Non-contact detection method of insulator pollution degree based on hyperspectral technology
A detection method and insulator technology, applied in the direction of optical testing flaws/defects, etc., can solve the problems of manpower, material and manual interference, easy to cause errors, and inability to carry out on-site live detection.
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Embodiment 1
[0039] Please refer to figure 1 , this embodiment discloses a non-contact detection method for insulator pollution degree based on hyperspectral technology, including the following steps:
[0040] S1. Obtain the hyperspectral image set of the polluted insulator, and correct and transform the hyperspectral image set, and divide the processed hyperspectral image set into two parts, namely the first hyperspectral image set and the second hyperspectral image set image collection;
[0041] S2. Obtain the salt-ash ratio I and the total amount of pollution I of the polluted insulator area corresponding to the first hyperspectral image set;
[0042] S3. Extracting texture features and hyperspectral spectral lines of the first hyperspectral image set, wherein the corresponding label of the texture feature of the first hyperspectral image set is salt-gray ratio I, and the corresponding label of the hyperspectral spectral line of the first hyperspectral image set is The total amount of...
Embodiment 2
[0053] For step S1 in Embodiment 1, it is to select a hyperspectral image set to be acquired in the same pollution type area of the polluted insulator.
[0054] In this embodiment, the area of the same pollution type refers to the assumption that the soluble components and proportions of the same pollution amount on the surface of the insulator in this area are the same.
Embodiment 3
[0056] For step S1 in Example 1, the method for obtaining the hyperspectral image set of polluted insulators is as follows: after the UAV carries a hyperspectral instrument to fly to the line tower and hovers, use the hyperspectral instrument to acquire the hyperspectral image set of polluted insulators.
[0057] In this embodiment, the hyperspectral image set of polluted insulators is usually obtained on sunny days after fog. Therefore, at this time, the dirt on the insulators will precipitate salt crystals after being wet, making the distribution of pollution on the surface of the insulators more obvious.
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