Method for identifying and detecting fire flame in big space

A flame and fire technology, applied in the field of fire flame identification and detection in large spaces

Inactive Publication Date: 2009-08-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned invention has certain limitations in judging whether a fire has occurred only by the shape analysis dete

Method used

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  • Method for identifying and detecting fire flame in big space
  • Method for identifying and detecting fire flame in big space
  • Method for identifying and detecting fire flame in big space

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Experimental program
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Embodiment Construction

[0016] The picture captured by the camera is converted into an analog signal and transmitted to the CCTV controller in the control room through optical fiber. On the CCTV controller, the analog signal is converted into a digital signal, part of which is sent to the computer monitor screen located in each monitoring room, the other part is sent to the digital monitoring host, and part of it is encoded (usually MPEG encoding) for storage. to the hard disk recorder.

[0017] Such as figure 1 As shown, the present invention includes processes such as preprocessing, motion detection, color detection, time-domain feature analysis, connected region search, shape analysis, and area change analysis.

[0018] Each part is described in detail below:

[0019] 1. Pretreatment

[0020] Due to the physical limitations of the camera's CCD photosensitive device during the shooting process, it is inevitable that noise will be introduced during the sampling process, which will affect the fina...

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Abstract

The invention discloses a method for identifying and detecting the fire flame in a big space, including: pretreating the input video streams, performing movement detection for the video streams to obtain the movement pixel, performing color detection for the video streams to obtain the pixel with the flame characteristic color, performing frequency domain analysis for all the pixels according with the movement detection and the color detection flame characteristic, searching the communicating areas formed by mutually connecting the pixels according with the same characteristic, calculating the circumferences and the areas of the obtained communicating areas to perform the shape analysis, performing the area change variable analysis for each communicating area, at last judging whether the fire happens. In the method, the real flame in the big space is distinguished from the flashy car light, so that the device is not only for the flame detection in the tunnel, but also used in the big-space fire flame detecting sites such as a gymnasium, a museum, a warehouse and the like.

Description

technical field [0001] The invention relates to a method suitable for fire flame recognition and detection in large spaces, which can distinguish real flames from flickering car lights in large spaces, and is suitable for fire monitoring places in large spaces, such as tunnels, warehouses, gymnasiums, and museums and other public places. Background technique [0002] Chinese invention patent application 200810121371.X discloses a method for identifying and detecting fire flames in tunnels, including preprocessing the input video stream to remove light; performing motion detection on the video stream to obtain motion pixels; and performing color detection on the video stream , to obtain pixels with the characteristic color of the flame; search for a connected region composed of all pixels that meet the same characteristics and are connected to each other; calculate the perimeter and area of ​​the resulting connected region, and perform shape analysis; for each connected regio...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06T7/00
Inventor 谢迪廖胜辉童若峰
Owner ZHEJIANG UNIV
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