Method for automatically reading and identifying pointer dial data based on computer visual identification

A computer vision, automatic reading technology, applied in computer parts, calculation, character and pattern recognition, etc., can solve the problems of easy introduction of errors, affecting the verification accuracy, and long time-consuming manual verification process, to reduce labor intensity and widely The effect of application space, improving verification efficiency and verification accuracy

Pending Publication Date: 2022-05-03
FOSHAN NANHAI GUANGDONG TECH UNIV CNC EQUIP COOP INNOVATION INST +1
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AI Technical Summary

Problems solved by technology

Because the pointer meter has special requirements for reading, the manual verification process takes a long time, and it is easy to introduce errors and affect the verification accuracy.

Method used

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  • Method for automatically reading and identifying pointer dial data based on computer visual identification

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] combined reference figure 1 The flow chart of the method for automatically reading and recognizing pointer dial data based on computer vision recognition in the present invention, the method for automatically reading and recognizing pointer dial data based on computer vision recognition of the present invention includes the following steps:

[0023] S1. Write a data set DS, which contains the coordinates of each dial scale and the actual physical value ...

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Abstract

The invention provides a method for automatically reading and identifying pointer dial data based on computer vision identification, which comprises the following steps of: S1, writing a data set DS, and putting coordinates of each dial scale and an actual physical value corresponding to the scale; s2, cutting the testImage, and separating the dial image from the testImage to obtain an image cropImage; s3, performing perspective transformation on the cropImage to obtain a rectangular image correctImage of which the size is the same as that of the template; s4, carrying out threshold segmentation on the correctImage to obtain a pointer position; s5, the position of the pointer corresponds to the scale position in the modelImage, data are read out from the data set DS, the problems that the manual verification process consumes long time, errors are likely to be introduced, and verification precision is affected are solved, and manual execution is changed into automatic execution; the labor intensity is reduced, and the calibration efficiency and the calibration precision of the pointer meter are improved.

Description

technical field [0001] The invention relates to the field of machine vision recognition, in particular to a method for automatic reading and recognition of pointer dial data based on computer vision recognition. Background technique [0002] The pointer meter has intuitive reading, simple structure, convenient use and high cost performance, and has been widely used in production practice. In order to ensure production quality and production safety, the instrument needs to be calibrated regularly to ensure its accuracy. Because the pointer meter has special requirements for reading, the manual verification process takes a long time, and it is easy to introduce errors and affect the verification accuracy. If the automatic identification system of pointer meter readings can be realized within the error range, the verification efficiency and verification accuracy of pointer meters in various measurement units across the country will be greatly improved. Therefore, the realizati...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V10/26G06V10/75G06K9/62
Inventor 魏登明李泽辉李炬文杨海东
Owner FOSHAN NANHAI GUANGDONG TECH UNIV CNC EQUIP COOP INNOVATION INST
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