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A Method of Combining Infrared and Multispectral Bands to Monitor Forest Fires

A forest fire and multi-spectral technology, applied in the field of monitoring forest fires, can solve problems such as misjudgment, inability to identify the location of the ignition point, and lack of spectral information, so as to reduce misjudgments and facilitate leaders to analyze and identify the development of fire.

Active Publication Date: 2016-09-07
CHINA CENT FOR RESOURCES SATELLITE DATA & APPL
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Problems solved by technology

However, infrared images are black and white, without spectral information, which is prone to misjudgment of fire
[0004] The multi-spectral image of Environment-1B can identify the spreading fire and the smoke caused by the fire, and can also extract the affected area of ​​the forest fire that has been extinguished and calculate the fire area, but due to the influence of smoke, it cannot be used in the multi-spectral image The location of the ignition point is clearly identified on the

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  • A Method of Combining Infrared and Multispectral Bands to Monitor Forest Fires
  • A Method of Combining Infrared and Multispectral Bands to Monitor Forest Fires
  • A Method of Combining Infrared and Multispectral Bands to Monitor Forest Fires

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the present invention is described in detail, as figure 1 As shown, the steps are as follows:

[0024] (1) Select the CCD data and infrared IRS data collected by Environment-1 Satellite B (HJ-1B) on the same day. Among them, the third band of the CCD camera is the red light band, the fourth band is the near-red band, the third band of the IRS camera is the mid-infrared band, and the fourth band is the thermal infrared band. According to the characteristics of the fire, the third and fourth bands of the CCD camera and the third band of the IRS camera are selected as the original data.

[0025] (2) Carry out radiance calculation to the infrared camera data collected in step (1), preliminarily judge whether there is fire point in the image, if exist then go to step (3), otherwise return to step (1) and carry out data collection again;

[0026] When a fire occurs, the temperature of the flame can even reach about 1000K, and ...

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Abstract

A method for combining infrared and multispectral bands to monitor forest fires: (1) select the CCD camera data and infrared camera data collected by environmental satellites on the same day, select the third band (red band) and the fourth band (near light band) of the CCD camera. (red band), the third band (infrared band) of the infrared camera; (2) calculate the radiance of the collected infrared camera data, and initially judge whether there is a fire point, if there is, go to step (3), otherwise return to step (1) Re-collect the data; (3) adjust the third band data of the infrared camera to make it consistent with the CCD camera in terms of frame and spatial resolution; (4) adjust the CCD camera data and infrared camera data in step (3) The data is geometrically finely corrected; (5) the third waveband of the geometrically finely corrected CCD is used as the new first waveband, the fourth waveband is used as the new second waveband, and the third waveband of the infrared camera is used as the new third waveband. The resulting new imagery monitors forest fires.

Description

technical field [0001] The invention relates to a method for monitoring forest fires. Background technique [0002] Forest fire is a major disaster that occurs worldwide every year and endangers forest resources. Every forest fire brings serious harm and loss to forest vegetation, forest ecosystem, global ecological environment and human life and property, and the destructive impact on ecosystem may last for tens to hundreds of years. [0003] The infrared multi-spectral camera of Environment-1B star has a spectral range of 3.50 μm to 3.90 μm, which is sensitive to the identification of high-temperature targets such as fires and active volcanoes. Especially for forest fires, it can not only clearly display the fire point and fire line The shape, size, and location of the fire, and it also has a strong ability to identify small hidden fires and residual fires. However, infrared images are black and white and have no spectral information, which is prone to misjudgment of fir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B17/12G01J5/60
Inventor 龚亚丽郭朝辉李杏朝傅俏燕潘志强
Owner CHINA CENT FOR RESOURCES SATELLITE DATA & APPL
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