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. 2026 Jan 27;16:4429. doi: 10.1038/s41598-025-34520-3

Table 2.

Performance across WIDER-FACE difficulty subsets.

Method Subset PSNR (dB) SSIM ArcFace Sim Detection AP@0.5
CodeFormer Easy 28.14 0.823 0.742 0.681
Medium 26.07 0.781 0.703 0.587
Hard 24.73 0.742 0.671 0.524
DiffBIR Easy 29.73 0.851 0.768 0.709
Medium 27.51 0.809 0.729 0.612
Hard 26.18 0.768 0.694 0.547
OSDFace Easy 28.92 0.836 0.751 0.695
Medium 26.83 0.794 0.716 0.598
Hard 25.41 0.751 0.683 0.538
FADiff (Proposed) Easy 31.47 0.892 0.821 0.758
Medium 29.12 0.856 0.782 0.684
Hard 27.84 0.821 0.743 0.612