A Fusion Method of Interferometric SAR Complex Image and Optical Image

An optical image and fusion method technology, which is applied in the field of fusion of interferometric SAR complex images and optical images, can solve the problems that cannot be directly applied to interferometric SAR complex images and optical images, and has not yet fused DEM, and achieves remarkable effects and simple operation. Effect

Active Publication Date: 2020-07-03
NAT SPACE SCI CENT CAS
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Problems solved by technology

[0003] So far, although scholars have proposed various methods for fusing SAR images and optical images, none of these methods can be directly applied to the fusion of interferometric SAR complex images and optical images. The DEM information of the target is provided, but there is no effective method to fuse DEM, SAR image and optical image

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  • A Fusion Method of Interferometric SAR Complex Image and Optical Image
  • A Fusion Method of Interferometric SAR Complex Image and Optical Image
  • A Fusion Method of Interferometric SAR Complex Image and Optical Image

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[0043] The present invention will be further described now in conjunction with accompanying drawing.

[0044] refer to figure 1 with figure 2 , the fusion method of a kind of interferometric SAR complex image and optical image that the present invention proposes, comprises the following steps:

[0045] Step 1), read in the interferometric SAR complex image pair to be fused and Optical Image I OPT ;

[0046] Step 2), to the optical image 1 that step 1) reads in OPT Calculate its chrominance component H;

[0047] Step 3), for the interferometric SAR complex image pair read in step 1) Perform coherent processing to obtain digital elevation model I DEM , to I DEM Perform normalization adjustment to obtain the saturation component S;

[0048] Step 4), to the SAR image 1 that step 1) reads in SARm Perform incoherent processing and logarithmic normalization to obtain the intensity component I;

[0049] Step 5), the chromaticity H that step 2) obtains, the saturation S t...

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Abstract

The invention discloses a fusion method of an interferometric SAR complex image and an optical image. The method comprises the following steps: step 1) reading the to-be-fused interferometric SAR complex image pair (formula) and an optical image IOPT; step 2) calculating a chromaticity component H of the read optical image IOPT; step 3) performing coherent processing on the read interferometric SAR complex image pair (formula) to obtain a digital elevation model IDEM, and performing normalization adjustment on the IDEM to obtain a saturability component S; step 4) performing non-coherent processing and logarithm normalization on the read SAR image ISARm to obtain an intensity component I; step 5) combining the chromaticity component H obtained in the step 2), the saturability component S obtained in the step 3) and the intensity component I obtained in the step 4), constructing an HIS model of the fused image IFUSE, and converting the HIS model into an RGB model to output. The method in the invention has the advantages that the effect is remarkable, the operation is simple, manual intervention and intervention are not needed.

Description

technical field [0001] The invention relates to a multi-source image fusion method, in particular to a fusion method of an interference SAR complex image and an optical image. Background technique [0002] Interferometric SAR aims to invert the geometric information of the scene by measuring the scattered echoes of the target under two different imaging geometries to calculate the interferometric phase (literature [1]: R.F.Hanssen.Radar interferometry: Data interpretation and error analysis.Dordrecht, The Netherlands : Kluwer Academic Publishers, 2012). Different from traditional SAR, interferometric SAR usually acquires a pair of complex SAR images of the target. It not only has the unique texture information of traditional SAR images, but also provides a digital elevation model (Digital Elevation Model, DEM) that reflects the three-dimensional fluctuations of the target through interference processing. These texture and DEM information just complement the color informati...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/90G06T5/50
CPCG01S13/9023G06T5/50G06T2207/10044G06T2207/20221
Inventor 李东张云华石晓进董晓翟文帅
Owner NAT SPACE SCI CENT CAS
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