High-resolution SAR image change detection method based on increment CAE

An image change detection and high-resolution technology, applied in the field of image processing, can solve the problems of low noise suppression effect of high-resolution SAR images, insufficient use of two-dimensional spatial information of SAR images, and poor detection effect of SAR images, etc. The effect of training time, enhanced robustness, and improved detection speed

Active Publication Date: 2018-02-02
XIDIAN UNIV
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Problems solved by technology

However, the disadvantage of this method is that because the stacked autoencoder network can only process one-dimensional data, it does not make full use of the two-dimensional spatial information of the SAR image. SAR image detection effect is not good
However, the shortcomings of this method are that when the salient area is large, the pixel-based clustering method is still time-consuming, the noise suppression effect on high-resolution SAR images is not obvious, and the detection accuracy is not high

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  • High-resolution SAR image change detection method based on increment CAE
  • High-resolution SAR image change detection method based on increment CAE
  • High-resolution SAR image change detection method based on increment CAE

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[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] refer to figure 1 , the concrete steps that the present invention realizes are as follows:

[0046] Step 1, input high-resolution synthetic aperture radar SAR image.

[0047] Input two registered high-resolution synthetic aperture radar SAR images I of different time phases in the same area 1 and I 2 .

[0048] Step 2, construct the initial sample set.

[0049] For two high-resolution SAR images I 1 and I 2 Sliding window cutting is performed to obtain 17956 image blocks of 15×15 pixels as the initial sample sets D1 and D2 respectively.

[0050] Step 3, obtain the normalized sample set.

[0051] Through the linear scaling method, the values ​​of the initial sample sets D1 and D2 are normalized to [0, 1] respectively, and the normalized sample sets V1 and V2 are obtained.

[0052] The specific steps of the linear scaling method are as follows:

[0053] ...

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Abstract

The invention discloses a high-resolution SAR image change detection method based on increment CAE, and mainly solves problems that the SAR image change detection of a conventional method is liable tobe affected by spots, and the conventional method is not high in detection precision and is small in detection speed. The method specifically comprises the following steps: (1), inputting a high-resolution SAR image; (2), constructing an initial sample set; (3), carrying out the normalization; (4), constructing an increment convolution self-coding CAE network; (5), constructing an error function;(6), training the increment convolution self-coding CAE network; (7), obtaining a characteristic difference pattern; (8), obtaining a change detection result image at a 15*15 pixel scale; (9), obtaining change detection result images at three scales; (10), carrying out the fusion of the change detection result images at different scales; (11), outputting a change detection result image of the high-resolution SAR image The method is good in noise influence robustness, high in detection precision and high in detection speed for the change detection of the SAR image.

Description

technical field [0001] The invention belongs to the technical field of image processing, and further relates to a high-resolution Synthetic Aperture Radar (SAR) image change detection method based on incremental convolution self-encoding CAE (Convolution Auto Encoder) in the technical field of remote sensing image change detection . The invention can realize the detection of different areas of two high-resolution SAR images obtained in different time phases, and can be widely used in the fields of ground object coverage and utilization, forest and vegetation coverage detection, natural disaster monitoring and evaluation, urban planning and the like. Background technique [0002] High-resolution synthetic aperture radar (SAR) image change detection refers to the process of qualitatively or quantitatively analyzing and determining the characteristics of land surface changes using multi-temporal remote sensing images of the same geographical area acquired at different times. B...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06T7/00G06T7/136G06K9/32G06K9/46G06N3/04
CPCG06T7/0002G06T7/136G06T2207/10044G06T2207/20221G06V20/13G06V10/507G06V10/25G06N3/045
Inventor焦李成屈嵘孟繁荣张丹杨淑媛侯彪马文萍刘芳尚荣华唐旭古晶陈璞花
OwnerXIDIAN UNIV