Remote sensing image identification method and device of sky lantern

Abstract

The invention relates to the field of petroleum chemical production and monitoring, and especially relates to a remote sensing image identification method and device of a sky lantern. According to the characteristics that the reflectivity of a sky lantern point to a short-wave infrared band is abnormally high and the reflectivity to a near-infrared band is not obviously abnormal, the mutual relation between the near-infrared band and the short-wave infrared band is utilized to construct a normalized combustion index; a threshold is set for the analysis of the normalized combustion index, so that background values are removed, and the sky lantern point is highlighted; and then the short-wave infrared band is utilized to set a threshold, the background values are further removed, and the extraction of sky lantern point is realized for a target area. Compared with an existing visual interpretation method, the method overcomes the defects of limitation and low visual interpretation efficiency caused by human factors, and sky lantern point extraction is efficiently and accurately realized.

Description

technical field [0001] The invention relates to the field of petrochemical production monitoring, in particular to a remote sensing image recognition method and device for sky lanterns. Background technique [0002] The sky lantern is a safety facility in petrochemical production. Its function is to guide the tail gas emitted during production and the combustible gas emitted in an accident state to high altitude for combustion and then discharged. Due to the relatively cheap treatment cost, this method is adopted by countries all over the world. Widely used in petrochemical enterprises. However, the burning of sky lanterns may bring about a wide range of environmental problems, such as air pollution, greenhouse gas release, heat stress, acid rain and other environmental problems. attention. However, due to the obstruction of obtaining real data, there is not enough direct experimental data to explain that sky lanterns affect the environment. The development of remote sens...

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Problems solved by technology

[0003] Fire monitoring sensors are mainly limited to sensors with mid-infrared bands. The spatial resolution of this type of satellite data is low, and the effect is better for dark nights with less solar and thermal interference. Studies have shown that Landsat products can be used to monitor high-temperature events , but there are relatively few studies on this kind of research. In a small amount of research, it is mainly through the method of visual interpretation. This method has great limitations due to human factors, and its application efficiency is low.

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