Change Detection Method of Remote Sensing Image

A remote sensing image and change detection technology, applied in the field of image processing, can solve the problems of inability to obtain different ground object change detection images, inability to classify remote sensing images, and ignoring change results, so as to reduce missed detection information and false detection information, and reduce fog. The effect of haze, the effect of comprehensive change detection information

Active Publication Date: 2017-02-01
XIDIAN UNIV
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Problems solved by technology

Although this method can solve the problem of low detection accuracy and narrow application range of a single type of difference map, it still has the disadvantage that the method operates on pixels, thus ignoring the change results for a specific object, and only obtains Two types of results, changed and unchanged, cannot classify remote sensing images, and cannot obtain change detection images of different ground objects

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  • Change Detection Method of Remote Sensing Image
  • Change Detection Method of Remote Sensing Image
  • Change Detection Method of Remote Sensing Image

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0045] combined with figure 1 , the steps of the present invention are as follows.

[0046] Step 1, input the remote sensing images before and after the change.

[0047] Input two remote sensing images before and after the change in the same area and acquired at different times.

[0048] Step 2, judge whether the input remote sensing image is a color remote sensing image, if so, execute step 3, otherwise, use the input remote sensing image as the remote sensing image after defogging, and execute step 6.

[0049] Step 3, construct the dark channel image.

[0050] (3a) Select a certain pixel of the color remote sensing image, from the three color channels of red R, green G, and blue B, select the color channel with the smallest brightness value, and use the brightness value of the color channel as the pixel point grayscale value.

[0051] (3b) Repeat step ...

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Abstract

The invention discloses a remote sensing image change detection method. The detection method comprises the implementation steps that (1) remote sensing images before and after changes are input; (2) whether the input images are color images or not is judged; (3) a dark primary color channel image is constructed; (4) whether fog exists on the color remote sensing images or not is judged; (5) the color remote sensing images with the fog are defogged; (6) the images are segmented; (7) classification and recognition are performed; (8) change detection is performed. According to the remote sensing image change detection method, the remote sensing images affected by fog and haze can be well processed, and meanwhile different types of ground object change detection images can be respectively obtained. The method has a wide application range and high detection accuracy and can be applied to the technical fields of ground object change monitoring before and after earthquakes and dynamic monitoring of crop growth states.

Description

technical field [0001] The invention belongs to the technical field of image processing, and further relates to a remote sensing image change detection method in the technical field of image segmentation and image classification and recognition. This method can quickly detect the change information of two-temporal remote sensing images, and can be applied to the monitoring of changes in ground features before and after earthquakes, and the dynamic monitoring of crop growth status. Background technique [0002] Change detection is to detect the change information of the ground objects in the area over time by analyzing multiple remote sensing images in the same area at different times. With the development of remote sensing technology and information technology, multi-temporal remote sensing image change detection has become an important direction of current remote sensing image analysis research. [0003] In the research of multi-temporal remote sensing image change detecti...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00
Inventor 王韵彤韩冰张丽霞柳畅胡艳艳宋亚婷王平仇文亮
Owner XIDIAN UNIV
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