Mechanical Fault Diagnosis Technology of Wind Turbine Transmission System Based on Image Features

Table 1

Statistical feature description.

Attributes	Description
(CON(Contrast))	It reflects the total amount of local gray changes in the image, and describes the strength and clarity of the image texture. Range of values [0,(size(GLCM,1)-1)^2] for monochrome images, the value is 0
(CORRE(Correlation))	By reflecting the linear correlation of the gray level in the image, the extension of one gray value in one direction can be obtained. Range of values [−1,1]
(ASM(Energy))	The texture thickness and uniformity of the gray level distribution in the image are described by the sum of the squares of all the elements in the gray level co-occurrence matrix. [0,1] range of values the larger the value, the simpler the image texture is
(IDM(Homogeneity))	Reflect a local texture transformation in the image. The range of values is [0,1]. The larger the value, the slower the texture change between different regions