HFSA: Heterogeneous Teacher-Student Networks With Frequency-Spatial Fusion and Axial Feature Learning for Industrial Anomaly Detection. - Yue Chen; Guoheng Huang; Xianglian Liao; Xiaochen Yuan; Bingo Wing-Kuen Ling; An Zeng; Chi-Man Pun; Yan Li 122 (IEEE Trans. Consumer Electron., 2025)