SAR image and low-resolution optical image multi-image fusion method

Abstract

The invention belongs to the technical field of image processing, and discloses an SAR image and low-resolution optical image multi-image fusion method. The method comprises the following steps: receiving and analyzing optical original image data, caching the optical original image data to wait for the arrival of an SAR image, analyzing the SAR image after the SAR image arrives, and then cutting the large-scene SAR image; and then matching the segmented sub-images with the optical image one by one, registering and fusing after successful matching, finally splicing the fused sub-images, and outputting a fused image in a large scene. According to the method, the problem of fusion of a large-scene SAR image and multiple optical images can be solved, and the low-resolution optical images can be fused with the SAR image on the premise of keeping the high resolution of the SAR image, so that the fusion result has more detail features and target direct-view interpretation capability.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a multi-image fusion method of a SAR image and a low-resolution optical image. Background technique [0002] Synthetic Aperture Radar (SAR) is an active microwave imaging with high resolution, which is sensitive to ground buildings and man-made bridges, has more details and texture features, and has certain penetration. It can capture more target information that is difficult to find in optical images all day and all day, and has a good reconnaissance function, and is widely used in various fields such as military affairs and agriculture. However, the backscattering characteristics of SAR images are easily affected by the geometric and dielectric properties of ground objects, and the image often has the phenomenon of "different objects with the same spectrum", which is not conducive to visual observation and target interpretation. Optical images reflect the physical and...

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Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a multi-image fusion method of SAR images and low-resolution optical images, which can solve the fusion problem of large-scene SAR images and multiple optical images, and can On the premise of retaining the high resolution of the SAR image, the low-resolution optical image is fused with it, so that the fusion result has more detailed features and the ability to interpret the target directly

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