Substation multi-dial multi-pointer identification method based on template matching

A template matching and recognition method technology, applied in the field of image processing, can solve the problems of low precision, high cost, and relatively few researches on multi-dial and multi-pointer recognition, and achieve the effect of improving accuracy

Pending Publication Date: 2022-08-05
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Existing researches on pointer meter recognition mostly focus on single-dial single-hander recognition, multi-dial single-hander recognition, and single-dial multi-hander recognition

Method used

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  • Substation multi-dial multi-pointer identification method based on template matching
  • Substation multi-dial multi-pointer identification method based on template matching
  • Substation multi-dial multi-pointer identification method based on template matching

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Embodiment Construction

[0056] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.

[0057] Embodiments of the present invention provide a method for identifying multiple dials and multiple pointers in substations based on template matching, refer to figure 1 shown, including the following steps:

[0058] S1. Acquire a dial image in the substation to be read, and establish a rectangular coordinate system in the dial image according to a preset rule; perform median filtering on the dial image;

[0059] S2, ...

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Abstract

The invention discloses a transformer substation multi-dial multi-pointer identification method based on template matching, and the method comprises the steps: obtaining a dial image in a to-be-read transformer substation, and building a rectangular coordinate system in the dial image according to a preset rule; performing median filtering on the dial image; performing template matching on the dial plate image after the median filtering, and dividing each dial plate area in the dial plate image according to a template matching result; respectively extracting regions of interest in each dial region; pointers in all the regions of interest are extracted through an HSV color model, and an extracted image is obtained; detecting straight lines in each extracted image through Hough transform, and obtaining coordinates of pointers in each region of interest; according to the coordinates of the pointers, the readings of the pointers in all the dial plate areas are recognized. According to the method, the reading of the multi-dial multi-pointer instrument in the transformer substation can be automatically identified, and the pointer identification accuracy of the multi-dial multi-pointer instrument is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method for identifying multiple dials and multiple pointers in a substation based on template matching. Background technique [0002] Computer vision can be widely used in the security industry, image and video processing on web pages, game interaction, quality inspection of modern factories and products, etc. Common methods of collecting device information include information collection based on IoT sensors and information collection based on computer vision. Because the latter has the advantages of not having to enter the device, easy installation and low cost, computer vision-based information collection is recognized by the industry. Pointer meter recognition is a classic application of computer vision in the industrial field. [0003] Existing researches on the identification of pointer instruments mostly focus on single-dial single-pointer identification, multi...

Claims

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Application Information

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IPC IPC(8): G06V10/22G06V10/25G06V10/34G06V10/36G06V10/44G06V10/56G06V10/75
CPCG06V10/22G06V10/25G06V10/34G06V10/36G06V10/44G06V10/56G06V10/751G06V2201/02Y04S10/50
Inventor 张传雷石进远石蕾李建荣可婷张勇进
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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