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A smoke detection method

A detection method and smoke technology, which are used in measurement devices, image data processing, material analysis by optical means, etc., can solve problems such as inaccurate judgment results, and achieve the effects of reducing property losses, convenient use and high stability.

Active Publication Date: 2016-08-24
SHANGHAI AWARE INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of method is subject to the influence of video sampling frame rate and smoke motion speed, and the judgment results obtained are usually inaccurate

Method used

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  • A smoke detection method
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Embodiment Construction

[0049] based on the following Figure 1 to Figure 9 , specifically explain the preferred embodiment of the present invention.

[0050] The image size used in the embodiment is 352×288 pixels in size.

[0051] Smoke is generally produced with hot gas, and the hot gas moves upward due to its low density, forming an updraft, which makes the smoke float upward with the updraft. Therefore, viewed from the time axis, the overall movement trend of the smoke is upward, and at the same time, the smoke has the characteristics of spreading outward when it moves. If a suitable method is found to describe the motion characteristics of the smoke, the smoke can be distinguished from other moving objects.

[0052] Based on the above basic idea, the present invention provides a smoke detection method, comprising the following steps:

[0053] Step 1, motion detection, find the moving target in the video, and generate a foreground image (Motion MapImage, abbreviated as MMI).

[0054] The for...

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Abstract

The invention relates to a smoke detection method which comprises the steps of firstly, carrying out motion detection to find out a moving object in a video and generate an MMI; then, accumulating the MMI of all frames to generate an MAI; finding out a continuous upward movement area in the MAI to form an SMI; accumulating the SMI of all the frames to obtain an SMAI; and finally, finding out the area larger than the threshold value in the SMAI to confirm the smoke appearing area. The smoke detection method is used for smoke detection of the video monitoring environment, and is capable of realizing fire alarm, so that the property loss is reduced; according to the smoke detection method, the application scope is wide, the stability is high and the use is convenient.

Description

technical field [0001] The invention relates to a smoke detection method, in particular to a smoke detection method based on a Mask mask image accumulation map. Background technique [0002] Most of the existing smoke detection methods analyze the motion direction of the smoke through two frames of images before and after, and then combine the results of multi-frame judgments to obtain the motion trend of the smoke over a period of time. Such methods are subject to the influence of video sampling frame rate and smoke motion speed, and the judgment results obtained are usually inaccurate. Contents of the invention [0003] The invention provides a smoke detection method, which is used for smoke detection in a video surveillance environment, realizes fire warning, reduces property loss, has wider application range, higher stability and more convenient use. [0004] In order to achieve the above object, the present invention provides a smoke detection method, which comprises...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/00G06T7/20
Inventor 吴正芳范柘
Owner SHANGHAI AWARE INFORMATION TECH
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