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Remote sensing image registration method, device and system

An image and registration technology, applied in image analysis, image enhancement, image data processing, etc., can solve the problem of uneven distribution of image registration accuracy, grayscale matching without rotation invariance, grayscale matching without anti-interference, etc. It can reduce the search range and calculation amount, avoid heavy texture and weak texture areas, and avoid uneven distribution of feature points.

Active Publication Date: 2020-12-04
苍穹数码技术股份有限公司
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Problems solved by technology

However, this algorithm has the following limitations: 1. Gray-scale matching does not have the characteristic of rotation invariance; 2. It requires a huge amount of calculation during the optimal value search process; 3. For heavy-textured and weak-textured areas, gray-scale matching No ability to resist interference
However, feature matching is prone to uneven distribution of points with the same name on the image, which makes the accuracy distribution of image registration uneven

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  • Remote sensing image registration method, device and system
  • Remote sensing image registration method, device and system
  • Remote sensing image registration method, device and system

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Embodiment Construction

[0049] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0050] Image registration refers to the process of geometric calibration of two images with overlapping areas acquired at different times, different sensors or under different conditions. figure 1 The implementation flow of the image registration technical solution according to the embodiment of the present invention is shown. The implementation process of the image registration technical solution of the present invention includes: determining the coordinate transformation relationship between the image to be registered and the reference image; extracting seed points on the image to be registered; determining the corresponding same-name point of the seed point on the reference image; The seed point and the corresponding point of the same name are registered with high precision. In the process of determining the coordinate transformation rela...

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Abstract

The invention relates to a remote sensing image registering method, apparatus and system. The implementing flow of the image registering technical scheme of the remote sensing image registering method includes the steps: receiving an image to be registered and a reference image; performing global rough matching on the image to be registered and the reference image to determine the affine transformation relation between the image to be registered and the reference image; selecting seed points from the image to be registered through characteristic extraction; performing rough matching to precise matching on the reference image step by step to determine the homonymous points of the seed points; and based on the seed points and the corresponding homonymous points, realizing registering between the image to be registered and the reference image.

Description

technical field [0001] The invention relates to the technical field of remote sensing image processing, in particular to a method, device and system for multi-source remote sensing image registration. Background technique [0002] Image registration refers to the process of geometric calibration of two images with overlapping areas acquired at different times, different sensors or under different conditions. Image registration technology is the basis of remote sensing image processing, image stitching, change monitoring, multi-sensor image fusion and other fields. Image registration methods can be roughly divided into two categories: image registration methods based on grayscale information and image registration methods based on feature information. [0003] The grayscale-based image registration method is easy to implement. It only needs to obtain its grayscale information, establish the similarity measurement function between the image to be registered and the reference ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/33
CPCG06T2207/10032G06T2207/20016G06T7/33
Inventor 官小平矫京均黄鸿志崔洪曜王宁王希营孙中兴
Owner 苍穹数码技术股份有限公司
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