A Fire Detection Method Based on Multi-temporal Landsat-8 OLI Image Shortwave Infrared

A short-wave infrared, detection method technology, applied in image analysis, image enhancement, image data processing and other directions, can solve problems such as false detection
CN109583300BActive Publication Date: 2021-03-26TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2021-03-26

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Abstract

The invention relates to a fire detection method based on multi-temporal Landsat-8 OLI image short-wave infrared, comprising the following steps: 1) acquiring satellite fire area image data, and preprocessing the temporal images before and after the fire; 2) after preprocessing Calculate the NBRSWIR index map from the image; 3) Perform a difference operation on the index maps of the front and back phases to obtain the NBRSWIR difference map, and judge the fire area based on the NBRSWIR difference map. Compared with the prior art, the present invention has the advantages of being accurate, fast, effective and practical.
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Description

technical field

[0001] The invention relates to the field of fire detection, in particular to a fire detection method based on multi-temporal Landsat-8 OLI image short-wave infrared. Background technique

[0002] In recent decades, scholars at home and abroad have carried out extensive research on forest fire information extraction based on remote sensing images. Initially, low-resolution satellite image data such as NOAA / AVHRR and EOS / MODIS were mostly used to monitor forest fires. Although they have a high time resolution, they can only monitor the disaster situation in a large area with a coarse spatial resolution, and the extraction of forest fire information is limited to using infrared to perform surface temperature retrieval to detect fire points and make fire monitoring Fig. 1 shows that the extraction error for burnt areas is relatively large. The start of the medium-resolution Landsat program has greatly improved the accuracy of fire extraction. Among them, the ...

Claims

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