, the requirements for automatic interpretation of SAR images are getting higher and higher, and SAR image segmentation has always been the core problem and difficulty of automatic interpretation. SAR image segmentation technology divid...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/10G06T7/11G06K9/62
CPCG06T7/10G06T7/11G06T2207/10044G06F18/22
Inventor 水鹏朗孙煜贺樊书辰
Owner XIDIAN UNIV
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