Remote sensing image change detection method and device, apparatus and storage medium
A technology of change detection and remote sensing images, applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problems of low degree of automation and low precision, and achieve the effect of high degree of automation, strong applicability and high accuracy
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Embodiment 1
[0041] like figure 1 , The present embodiment proposes an application of remote sensing image change detection method comprising:
[0042] Step 101: the original two images of different timings separately image processing, the image generating surface reflectance images of the X and the Y reflection surface;
[0043] In step 101, the original image containing the image quality control information, the satellite geometry, the sensor geometry information, acquisition time metadata.
[0044] like figure 2 , The step comprising:
[0045] Step 201: metadata in the original image comprising the first timing to the original timing of the first image atmospheric correction, first generating an initial surface reflectance image; metadata with the second timing of the second original image comprising timing atmospherically corrected original image, generating a second initial surface reflectance image;
[0046] In step 201, the correction errors can be reduced through the atmosphere introdu...
example
[0091] Select two Landsat8 Beijing image area, each time, as shown September 4, 2014 September 2, 2019, in FIG. 3 (a) and 3 (b) is. Each issue of quality control image files include metadata QA satellite images and the sensor information. 6s of Landsat8 by atmospheric correction data, and data masking atmospheric correction, registration, resampling, and other cutting process, the two views acquired resolution of 30 meters, a size of 5000 * 5000, the number of bands X 7 surface reflectance image and Y.
[0092] Each cell traversing spectral difference value is calculated, the difference image may be constructed D1 spectral characteristic differences for two spectral images characterized as Figure 4 , The larger the image, the greater the degree of change. Using a typical correlation of the two image analysis algorithm are combined, and a linear transformation, effectively reduce the error caused by illumination, sensor parameters, and other color images, and can enhance the maximu...
Embodiment 2
[0094] Based on the above embodiments, the present application provides a remote sensing image change detection means, see Figure 9 As shown in the present application Change Detection device 300 according to an embodiment comprises at least:
[0095] Surface reflectance image generating unit 301, the original image for two different timings, respectively, image processing is performed, to generate the reflectivity image of the first image surface and a second reflecting surface;
[0096] Spectral difference image generation unit 302, a first surface and a second surface reflectance image reflectance spectral imaging characteristic analysis, generates a difference image spectrum;
[0097] Changes the difference image generation unit 303, a reflectance of the first surface and the second surface reflectance image for image linear conversion image to generate difference images change;
[0098] Image generating unit 304 changes, based on the spectral difference images and converting ...
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