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Pointer representation number identification method and device and electronic equipment

A recognition method and pointer table technology, applied in the field of image recognition, can solve the problems of weak scene adaptation, low recognition accuracy, and high algorithm complexity, and achieve the effects of shortened running time, high recognition accuracy, and simple algorithm

Pending Publication Date: 2020-06-23
北京眸视科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the recognition accuracy of this method is not high, the robustness of scene adaptation is not strong, the algorithm complexity is high, and it cannot be processed in real time

Method used

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  • Pointer representation number identification method and device and electronic equipment
  • Pointer representation number identification method and device and electronic equipment
  • Pointer representation number identification method and device and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The embodiment of the present invention provides a pointer representation number recognition method, see figure 1 A flow chart of a pointer representation number recognition method is shown, the pointer representation number recognition method includes the following steps:

[0036] Step S102, acquiring the pointer list image to be recognized.

[0037] The image of the pointer table to be recognized is the image of the pointer table to be read. The image of the pointer table is a color image, and the image of the pointer table needs to include two parts: the scale of the dial and the pointer. The indication position is determined by the pointer, and the indication corresponding to the indication position is read through the dial.

[0038] Step S104, extracting the color region including the pointer and the scale line in the HSV color space, and setting the result as a mask, and dividing the pointer region on the mask.

[0039] In the HSV color space of the pointer tabl...

Embodiment 2

[0050] The embodiment of the present invention provides another pointer representation number identification method, see figure 2 A flow chart of another pointer representation number recognition method is shown, the pointer representation number recognition method includes the following steps:

[0051] Step S202, acquiring the pointer list image to be recognized.

[0052] The pointer table image can be collected by the camera, and the collected pointer table image is likely to have some noise, and the pointer table image needs to be preprocessed.

[0053] Step S204, preprocessing the pointer table image.

[0054] Preprocessing includes three steps: image smoothing, color correction, and color enhancement, performed through steps A1-A4:

[0055] Step A1, performing image denoising processing on the pointer table image by means of a box-type mean filtering method.

[0056] The purpose of image smoothing is to remove the noise generated in the image and reduce the interferen...

Embodiment 3

[0110] Corresponding to the above-mentioned method embodiment, the embodiment of the present invention provides a pointer representation number identification device, such as Figure 10 A structural schematic diagram of a pointer representation number recognition device is shown, the pointer representation number recognition device includes:

[0111] Pointer table image acquisition module 1001, used to obtain the pointer table image to be identified;

[0112] Pointer and scale line area extraction module 1002, for extracting the color area that comprises pointer and scale line in HSV color space, and set result as mask, divide out pointer area on mask;

[0113] A connected component extraction module 1003, configured to extract connected components of the pointer region;

[0114] A rotation rectangle determination module 1004, configured to determine a rotation rectangle corresponding to the connected component of the pointer area;

[0115] Scale area determination module 10...

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Abstract

The invention provides a pointer representation number identification method and device, and electronic equipment. The method comprises the steps of obtaining a to-be-identified pointer table image; extracting a color region containing a pointer and scale lines in the HSV color space, setting a result as mask, and segmenting a pointer region on the mask; connected components of the pointer area are extracted; determining a rotation rectangle corresponding to the connected component of the pointer area; determining a scale line area based on the rotation rectangle and the mask; and identifyinga reading corresponding to the pointer table image based on the rotating rectangle and the scale line area. According to the method, color prior information is utilized to extract color areas of a pointer and scale lines in an HSV color space, a dial pointer area and a dial scale line area are determined, and finally readings corresponding to a pointer table image are identified through the pointer area and the scale line area. The method is high in recognition precision, strong in scene adaptation robustness and simple in algorithm, can effectively shorten the operation time of the algorithm,and can meet the requirements of real-time processing.

Description

technical field [0001] The invention relates to the technical field of image recognition, in particular to a pointer representation number recognition method, device and electronic equipment. Background technique [0002] In some traditional industries, such as: gas stations, substations, petroleum and other fields, it is necessary to use various types of instruments to monitor data at any time to ensure the normal operation of each device. Among them, pointer instruments are widely used in the above scenarios because of their simple structure, no power supply, high voltage resistance, corrosion resistance, electromagnetic interference resistance, waterproof, and freeze resistance. However, because most pointer instruments do not have an electronic communication interface, it is only required to manually read the instrument data for statistics and monitoring. However, there are many problems in the way of manual meter reading. First of all, human subjective factors can eas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/34G06K9/40G06K9/46
CPCG06V20/10G06V10/26G06V10/30G06V10/56G06V2201/02
Inventor 梁增龑
Owner 北京眸视科技有限公司
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