Active infrared video based fire smoke detection method in zero-illumination environment

A technology of active infrared and identification methods, which is applied to fire alarms, character and pattern recognition, computer parts and other directions that rely on radiation.

Inactive Publication Date: 2011-09-28
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0005] At present, under the dark condition of zero illumination in the monitoring environment, there is no detection technology that uses active infrared cameras for infrared video collection and is equipped with corresponding fire video smoke recognition algorit

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  • Active infrared video based fire smoke detection method in zero-illumination environment
  • Active infrared video based fire smoke detection method in zero-illumination environment
  • Active infrared video based fire smoke detection method in zero-illumination environment

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Embodiment Construction

[0060] figure 1 A schematic diagram of the zero-illumination environmental fire and smoke detection system based on active infrared video of the present invention is given: the infrared video image data of the monitored limited zero-illuminance space C collected by the active infrared camera D is transmitted through the image capture card E or the hard disk video recorder F To the video surveillance computer A, the video surveillance computer A analyzes the infrared video image by using the image analysis software written according to the present invention based on the flow chart of the zero-illumination environmental fire smoke recognition algorithm for active infrared video. Command and control the alarm device B to issue an alarm signal; if the calculation result of the cluster center speed feature is less than the threshold, it is judged as non-fire smoke, return to the first step of the process, re-enter the next cycle, and start reading the next infrared Video image data. ...

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Abstract

The invention discloses an active infrared video based fire smoke detection method in zero-illumination environment. The method comprises the steps of: acquiring active infrared video image data; extracting foreground images from the infrared video image data by a difference method and carrying out intensity value analysis; extracting and analyzing the speed characteristics of clustering centers in the foreground images; calculating an average value and a variance of the speed characteristics of the clustering centers, and comparing a preset threshold value with the calculated variance of the speed characteristics of the clustering centers to judge whether fire-disaster smoke exists in the monitored and limited zero-illumination space or not; if so, giving alarming signals; and if not, returning to the former step to acquire infrared video image data of next frame continuously. In the method, the influence of the background noise of infrared video images is reduced and the active infrared video smoke detection is realized in the zero-illumination environment.

Description

Technical field [0001] The invention belongs to the technical field of fire detection, and specifically relates to computer image processing and active infrared video fire detection in a zero-illumination environment, and in particular to a zero-illumination environment fire smoke identification method based on active infrared video. Background technique [0002] Visual fire detection technology is a new fire detection technology based on machine vision and image processing. It can effectively integrate image features such as flames and smoke to provide intuitive fire information. Visual fire detection technology has the characteristics of fast response speed, wide monitoring range, long distance, etc., so that fire detection technology meets people's requirements for fire safety to a greater extent. Among them, the smoke image recognition detection technology can detect fire earlier and achieve early Fire detection. [0003] At the 13th European Conference on Signal Processing, B...

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Application Information

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IPC IPC(8): G08B17/12G06K9/00
Inventor 张永明刘耘畅方俊王进军
Owner UNIV OF SCI & TECH OF CHINA
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