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Port area ship target change detecting method based on remote sensing images

A remote sensing image and change detection technology, which is applied in the directions of instruments, scene recognition, calculation, etc., can solve the problems of inaccurate registration and high false alarm rate, and achieve the effect of improving registration accuracy, speeding up operation speed and increasing the degree of manual participation

Inactive Publication Date: 2017-06-06
北京理工雷科电子信息技术有限公司
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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a remote sensing image port area ship target change detection method based on pattern recognition and image processing technology, which can solve the problem of inaccurate registration and false alarm rate of current port area ship target change detection methods. Advanced problems, achieving higher accuracy of change detection

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  • Port area ship target change detecting method based on remote sensing images
  • Port area ship target change detecting method based on remote sensing images
  • Port area ship target change detecting method based on remote sensing images

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[0042] S1: For a specific port that needs to be concerned about its changes, the historical remote sensing image of the port must first be obtained, and the distributed image primitives and images of the port area based on the same remote sensing image are prepared offline by manually labeling or intercepting the remote sensing image. Mask image; the distributed image primitives are many non-adjacent artificially intercepted image blocks, and must contain at least 30% of the land area, including the distribution information of the feature images around the port, and the distribution information containing these The image primitive can ensure the uniqueness of image registration; the mask image refers to the image of the port area that covers the land area and exposes the sea area obtained by manual smearing.

[0043] S2: The method for registering different temporal phase maps of the port area includes the following steps:

[0044] S21: For two remote sensing images of differe...

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Abstract

The invention discloses a port area ship target change detecting method based on remote sensing images and belongs to the field of target detection. The method comprises steps of: firstly obtaining two remote sensing images of the same port at different time phases; secondly, registering the two remote sensing images of the same port area acquired at different time; then, using a template image to perform mask operation on the two images, shielding a land area to obtain a sea area, homogenizing sea area image sea colors, and filling the shielded land area with a sea area mean value; making subtraction of the two registered images, and segmenting the subtracted image; finally, extracting the image feature of a slice, removing false alarm, determining the changed ship slices in the slices so as to obtain the changed ship target positions and corresponding information of the two remote sensing images. The method can accurately and quickly eliminate the influence of the cloud and the changed sea background on a final result, reduces a false alarm rate, completely and accurately segments and detects changed ship targets, and improves a detection rate.

Description

technical field [0001] The invention belongs to the technical field of image detection, and in particular relates to a method for detecting changes of ship targets in port areas of remote sensing images. Background technique [0002] With the rapid development of aviation and aerospace technology, sensor technology, computer technology, and pattern recognition technology, space remote sensing technology has made rapid progress, providing corresponding technical support and theoretical basis for automatic target detection and recognition capabilities. The detection and analysis technology of ship target changes in the port area of ​​multi-temporal remote sensing images is one of the key technologies that urgently need to be solved in our country at this stage. my country's territorial waters are vast, and marine security is an important part of national defense. It is of great significance to carry out research on the change detection of ship targets in ports: in terms of civ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/34G06K9/62
CPCG06V20/13G06V10/267G06V10/751G06F18/2411
Inventor 刘峰安宇陈天明陈宇翔
Owner 北京理工雷科电子信息技术有限公司
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