Instrument template establishment method, terminal device and computer storage medium
A technology for establishing methods and instruments, applied in computer parts, calculations, instruments, etc., can solve problems such as inability to be universal, and achieve the effect of improving recognition accuracy and recognition efficiency
Active Publication Date: 2022-08-09
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology
Some methods are to identify directly through image processing, remove the interference factors step by step, and then find the pointer, but these methods are often only for instrument recognition of a single scene, and cannot be universal
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[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.
[0030] In order to solve the above problems, the present application proposes a method for establishing an instrument template. For details, please refer to figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the method for establishing an instrument template provided by the present application. The method for establishing a meter template of the present application is applied to a terminal device, which may be a terminal device su...
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The present application provides a method for establishing an instrument template, a terminal device and a computer storage medium. The method for establishing an instrument template includes: acquiring a first template image and identifying scale points on the first template image; generating a fitting graph based on the scale points; correcting the first template image based on the fitting graph and the preset graph to obtain the second template image; perform polar coordinate transformation on the second template image based on the fitted graph, and obtain the polar coordinate graph and the polar coordinate values corresponding to the scale point information; save the polar coordinate graph and the correspondence between the scale points and the polar coordinate values as the meter Template: Identify the image of the instrument to be tested based on the instrument template to obtain the scale value indicated in the image of the instrument to be tested. The meter template establishment method of the present application can improve the recognition accuracy and recognition efficiency of meter degrees.
Description
technical field [0001] The present application relates to the technical field of digital image processing, and in particular, to a method for establishing an instrument template, a terminal device, and a computer storage medium. Background technique [0002] As a traditional measuring instrument, the pointer meter is still widely used in electric power, transportation, scientific experiments due to its simple structure, low price, convenient maintenance, anti-corrosion, no magnetic field interference, low temperature resistance, and high reliability. and residents' life. [0003] Pointer meters require regular meter reading or accuracy appraisal. The identification technology of pointer instruments has developed to this day, and now the instrument can be detected by means of machine vision combined with image processing. The most important thing for all processing methods and methods is to find the position of the pointer on the instrument. Only the position of the pointer ...
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IPC IPC(8): G06V20/20G06V10/24
CPCG06V20/20G06V10/242G06V2201/02
Inventor 李宁钏熊剑平
Owner ZHEJIANG DAHUA TECH CO LTD