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Power equipment infrared image enhancement method based on NSCT domain

An infrared image and power equipment technology, applied in the field of infrared imaging, can solve the problems of poor sensor hardware manufacturing process and poor infrared imaging effect, and achieve the effect of improving infrared imaging effect, clear details and enhancing contrast.

Pending Publication Date: 2021-11-02
国网吉林省电力有限公司延边供电公司
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Problems solved by technology

[0021] Aiming at problems such as poor sensor hardware manufacturing process and infrared images being affected by visible light and ultraviolet rays, resulting in poor infrared imaging effects, this invention proposes a method for enhancing infrared images of power equipment based on NSCT domain

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  • Power equipment infrared image enhancement method based on NSCT domain
  • Power equipment infrared image enhancement method based on NSCT domain
  • Power equipment infrared image enhancement method based on NSCT domain

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Embodiment Construction

[0064] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0065] Such as figure 1 As shown, a NSCT domain-based infrared image enhancement method for power equipment includes:

[0066] S1, using NSCT transformation to transform the original infrared image in multiple scales and directions, and decompose it into high-frequency components and low-frequency components;

[0067] NSCT is composed of a non-subsampled Laplacian pyramid decomposition and a non-subsampled directional filter. First, the non-subsampled Laplacian pyramid...

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Abstract

The invention discloses a power equipment infrared image enhancement method based on an NSCT domain, and the method comprises the steps: S1, carrying out the multi-scale and multi-direction transformation of an original infrared image through NSCT, and decomposing the original infrared image into a high-frequency component and a low-frequency component; S2, segmenting a low-frequency component obtained after NSCT into a foreground and a background of the power equipment main body by adopting a grey wolf maximum entropy threshold segmentation algorithm; S3, performing linear enhancement on the foreground obtained by segmentation, performing histogram equalization on the segmented background, and finally fusing into an enhanced low-frequency component image; S4, removing irrelevant noise from the high-frequency component obtained after NSCT by adopting a VT denoizing algorithm; S5, after irrelevant noise is removed, obtaining an enhanced high-frequency component image by adopting an improvement rate genus degree fuzzy enhancement algorithm; and S6, fusing the enhanced high and low components to obtain an enhanced infrared image. The imaging effect of the infrared image of the power equipment can be improved.

Description

technical field [0001] The invention relates to the technical field of infrared imaging, in particular to an NSCT domain-based infrared image enhancement method for power equipment. Background technique [0002] The stability and reliability of electrical equipment is the basic guarantee for the safe operation of the power system. According to statistics, about 90% of the substation operation accidents caused by electrical equipment failures account for about 90% of the total, and most of the failures will show abnormal temperature in the early stage. Voltage effects, current effects, and electromagnetic effects can all cause heating of electrical equipment. Infrared technology uses photoelectric conversion materials to display the invisible infrared rays emitted by the measured object in the form of temperature distribution, which is convenient, real-time, non-contact, and non-destructive, and can obtain its temperature distribution map without stopping the equipment , is ...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/00G06T7/11G06T7/136G06N3/00
CPCG06T7/0004G06T7/11G06T7/136G06N3/006G06T2207/10048G06T2207/20021G06T5/92G06T5/70
Inventor 张昕姚强石伊可谢震伟张晓华杨威
Owner 国网吉林省电力有限公司延边供电公司
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