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Registration method of infrared and visible light images of electrical equipment based on surf operator

An electrical equipment, infrared image technology, applied in the field of image processing, can solve problems such as large amount of calculation and take a long time, achieve high-precision registration and improve the effect of accuracy

Active Publication Date: 2019-05-21
HOHAI UNIV CHANGZHOU +1
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  • Claims
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AI Technical Summary

Problems solved by technology

Among them, image registration based on mutual information has the characteristics of strong robustness and high precision, and has been widely used, but its calculation amount is relatively large, which leads to a long time for the registration process.

Method used

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  • Registration method of infrared and visible light images of electrical equipment based on surf operator
  • Registration method of infrared and visible light images of electrical equipment based on surf operator
  • Registration method of infrared and visible light images of electrical equipment based on surf operator

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Embodiment Construction

[0019] The implementation schematic diagram of the present invention is as figure 1 As shown, the registration method of infrared and visible light images of electrical equipment based on SURF operator of the present invention, the specific steps include:

[0020] 1) Obtain the infrared image and the visible light image of the electrical equipment in the same scene, and the infrared image and the visible light image have the same size;

[0021] 2) Perform grayscale processing on infrared images and visible light images of electrical equipment, and use a multi-directional, different weight-based morphological edge detection method to extract the edges of the grayscale images respectively. The specific steps include:

[0022] 21) Use the following filter to denoise the image, and the filter formula is as follows:

[0023]

[0024] 22) Determine the edge detection operator E k as follows:

[0025]

[0026] Among them, f represents the image containing noise, S k Represe...

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Abstract

The invention discloses a registration method of infrared and visible light images of electrical equipment based on a SURF operator. A morphological edge detection method based on multi-directions and different weights is used to obtain edge images of infrared and visible light images of electrical equipment respectively. , respectively extract the feature points of the edge image through the SURF operator, and then according to the prior knowledge of the slope direction consistency between the last correct matching point pair, a new matching strategy is proposed to find the correct matching point pair, finding The parameters of the affine transformation model are obtained, and finally the spatial coordinate transformation of the image to be registered is carried out by the method of bilinear interpolation to obtain the final registration image. The method adopted in the invention can realize rapid and high-precision matching of images, and can be widely used in the fields of electrical equipment health state detection and fault diagnosis.

Description

technical field [0001] The invention belongs to the technical field of image processing, and relates to a method for registering infrared and visible light images of electrical equipment. Background technique [0002] With the development of society, in order to meet the large demand for electricity from all walks of life, it is necessary to ensure the stability and safety of power grid power supply. The power equipment is an important part of the power grid system, and the safe and stable operation of the power equipment can ensure the reliable power supply of the power grid. However, because the power equipment is in the running state for a long time and is very susceptible to environmental changes, it often causes various failures. The general manifestations are abnormal heating of the whole or part of the equipment, such as the deterioration of the insulation performance of the equipment or insulation failure. Heating caused by increased dielectric loss, local overheati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/00G06T7/155G06K9/46G06K9/62G06T3/40
CPCG06T3/0075G06T3/40G06T2207/20036G06T2207/10048G06T2207/30108G06V10/44G06F18/22
Inventor 李庆武许金鑫马云鹏刘艳霍冠英周妍
Owner HOHAI UNIV CHANGZHOU
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