Water meter recognition method based on dynamic image processing

A dynamic image and recognition method technology, applied in image data processing, image enhancement, image analysis, etc., can solve the problems that the quality of photos is easily disturbed by the environment, the dial data cannot be recognized, and the error value is increased.

Active Publication Date: 2017-09-29
INST OF METROLOGY OF HEBEI PROVINCE
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Problems solved by technology

However, this solution also has shortcomings: First, the quality of the captured photos is easily disturbed by the environment, such as the brightness of the light will affect the reading effect of the photos, and the water droplets in the dial may even cause the photos taken to be unusable for computer recognition. The second is that only static dials can be photographed, and the verification method is limited to the start-stop method, which is not easy to improve the verification efficiency; the third is that the recognition accuracy is low, sometimes individual pointer circles in the dial are blocked, and the computer cannot recognize the data on the dial at all , the versatility is not high
In this method, first reco

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  • Water meter recognition method based on dynamic image processing
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  • Water meter recognition method based on dynamic image processing

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[0081] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings, but this is not a limitation of the present invention. The scope of protection of the present invention is subject to the contents recorded in the claims. protection scope of the present invention.

[0082] The overall technical concept of the present embodiment is as shown in the figure, wherein the water meter dial has five jumping characters, four red pointers and a plum blossom pointer, and the jumping dial is composed of five black characters. The reading of the water meter is generally calculated in tons, but the five black characters in the verification process of the water meter generally have no practical guiding significance. The minute needle (×0.01), the thousand minute needle (×0.001), and the ten thousand minute needle (×0.0001). The pointer of ×0.0001 rotates once, and the pointer of ×0.001 rotates one grid; the pointer of ×0.001 rotate...

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Abstract

The invention belongs to verification of a water meter, and particularly relates to a water meter recognition method based on dynamic image processing. The method comprises the steps of installing a camera, acquiring a picture, preprocessing, graying and binarizing, positioning a pointer and calculating an angle, acquiring water consumption and the like. The method solves the problem that the recognition result is inaccurate in the prior art, and has the advantages that data has relatively high accuracy and the like in the water meter verification process.

Description

technical field [0001] The invention belongs to the verification of water meters, in particular to a water meter identification method based on dynamic image processing. Background technique [0002] The water meter is a measuring instrument under the national key management. It is widely used in the measurement of water for urban residents and industrial production. It is a measuring instrument for trade settlement. Obviously, the accuracy of water meter measurement is very important, and water meter verification is a necessary means to ensure the accuracy of water meter measurement. . The verification of pointer water meters is based on the "JJG162-2009 Verification Regulations for Cold Water Meters" promulgated by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on April 30, 2009. There are three main categories, namely, appearance and function inspection, sealing inspection, and indication error verification....

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Application Information

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IPC IPC(8): G06K9/32G06T7/12G06T7/136
CPCG06T7/12G06T7/136G06T2207/10024G06V10/25
Inventor 王艳霞许广文胡文昭宋兴芳郭朝阳武凤栖郭增军
Owner INST OF METROLOGY OF HEBEI PROVINCE
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