SAR and optical image fusion method and system for landslide detection
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A technology of optical image and fusion method, which is applied in the direction of instruments, scene recognition, calculation, etc., and can solve problems such as large amount of calculation
Pending Publication Date: 2021-02-02
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +3
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[0006] Third, the fusion technology of optical images and SAR images requires a relatively large amount of calculation, and improving the speed of the fusion algorithm is also a major problem in the current research status
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Embodiment 1
[0081] like figure 1 As shown, the SAR and optical image fusion method for landslide detection according to the embodiment of the present invention includes the following steps:
[0082] Step 1. Preprocess SAR image and optical image;
[0083] Step 2. Perform HIS transformation on the optical image to obtain three components I, H and S;
[0084] Step 3, performing stationary wavelet transform on the I component of the SAR image and the optical image and taking large fusion of high frequency component energy;
[0085] Step 4. Perform the characteristic detection of landslides on the low-frequency and high-frequency components of the SAR image and the grayscale information of the image itself, establish a SAR landslide target detection area function, and partition the SAR image;
[0086] Step 5. Establish the landslide feature area fusion rule, and realize image fusion according to the sub-area fusion strategy;
[0087] Step 6: Extract landslide disaster information based on ...
Embodiment 2
[0214] This embodiment provides a landslide detection-oriented SAR and optical image fusion system, which includes:
[0215] Image preprocessing unit, which preprocesses SAR images and optical images;
[0216] The HIS transformation unit performs HIS transformation on the optical image to obtain three components I, H and S;
[0217] The large energy fusion unit performs stationary wavelet transform on the I component of the SAR image and the optical image and the high frequency component energy fusion;
[0218] SAR landslide target detection area function establishment unit, which respectively performs characteristic detection of landslides on the low-frequency and high-frequency components of the SAR image and the grayscale information of the image itself, establishes the SAR landslide target detection area function, and partitions the SAR image;
[0219] The image fusion unit establishes the landslide feature area fusion rules, and realizes the image fusion according to the...
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Abstract
The invention discloses an SAR and optical image fusion method for landslide detection. The method provided by the invention comprises the following steps: step 1, preprocessing an SAR and an opticalimage; step 2, performing HIS conversion on the optical image to obtain three components I, H and S; step 3, performing stationary wavelet transform and high-frequency component energy maximization fusion on I components of the SAR image and the optical image; step 4, performing saliency detection on the low-frequency and high-frequency components of the SAR image and the gray scale information ofthe image, establishing an SAR salient target detection area guidance function, and partitioning the SAR image; step 5, establishing a salient region fusion rule, and realizing image fusion accordingto a regional fusion strategy; and step 6, identifying and extracting landslide disaster information based on the fused image. The method has good adaptability to SAR and optical image fusion for landslide detection, adopts related processing measures in structure maintenance, noise removal and spectrum reservation, and obtains an excellent effect.
Description
technical field [0001] The invention relates to the field of landslide disaster identification and monitoring and the field of multi-sensor remote sensing image data fusion, in particular to a landslide detection-oriented SAR and optical image fusion method and system. Background technique [0002] With the further development of remote sensing science and technology, the application of remote sensing technology for analysis and research in landslide disasters has continued to deepen. The massive acquisition of remote sensing data of various resolutions and various sensors provides sufficient data guarantee for landslide disaster identification. The application of remote sensing technology to identify landslide disasters can not only prevent and reduce disasters, but also provide sufficient disaster information and data protection for disaster relief and post-disaster reconstruction, so as to minimize the loss of life and property caused by disasters. [0003] At present, mo...
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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62G06K9/40
CPCG06V20/13G06V10/30G06F18/251G06F18/253
Inventor 司为国孟庆祥袁兆祥向枫段学琳汪自翔侯伟宏刘剑方炯徐晓华
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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