Image recognition method for state of pressure gauge of fire extinguisher

An image recognition and pressure gauge technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problem of inability to automatically identify pressure gauges, and achieve the effect of high recognition accuracy
CN105809151AActive Publication Date: 2016-07-27CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
Publication Date
2016-07-27

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Abstract

The invention provides an image recognition method for the state of a pressure gauge of a fire extinguisher.The method comprises the following steps that a digital image of the pressure gauge of the fire extinguisher is collected and preprocessed; the dial plate area of the pressure gauge is extracted from the preprocessed digital image through a Hough transform mode and preset dial plate color characteristics of the pressure gauge; the dial plate area of the pressure gauge is searched for the current position of a pointer through the HIS color characteristics; the colors of the left side and the right side of the pointer are detected according to the current position of the pointer and preset color judgment conditions to judge the current state of the pressure gauge.Automatic recognition of the state of the pressure gauge is completed, the influence of certain environment factors and self conditions is eliminated, and the recognition accuracy is high.
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Description

technical field

[0001] The invention relates to the technical field of digital image processing, in particular to an image recognition method for the state of a pressure gauge of a fire extinguisher. Background technique

[0002] The fire extinguisher pressure gauge is an instrument that reflects its internal filling state. In many departments and industries, especially in dangerous goods storage areas, it is necessary to monitor the state of fire extinguishers in real time to ensure normal filling to avoid accidents. In the case of many fire extinguishers, it is rather boring to manually read and record the state of the pressure gauges one by one, and the repetitive work is easy to make people tired and make mistakes. Therefore, the present invention provides a computer identification method.

[0003] Fire extinguisher pressure gauges mostly use pointers and circular dial structures. At present, the automatic identification methods for pointer instruments based on digital i...

Claims

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