Method of positioning instrument to be recognized for electric inspection robot

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...

AI Technical Summary

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.

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