A method for detecting and locating fire based on double-waveband image

A positioning method and dual-band technology, applied in the field of computer vision, can solve the problems of crowded and chaotic scenes, and cannot guarantee the normal operation of detection equipment, and achieve the effect of reducing the amount of calculation

Inactive Publication Date: 2015-03-11
TIANJIN ISECURE TECH
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Problems solved by technology

Under the harsh working environment and natural environment (stray light interference, crowded and chaotic

Method used

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  • A method for detecting and locating fire based on double-waveband image
  • A method for detecting and locating fire based on double-waveband image
  • A method for detecting and locating fire based on double-waveband image

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Embodiment Construction

[0030] The various details involved in the technical solution of the present invention will be described below in conjunction with specific examples. It should be noted that the described examples are only intended to facilitate the understanding of the present invention, and do not limit the protection scope of the present invention.

[0031] Such as figure 1 As shown, the specific implementation of this example is divided into four parts: background modeling, suspected area detection, suspected area analysis and fire location.

[0032] 1) The process of background modeling is to add and average the stored background and the current image according to the preset weight to obtain a new background image. The definition formula for updating the weighted average is:

[0033] CurBack=(weight1*HisBack+weight2*CurImage) / (weight1+weight2)

[0034] Among them, CurBack is the updated background value, HisBack is the current background value, CurImage is the correspond...

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Abstract

A method for detecting and locating fire based on double-waveband image includes: performing background modeling using a way of weighted average, and greatly reducing an amount of calculation while ensuring real time updating of a scene; performing a flame suspected region detection based on a method of frame difference, to possibly detect more flame suspected regions; excluding unqualified suspected regions according to sensory features, airspace variability feature, time domain continuity feature, position derivable feature and distribution isolation feature of the flame, to reduce phenomenon of false reports; using a method of margin marking to map the flame region detected on an infrared image to a color image for the convenience of the monitoring staff to observe; and obtaining horizontal and vertical distances of an actual ignition point with respect to a certain reference object on the ground according to a coordinate of the flame in the image to achieve an aim of locating a fire. The advantages of the present invention are: being capable of in time and accurately determining the flame feature of the monitored occasion, providing a fire alarm, transmitting a most visual video image and targeting the fire scene.

Description

technical field [0001] The invention relates to the field of computer vision, in particular to a rapid fire detection and positioning method applied to an image-type fire detector. Background technique [0002] Due to the characteristics of its architectural structure, tall and large space buildings have certain difficulties in fire detection. Due to the distance between the detector and the sideways flow of the air, the traditional fire detection equipment cannot detect the fire and provide an alarm at the first time, but only when the fire spreads greatly and the temperature around the detector reaches the alarm threshold Only then can an alarm be provided. Therefore, the purpose of effectively controlling the fire at the initial stage of the fire and reducing the loss to a minimum cannot be achieved. With the continuous development of society, high-rise buildings are constantly emerging. Once a fire occurs, the consequences will be unimaginable. Therefore, the improveme...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06K9/00
CPCG06V20/20
Inventor 张德馨
Owner TIANJIN ISECURE TECH
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