Method of positioning instrument to be recognized for electric inspection robot

A power inspection and positioning method technology, applied in the field of image processing, can solve the problems of large image jitter, result uncertainty, time consumption, etc., and achieve strong anti-interference ability, strong robustness, and reduce alignment errors Effect

Active Publication Date: 2017-08-25
CHONGQING UNIV OF POSTS & TELECOMM +1
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Problems solved by technology

This consumes a lot of time, and the weighting leads to uncertainty in the results. When the surface of the instrument is damaged, the shadow of the light appears, or the captured image shakes greatly, this method has great defects.
[0009] From the above analysis, it can be seen that obtaining dial information is a key step in the existing methods of automatic reading of pointer instruments, but now most of them adopt general methods, and there are still many unsolved problems in practical problems.

Method used

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  • Method of positioning instrument to be recognized for electric inspection robot
  • Method of positioning instrument to be recognized for electric inspection robot
  • Method of positioning instrument to be recognized for electric inspection robot

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Embodiment Construction

[0040] The technical solutions in the embodiments of the present invention will be described clearly and in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0041] The technical scheme that the present invention solves the problems of the technologies described above is:

[0042] refer to figure 1 Described is a kind of positioning method of the to-be-recognized instrument of a power inspection robot, comprising the following steps: (1) calculating the number of pictures to be taken in the middle and the corresponding shooting focal length according to the error of the pictures with the shortest focal length and the farthest focal length; (2) obtaining the location of the corresponding focal length Figure (3) Align and calculate the transformation matrix (4) Obtain dial information (5) Binarization process (6) Obtain pointer information and rea...

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Abstract

The invention claims the protection of a method of positioning an instrument to be recognized for an electric inspection robot, and relates to the technical field of image processing application. The method includes the steps of taking pictures using preset parking of a robot at an instrument to be recognized; setting the number of pictures required to be taken at each position under a set focal length; positioning the position of the instrument accurately through a transform matrix and extracting information of a dial plate; then binarizing the region; and finding out the position of a pointer and the reading. The method has the characteristics of high reading accuracy of the position of the dial plate, low pre-processing requirement of the pictures, and strong robustness for illumination, shadows and other interference.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method for locating an unidentified instrument of a power inspection robot. Background technique [0002] In the power system, the pointer instrument has a wide range of applications. In substations, real-time monitoring of instrument readings is required to prevent accidents caused by some parameters exceeding the standard. The current inspection method is mainly manual inspection. The efficiency of manual inspection readings is low, the error is large, and the risk is high. Therefore, it is necessary to invent a method for obtaining images by inspection robots and using efficient image processing technology to obtain meter readings, so as to improve efficiency and ensure the safe operation of the power system. [0003] The substation inspection robot is based on a mobile platform with autonomous navigation and precise positioning, and integrates sensors such as vi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20G06K9/32
CPCG06V10/22G06V20/62G06V2201/02
Inventor 米建勋杨清云邓欣何艾莲马向彬
Owner CHONGQING UNIV OF POSTS & TELECOMM
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