Fig. 4
From: A novel dual-student reverse knowledge distillation method for magnetic tile defect detection

Visualizations of features before and after wavelet decomposition. (A) The magnetic tile image. (B) The high-level semantic feature \(F_{T}^{3}\) through the teacher network. (C) The low-frequency component of the \(F_{T}^{3}\) through wavelet transform. (D) The high-frequency component of the \(F_{T}^{3}\) through wavelet transform.