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Method and device for rapid detection of ecological environment change patches based on time series images
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A detection method and plaque technology, applied in image analysis, image enhancement, image data processing, etc., can solve the problem of inability to meet the needs of ecological protection red line to detect human activities in time, low efficiency of extraction of suspected plaques of human activities, and stability of results and poor reliability, to achieve the effect of preserving plaque integrity, fast speed, and accurate extraction
Active Publication Date: 2021-11-26
MINISTRY OF ECOLOGY & ENVIRONMENT CENT FOR SATELLITE APPL ON ECOLOGY ENVIRONMENT
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[0004] At present, based on the detection of ecological environment changes and the identification of human activity patches of ecological damage based on remote sensing images, computer and image processing software are used to visually interpret and extract human activities in the way of human-computer interaction. The human activity map extracted by this method Spots depend on the rich experience of interpreters, the stability and reliability of the extraction results are poor and time-consuming, and the extraction efficiency of suspected human activity plaques is low, which cannot meet the needs of ecological protection red lines to detect human activities in time
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Embodiment 1
[0071] The embodiment of the present invention provides a method for rapid detection of ecological environment change patches based on time-series images, which is used to automatically acquire new human activity change patches in (eco-regions such as ocean red lines), such as figure 1 As shown, the method includes:
[0072] S1: Obtain the remote sensing image containing the area to be detected, the remote sensing image includes the current remote sensing image and at least one historical remote sensing image.
[0073] The types of remote sensing images include but are not limited to hyperspectral remote sensing images, multispectral remote sensing images, high spatial resolution remote sensing images, low spatial resolution remote sensing images or radar images, etc. Remote sensing images must be current and Historical images of at least two scenes.
[0074] S2: Preprocessing the remote sensing images to obtain the preprocessed current and historical images.
[0075] Prepro...
Embodiment 2
[0116] The embodiment of the present invention provides a device for rapid detection of ecological environment change plaques based on time-series images, such as figure 2 As shown, the device includes:
[0117] The image acquisition module 1 is used to acquire remote sensing images including the area to be detected, and the remote sensing images include current remote sensing images and at least one historical remote sensing image.
[0118] The types of remote sensing images include but are not limited to hyperspectral remote sensing images, multispectral remote sensing images, high spatial resolution remote sensing images, low spatial resolution remote sensing images or radar images, etc. Remote sensing images must be current and Historical images of at least two scenes.
[0119] The preprocessing module 2 is used to preprocess the remote sensing images and obtain the preprocessed current and historical images.
[0120] Preprocessing includes image radiometric calibration...
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Abstract
The invention discloses a method and device for quickly detecting ecological environment change plaques based on time-series images, belonging to the field of environmental monitoring. This method firstly preprocesses the acquired image, and then uses spectrum, geometry, texture and other features to segment the current image to obtain the patch distribution of the current image; segment the historical image according to the acquired patch vector boundary of the current image, Obtain the plaques of historical images; compare the changes of the current images with the corresponding plaques of historical images, and mark the plaques as unchanged or changed plaques according to the degree of change; make statistics on all the changed plaques, and obtain the changes of the plaques. Location, quantity, distribution and the area, maximum value, minimum value, mean value and other characteristics of the changing plaques. This method does not rely on prior knowledge and manual interpretation, and can automatically and quickly identify the changing areas of the image, providing support for the detection of ecological environment changes in coastal zones and the supervision of ecological damage.
Description
technical field [0001] The invention relates to the field of environmental monitoring, in particular to a method and device for rapid detection of ecological environment change plaques based on time-series images. Background technique [0002] With the continuous strengthening of the country's ecological civilization construction, the timely detection of changes in the ecological environment, especially ecological damage, has become one of the most important tasks in the field of ecological environment protection. Ecological environment change detection is the foundation and premise of ecological environment supervision. In order to discover the changes in the ecological environment in time and obtain the spatial location and area of the ecological damage behavior, it is an important part to carry out the detection of the changes in the ecological environment. [0003] The traditional detection of changes in the ecological environment and the discovery of ecological damag...
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