Method and system for automatically identifying reading of pointer instrument and equipment
A meter reading and automatic recognition technology, applied in the field of image recognition, can solve the problems of inconvenient pointer meter reading and limited reading accuracy, and achieve the effect of automatic reading, high accuracy and improved recognition accuracy
Active Publication Date: 2021-08-31
WUHAN UNIV OF TECH
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Problems solved by technology
[0003] In order to solve the problem of inconvenient and limited reading accuracy of existing pointer meters, this application provides an automatic identification method, system and equipment for pointer meter readings
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[0053] Attached to the following Figure 1-2 This application will be described in further detail.
[0054] The embodiment of the present application discloses an automatic identification method for the reading of a pointer meter, refer to figure 1 , the method includes the following steps:
[0055] S1: Obtain an image of the target instrument panel, perform image preprocessing on the target instrument panel image to obtain an image to be recognized, and identify the inner contour line of the dial in the image to be recognized;
[0056] S2: According to the inner contour line of the dial, the target image is obtained after the perspective transformation of the image to be recognized;
[0057] S3: Identify the dial pixels in the target image, and obtain the color partition information of the dial;
[0058]S4: Identify the angle of the pointer on the dial in the target image, and determine the reading of the pointer on the dial according to the angle of the pointer and the co...
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The invention relates to a method and system for automatically identifying reading of pointer instrument and equipment, and the method comprises the steps: obtaining a target instrument panel image, processing the target instrument panel image, obtaining a to-be-identified image, and identifying the inner contour line of a dial plate in the to-be-identified image; according to the inner contour line of the dial plate, performing perspective transformation on the to-be-identified image to obtain a target image; identifying dial pixels in the target image to acquire dial color partition information; and identifying the pointer angle on the dial in the target image, and determining the reading of the pointer on the dial according to the pointer angle and the color partition information of the dial. According to the invention, an automatic meter reading function can be realized, and accuracy is high.
Description
technical field [0001] The present application relates to the technical field of image recognition, and in particular to a method, system and device for automatic recognition of pointer meter readings. Background technique [0002] At present, as a traditional measuring instrument, pointer meter has a large number of applications in electric power, chemical industry and other industries. Especially in the power plant, various oil cooling meters, arrester detectors, etc. are installed. However, due to the early installation and considering the stability of the equipment, pointer-type meters are often used to display the current equipment status. The transcription of the pointer meter needs to be done manually, and the reading accuracy is subject to the subjective influence of the observer, as well as external factors such as observation angle, observation distance, and lighting conditions. Therefore, the existing pointer meter is inconvenient to read, and the reading accuracy...
Claims
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IPC IPC(8): G06K9/00G06K9/32G06K9/40G06K9/46G06T7/62G06T7/66G06T7/73
CPCG06T7/62G06T7/66G06T7/73G06T2207/10004G06T2207/10024G06V20/10G06V10/242G06V10/48G06V10/30G06V2201/02
Inventor 郭钧李天成杜百岗仝少聪周圣文李益兵彭兆
Owner WUHAN UNIV OF TECH