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Combustion gas index automatic identification method based on images

An automatic recognition and image technology, applied in the field of image recognition, can solve the problem that the recognition method relies on third-party tools, etc., and achieve the effect of accurate extraction and improved robustness

Inactive Publication Date: 2016-11-30
CHONGQING UNIV
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Problems solved by technology

The paper "Research on Character Recognition Method of Gas Meter Dial Based on HALCON" realizes the gas index recognition process on the ORC system of HALCON software. Although the gas meter index can be accurately extracted, the recognition method relies too much on third-party tools

Method used

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  • Combustion gas index automatic identification method based on images
  • Combustion gas index automatic identification method based on images
  • Combustion gas index automatic identification method based on images

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Embodiment Construction

[0033] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] figure 1It is a system overview diagram of the present invention, and the image-based gas index automatic recognition method provided by the present invention includes the following steps: S1: the user starts the smart phone client, and takes a real-time image of the gas meter through the smart phone camera; S2: the smart phone client The captured gas meter image is recognized, and the gas index is detected. After the detection is successful, it is automatically displayed, and the user is asked whether the identification is correct. If the user confirms, the gas index data and the gas meter image are uploaded to the background server of the gas company; S3: The data administrator of the gas company checks the report and corrects abnormal data through the server; if the user fails to upload the data on time, a reminder message is sent...

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Abstract

The invention relates to a combustion gas index automatic identification method based on images and belongs to the technical field of image identification. The method is characterized in that a conventional scheme in a dial positioning and character identification process is improved, the robustness of combustion gas meter image noise is improved, and a more accurate character sub-image which does not contain other impurities can be obtained; in addition, the structure information of images are utilized to describe characteristics of different character images, a classifier is constructed by a 3-neighbour method, the information separability of 10 extracted character characteristics from 0-9 is good, and the combustion gas index can be accurately extracted without a complex identification process, so that the method is much better than an existing combustion gas index identification method in efficiency, and the whole process from image collection to successful characteristic identification is no longer than 0.08s, and the combustion gas index can be integrated to a combustion gas index identification system having real-time requirements; and the method does not depend on any third party software and can be transplanted to any platform in demand such as a PC platform or an intelligent mobile phone client.

Description

technical field [0001] The invention belongs to the technical field of image recognition and relates to an image-based automatic gas index recognition method. Background technique [0002] At present, in the existing technical solutions related to the method of extracting gas meter readings, most of them are designed based on the method flow of positioning, segmentation, feature extraction and recognition. Firstly, the morphological filtering method is used to preprocess the image, and the rough positioning of the gas meter image is realized through the horizontal and vertical grayscale projection method, and the rough positioning dial is re-positioned by using the method of combining edge detection and morphological processing. Vertical projection method to segment character sub-images. The difference between these methods is reflected in the extraction and recognition of features. Among them, the paper "Research on Digital Image Recognition of Gas Meter Readings" uses the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/34
CPCG06V30/153
Inventor 陈恒鑫高明琦赵兴
Owner CHONGQING UNIV
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