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High-resolution panchromatic remote-sensing image change detection method considering snow covering effect

A remote sensing image and change detection technology, applied in the field of image processing, can solve the problems of different application scope, complicated change detection process, and increased change detection difficulty.

Inactive Publication Date: 2015-06-03
WUHAN UNIV
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Problems solved by technology

Each of the above algorithms has its own advantages and disadvantages, and no algorithm can be applied to all change detection cases.
The images obtained by different sensors have their own characteristics and different scopes of application. The complexity of the ground objects and the influence of environmental factors make the process of change detection more complicated.
Use remote sensing images for change detection in Northeast China. The snow cover makes change detection more difficult, and a single algorithm cannot accurately extract the change area

Method used

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  • High-resolution panchromatic remote-sensing image change detection method considering snow covering effect
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  • High-resolution panchromatic remote-sensing image change detection method considering snow covering effect

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Embodiment Construction

[0067] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0068] In this embodiment, three texture features of entropy, homogeneity and second moment are mainly used for change detection, and change regions are extracted by fusing the change detection results of each texture through the simple majority principle of group decision-making. The snow cover area on two remote sensing images of the same place in different periods is extracted by level set-based Chan-Vese segmentation method, and the change detection is carried out after removing the influence of snow. See the process figure 1 .

[0069] In this embodime...

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Abstract

The invention discloses a high-resolution panchromatic remote-sensing image change detection method considering snow covering effect. According to high-resolution panchromatic remote-sensing image change detection method, the characteristics of the snow covering on a panchromatic image is adequately used, the change detection is performed by adopting a change detecting method on the basis of a textural feature, and a change area is extracted. Snow areas on the tested old and new images are extracted by using Chan-Vese partition method on the basis of a level set method, according to a change detecting result and a snow covering condition on the old and new images, a pseudo change caused by the snow covering change is removed, a change area is extracted, change detecting accuracy and the automation degree for map revision are improved, and a data updating cycle is shortened.

Description

technical field [0001] The invention belongs to the field of image processing, and relates to a remote sensing image processing and change detection method, in particular to a high-resolution panchromatic remote sensing image change region extraction method based on high-resolution remote sensing images taking into account the influence of snow coverage. Background technique [0002] The Northeast region has a high latitude and is close to the source of the winter monsoon. It is one of the main snow accumulation areas in winter in my country. The large area of ​​snow accumulation has an important impact on the use of water resources, disastrous weather and atmospheric circulation in the Northeast region. When performing change detection in the Northeast region, the snow cover also has a great impact on the results of change detection. Changes in snow cover conditions lead to some spurious changes in the change detection results. How to reduce the impact of snow cover, remov...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46
Inventor 潘励谈家英杨倩
Owner WUHAN UNIV
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