An Improved Metric Learning Approach for Degraded Face Recognition

Figure 5

Degraded face recognition process. In training process, we obtained the matrix 𝐴_𝐷 for degraded face and the matrix 𝐴_𝑁 for clear face image. In test process, matrices 𝐴_𝐷 and 𝐴_𝑁 transformed the degraded test face and clear test face to the coupled metric space, calculating the distance.