Because the Local wave T-F spectrum can be showed in the gray image, so we use the moment invariants of time-frequency image as the fault features.

由于局域波时频谱可以表示为灰度图像。因此，利用图像信息的不变矩进行故障特征提取。

youdao

Because the Local wave T-F spectrum can be showed in the gray image, so we use the moment invariants of time-frequency image as the fault features.

由于局域波时频谱可以表示为灰度图像。因此，利用图像信息的不变矩进行故障特征提取。

youdao