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Pool fire flame height measurement method based on visible image processing

An image processing and visible light technology, applied in image data processing, image enhancement, image analysis, etc., can solve the problems of difficult measurement of flame burning height and lack of data support

Inactive Publication Date: 2015-11-25
PETROCHINA CO LTD +2
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for measuring the flame height of a pool fire based on visible light image processing, which overcomes the difficulty in measuring the flame burning height when a fire occurs in an oil storage tank, so that when evaluating the fire duration and flame heat radiation intensity, Deficiencies such as lack of strong data support

Method used

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Examples

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Embodiment Construction

[0026] Below in conjunction with the examples, the specific implementation of the present invention will be further described in detail. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] Through the camera installed on the scene, the scene picture of the flame containing the flame is collected. The color of the flame is quite different from the color of the surrounding objects. The color space of the flame picture is converted from the RGB space to the YCrCb space. This is because the RGB space is processed. The obtained flame segmentation effect is very bad, and it is easy to be interfered by general background objects, so its color space is converted into YCrCb color space. The Y component in YCrCb represents the brightness information, and Cr (red component) and Cb (blue color component) to represent the color information, the mutual conversion formula between YCrCb color space and...

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Abstract

The invention relates to the technical field of fire hazard degree evaluation, and especially relates to a pool fire flame height measurement method based on visible image processing. The method comprises the steps: collecting a flame on-site image through a CCD white-light lens; converting a color space of the flame on-site image into a YCrCb space from an RGB space, wherein the constraint conditions for flame pixel judgment are as follows: Y(x, y) > Ymean; Cr(x, y) > Crmean; Cb(x, y) < Cbmean; Y(x, y) > Cb(x, y); and Cr(x, y) > Cb (x, y). According to the invention, the method can achieve the monitoring of the flame height through collecting a visible image, achieves the comprehensive real-time on-line monitoring of the flame height, improves the monitoring accuracy, effectiveness and timeliness, brings convenience to a worker for accurately understanding the height information of the flame of an oil tank, and finally provides reliable and accurate data for the estimation of the disaster-bearing capability of the oil tank.

Description

technical field [0001] The invention relates to the technical field of assessing the degree of fire, in particular to a method for measuring the height of pool fire flames based on visible light image processing. Background technique [0002] At present, the well-known oil tank pool fire temperature measurement uses a hand-held infrared instrument. As for the flame height of the pool fire, there is basically no good way to solve it. When a real pool fire occurs, everyone is busy fighting the fire, and seldom considers the issue of measuring the height of the flame. This will undoubtedly lead to a situation where there is no actual textual research on the cause of the pool fire and the accumulated design experience. With the development of my country's petroleum industry and the implementation of the National Crude Oil Strategic Reserve Project, more and more large-scale oil reserves have been built one after another. The safe production of large reserve oil depots is facing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G01B11/02
CPCG01B11/026G06T2207/10024G06T2207/30232
Inventor 张宝良樊海燕李双林刘晓东赵重石程喜梅
Owner PETROCHINA CO LTD
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